KR102244685B1 - Construction joints for water-resistant materials and construction joints for concrete structures using the same - Google Patents

Abstract

The present invention is to provide a concrete structure construction joint construction method using an expansion joint for a water cutoff member, which is manufactured and installed by using unhardened concrete, ready-mixed concrete (KS F 4009), includes expansion and contraction of concrete structures, blocks river water and unknown water flowing into the concrete interception conduit buried below the groundwater level on the riverside that sends wastewater (sewage) to a sewage treatment plant, and thus enables construction even when the pressure of river water and unknown water flowing into the conduit is 6.0 to 10.0 kgf/cm^2. The present invention is very effective where excessive movement and extreme distortion of the concrete structure occur.

Description

Construction joints for water-resistant materials and construction joints for concrete structures using the same}

The present invention relates to a concrete structure construction joint construction method using a new joint material for both waterstop material (called "New Fose Joint"), and in particular, manufacturing and installation using ready-mix concrete (KS F 4009), which is uncured concrete. Including the expansion and expansion of concrete structures, it blocks river water and unknown water that flows into the concrete block conduit buried below the groundwater level along the river that sends sewage (sewage) to the sewage treatment plant, and flows into the inside of the conduit and unknown. It relates to a concrete structure construction joint construction method using a water-stop material combined expansion joint that can be constructed even when the water pressure is 6.0kgf/㎠ to 10.0kgf/㎠ pressure.

In recent years, instead of constructing culvert structures such as sewage culverts, power outlets, communal ducts, passage boxes, or culvert structures that form waterways, concrete members are manufactured and transported to the site by precast method at the factory, instead of being constructed with cast-in-place concrete. After that, it is common to assemble each precast concrete member integrally to form an entire precast concrete structure.

In this way, in the case of a culvert that extends long in the longitudinal direction, in the case of a conventional precast concrete structure in this way, due to the characteristics of the concrete itself, expansion and contraction of a predetermined length occurs due to phenomena such as temperature change and drying contraction. Is higher than the strength of concrete, causing cracks in concrete structures, or cracks in construction joints where concrete structures are connected to each other.

In addition, even when differential settlement occurs in the ground on which the precast concrete structure is installed, cracks are generated in the concrete structure itself or in the connection part where the concrete structure is connected to each other.

Expansion joints can be placed in preparation for the occurrence of cracks in the joints caused by such expansion or differential settlement. The most important thing in installing these expansion joints is that the intervals of concrete structures are different due to the expansion of the concrete structure or the differential settlement of the ground. Even if it opens up, moisture should not penetrate at that interval.

Here, the conventional elastic material is largely divided into a water-expandable rubber water-stop material, a bentonite water-stop material, and a PVC index plate.

Here, the water-expandable rubber water-stop material has the advantage of being able to maintain the shape of a rubber product even during water expansion, so that it can be applied to expansion joints, and is easy to construct.

However, the above water-expandable rubber water-stop material is made of an organic material and cannot guarantee a continuous ordering effect, and it is made of an elastic body, so its precision cannot be guaranteed during construction, and its complementary performance for concrete cracks is insufficient. There is a drawback of necessity of cleaning the background surface.

In addition, the above bentonite water-stopping material is a product obtained by compression molding sodium bentonite, which has a high expandability that reaches 16 times the volume when it comes into contact with water, and a net mesh (woven fabric) attached to the slopes, and processed into a certain dimension. It is a product to prevent leakage of joints that inevitably occur in civil engineering and construction works by properly combining them.

This bentonite water-stopping material has a primary water-stop effect due to hydration expansion and a double effect of filling up cracks and voids of the structure after expansion, and has a sealing effect by filling even on irregular irregularities, and a permanent effect is possible. It has the advantage of not being affected by temperature, such as constructability and cold and hot weather.

However, once the bentonite water-stop material is expanded, it is impossible to maintain the shape of the product, so it must be rebuilt.In the rainy season, a remedial measure is required to delay the premature hydration expansion, and cannot be applied to the expansion joint. It is applicable, and there is a disadvantage that it is difficult to use in a place with water pressure.

On the other hand, with the development of the synthetic resin industry, PVC resins are made of soft vinyl chloride as the main raw material and have various cross-sectional shapes by extrusion molding to prevent leakage by installing them on the joints or expansion joints of concrete structures.

Here, the above-mentioned PVC index material is excellent in the robustness of the product, but as an interlocking material for concrete structures rather than an index material, there is no water expansion, cannot guarantee the water efficiency, the construction is complicated, and the labor cost is relatively high, When the secondary concrete is poured, the shape is easily deformed or damaged, the adhesive strength with the concrete is low, and the treatment of the expansion joint is difficult.

Therefore, it is possible to prevent the occurrence of cracks due to the new construction of the concrete structure or the differential subsidence of the ground, and at the same time, it is possible to prevent the occurrence of leakage due to the occurrence of gaps between the concrete structures due to the new construction or differential subsidence of the ground. It is desired to develop a water-stop material that has excellent resistance to transverse loads.

Unexamined Patent Publication (10-204-0080972)

Accordingly, the present invention was conceived to solve the above problems, manufactured and installed using ready-mix concrete (KS F 4009), which is uncured concrete, and includes expansion and expansion of concrete structures, and sewage treatment plant It blocks river water and unknown water that flows into the concrete drainage conduit buried below the groundwater level along the river that sends sewage (sewage) to the conduit, and the pressure of river water and unknown water flowing into the conduit is 6.0kgf/㎠ to 10.0kgf/㎠ The purpose of this is to provide a concrete structure construction joint construction method using a water-stop material and expansion joint that enables construction even when a degree of pressure is applied.

In order to achieve the above object, 100 parts by weight of rubber, which is one of natural rubber or synthetic rubber, includes a water-stop material combined expansion joint according to the present invention; 1 part by weight of stearic acid; Magnesium oxide (2.5 parts by weight of Magnesium Oxide; 2.5 parts by weight of Zinc Oxide; 1 to 1.3 parts by weight of Sulfur; 5 parts by weight of Petroleum Resin; Kumaron inden resin (Kumaron) Resin) 2 parts by weight; Polybutene 10 parts by weight; Poly Isobutylene 3 parts by weight; Process Oil 5 parts by weight; Calcium Carbonate 15 parts by weight; Diatomaceous Earth) 5 parts by weight; Sodium Carboxymethyl Cellulose 17.5 parts by weight; Sodium Polyacrylate 17.5 parts by weight; Sodium Bentonite 1 to 1.3 parts by weight.

In addition, the concrete structure construction joint construction method using a water-stop material combined expansion joint according to the present invention to achieve the above object is the step of forming a cutting groove by cutting a predetermined position of the concrete structure using a cutting machine (S 1 ); Forming a perforated hole by perforating at both ends of the cutting groove at a predetermined depth and width (S 2 ); Inserting a backup agent into the bottom of the cutting groove (S 3); Inserting an anchor bolt into the perforated hole (S 4); Applying an adhesive to the cutting groove and the perforation hole (S 5); Step of installing the expansion joint for both the waterstop material of claim 1 in the upper portion of the backup agent and the cutting groove (S6); Filling a concrete reinforcement agent around the water-stop material combined expansion joint (S 7); Installing a support rubber plate over the concrete reinforcement agent and the anchor bolt and the expansion joint for both water and water protection (S 8); Installing a support iron plate having a predetermined shape on the support rubber plate in the same line with the ground (S 9); Fixing the anchor bolt inserted into the perforated hole through the support plate with a nut on the support rubber plate (S 10); It characterized in that it consists of the step of installing a backup agent between the support steel plate, and filling a sealant on the backup agent.

As described above, the concrete structure construction joint construction method using a water-stop material combined expansion joint according to the present invention has the following effects.

First, the present invention is a water-stop product made of special modified rubber as a main material, and exhibits a double-acting water-stopping effect with superior water-stop performance and simple construction than conventional water-stop plates, and the index by sealing action between expansion and contraction or construction joints by the elasticity of rubber. It can have an effect, can control the maximum movement of the concrete structure, and is a 10% waterproof member.

Second, the present invention is very effective where excessive movement and extreme distortion of the concrete structure occur.

Third, the present invention has an activity range of 60% compression, 30% tensile, and 120% shear stress, and is a member that can physically control a movement that exceeds the original design (theoretical expansion and contraction amount of the concrete structure).

Fourth, the present invention maintains a sealing pressure of up to 6.0kgf/cm2 to 10.0kgf/cm2 by contacting water flowing into the expansion joint of a concrete structure and expands it by 2 to 10 times, thereby maintaining the empty voids and waterways of the expansion joint. It can be completely sealed to exhibit perfect water-stop performance.

1 is a plan view 1 showing an installation state of a water-stop material combined expansion joint according to the present invention,
FIG. 2 is a detailed view showing an enlarged portion "A" of FIG. 1;
Figure 3 is a cross-sectional view showing the installation state of the water-stop material combined expansion joint according to the present invention 1,
Figures 4a to 4f is a process diagram 1, the construction state of the water-stop material combined expansion joint according to the present invention,
Figure 5 is a plan view 2 showing the installation state of the water-stop material combined expansion joint according to the present invention,
6 is a detailed view showing an enlarged portion "A" of FIG. 5;
Figure 7 is a cross-sectional view 2 showing the installation state of the water-stop material combined expansion joint according to the present invention,
Figures 8a to 8f is a process diagram 2, the construction state of the water-stop material combined expansion joint according to the present invention,
Figure 9 is a plan view 3 showing the installation state of the water-stop material combined expansion joint according to the present invention,
10 is a detailed view showing an enlarged portion "A" of FIG. 9;
Figure 11 is a cross-sectional view 3 showing the installation state of the water-stop material combined expansion joint according to the present invention,
Figure 12a to Figure 12f is a process diagram 3, the construction state of the water-stop material combined expansion joint according to the present invention,
Figure 13 is a plan view 4 showing the installation state of the water-stop material combined expansion joint according to the present invention,
14 is a detailed view showing an enlarged portion "A" of FIG. 13;
Figure 15 is a cross-sectional view 4 showing the installation state of the water-stop material combined expansion joint according to the present invention,
Figures 16a to 16e are process diagrams 4 showing the construction state of a water-stop material combined expansion joint according to the present invention,
Figure 17 is a plan view 5 showing the installation state of the water-stop material combined expansion joint according to the present invention,
18 is a detailed view showing an enlarged portion "A" of FIG. 17;
Figure 19 is a cross-sectional view 5 showing the installation state of the water-stop material combined expansion joint according to the invention
Figures 20a to 20e is a process diagram 5.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[Example 1]

1 is a plan view 1 showing the installation state of the water-stop material combined expansion joint according to the present invention, Figure 2 is a detailed view showing an enlarged portion "A" of Figure 1, Figure 3 is a water-stop material combined expansion and contraction according to the present invention It is a cross-sectional view 1 showing the installation state of the joint material.

As shown in these figures, the water-stop material combined expansion joint according to the present invention is one of natural rubber or synthetic rubber 100 parts by weight of rubber; 1 part by weight of stearic acid; 2.5 parts by weight of magnesium oxide; 2.5 parts by weight of zinc oxide; 1 to 1.3 parts by weight of sulfur; 5 parts by weight of Petroleum Resin; 2 parts by weight of Kumaron Resin; 10 parts by weight of polybutene; 3 parts by weight of polyisobutylene; 5 parts by weight of process oil; 15 parts by weight of calcium carbonate; 5 parts by weight of Diatomaceous Earth; Sodium Carboxymethyl Cellulose 17.5 parts by weight; 17.5 parts by weight of sodium polyacrylate; It consists of 1 to 1.3 parts by weight of sodium bentonite.

That is, the elasticity index material is rubber, stearic acid, magnesium oxide, zinc oxide, sulfur, petroleum resin, coumarone indene resin, polybutene, polyisobutylene, process oil, calcium carbonate, diatomaceous earth, sodium carboxy methylcellulose , Sodium polyacrylate and sodium bentonite.

Here, since the rubber has unique properties for each type, synthesis of natural rubber, SBR rubber, IR rubber, BR rubber, EPT rubber, IIR rubber, CR rubber, NBR rubber, urethane rubber, etc. Rubber may be used alone, or natural rubber and synthetic rubber may be used in combination.

In addition, the stearic acid is white at room temperature, has a thin leaf-shaped crystal, has a melting point of about 71°C, is not soluble in water, is well soluble in organic solvents, and is a kind of saturated fatty acid that exists in a solid state at room temperature. It is preferable to add and mix 1 part by weight based on 100 parts by weight of rubber.

In addition, the magnesium oxide is also referred to as goto, and industrially, it is also referred to as magnesia.

Chemical formula MgO. Although it is a white amorphous powder, equiaxed crystals precipitate from a solution dissolved with borate.

It has a molecular weight of 40.32, a melting point of 2,800°C, a boiling point of 3,600°C, and a specific gravity of 3.2 to 3.7.

It is slightly soluble in water and is alkaline, but is easily soluble in acid and ammonia water.

It absorbs water and carbon dioxide in the air and gradually becomes magnesium hydroxycarbonate.

It is formed by heating metallic magnesium in the air or by thermally decomposing magnesium carbonate.

It is preferable to add and mix 2.5 parts by weight of the magnesium oxide based on 100 parts by weight of the rubber.

In addition, the zinc oxide is a colorless crystal ZnO that is insoluble in water. The powder is called zinc oxide, zinc white, etc.

It is a light white powder with a melting point of 1,975°C (pressurized) and 1,720°C (normal pressure), and specific gravity of 5.47 (amorphous) and 5.78 (crystalline).

It turns yellow when heated to about 300℃, but becomes its original color when cooled.

It is an amphoteric oxide that is hardly soluble in water, but soluble in dilute acids and concentrated alkalis.

Naturally, it is produced as red zinc, and industrially, it is made by heating and vaporizing metallic zinc and burning it with air or burning zinc sulfate or zinc nitrate.

It is important as a white pigment because the particles are fine and the covering power is lower than that of light white, but it is not toxic and does not turn black by hydrogen sulfide.

In addition, it is preferable to add and mix 2.5 parts by weight of the zinc oxide based on 100 parts by weight of the rubber.

In addition, the sulfur has a melting point of 120° C. and a specific gravity of 1.92.

At room temperature, it is a yellow, odorless, crisp crystal. At high temperature, it combines with almost all metals or hydrogen except gold and platinum to form sulfides.

It is preferable that the sulfur is added and mixed in an amount of 1 to 1.3 parts by weight based on 100 parts by weight of rubber.

In addition, the petroleum resin is a light yellow or dark brown thermoplastic resin having a molecular weight of 2000 or less obtained by polymerization with an acidic catalyst using higher unsaturated hydrocarbons in high-temperature pyrolysis oil such as naphtha as a raw material. There are two types: olefinic and aromatic.

In general, the aromatic series produced is a lost flake or lump-shaped solid with a softening point of 70~140℃ and a specific gravity of 1.00~1.10, and it is soluble in organic solvents excluding alcohol.

It is mixed with alkyd resin, chromaon indene resin, phenolic resin, rodin, natural rubber, and synthetic rubber.

It is preferable to add and mix 5 parts by weight of the petroleum resin based on 100 parts by weight of rubber.

In addition, the coumarone indene resin is polymerized by heat or catalyst after purifying the distillate of tar at 160 to 180°C.

Sulfuric acid is mainly used as a catalyst, and other Friedel-Crafts type catalysts, inorganic acids, organic acids, and metal halides of any kind are also used.

The color tone, transparency, hardness, softening point, and solubility are different depending on the purity of the raw material and the polymerization method.

In general, it is light brown to black, and the softening point is 50 to 160°C. It is soluble by many organic solvents, especially aromatic hydrocarbons.

It is chemically neutral and has high acid and alkali resistance.

It is preferable to add and mix 2 parts by weight of the coumarone inden resin based on 100 parts by weight of the rubber.

In addition, the polybutene is soluble in benzene, chloroform, gasoline, petroleum ether, and is not soluble in water, alcohol, or acetone.

It is a synthetic resin that is stable to heat or sunlight and has a lower viscosity than polyisobutylene.

It has excellent water resistance, moisture resistance, and gas impermeability. When mixed with vinyl acetate resin, it increases water resistance and prevents softening due to saliva mixing.

It is used alone or in combination with polyisobutylene, and polyisobutylene is used when high viscosity is required.

It is preferable to add and mix 10 parts by weight of the polybutene based on 100 parts by weight of the rubber.

In addition, the polyisobutylene is a generic term for an isobutylene ((CH)C=CH) polymer, and is also referred to as polyisobutene.

Polymerization with a cation catalyst such as trifluoroboric acid at a low temperature near -100°C can yield a high polymer having a molecular weight of 100,000 or more.

High molecular weight polyisobutylene: It has a polymerization degree of 1,000 or more and is a rubber-like solid, but it is chemically stable because it does not have unsaturated bonds in the polymer.

Here, it is preferable to add 3 parts by weight of the polyisobutylene to 100 parts by weight of the rubber.

In addition, the process oil is a kind of softener that facilitates processing of synthetic rubber, and improves physical properties to some extent.

Only oils mixed with synthetic rubber by mixing rollers, extruders, Bumbury mixers, etc. are referred to as such.

By lubricating the rubber molecules, the movement of the molecules is free, and internal friction is reduced to reduce heat generation during mixing.

In addition, it helps to disperse the filler, improves workability, improves elasticity and refraction of the vulcanized rubber, improves tensile strength and abrasion resistance, and helps to lower the price.

In the styrene-butadiene-based synthetic rubber, petroleum distillates and aromatic hydrocarbons having a high boiling point are used, and if the blending amount of carbon black is large, the amount of process oil added increases, such as rubber powder 100, carbon black 60, and aromatic process oil 20. A compatible petroleum distillate is used for the chloroprene-based synthetic rubber, and stearic acid is added to the nitrile-based synthetic rubber.

Here, it is preferable to add and mix 5 parts by weight of the process oil based on 100 parts by weight of the rubber.

And, the calcium carbonate is the formula CaCO3. Among the salts that exist in nature, it is the most common.

There are various forms, and exist as marble, calico, berth, limestone, chalk, ice tin, clam shell, egg shell, coral, etc. It is generally colorless crystals or white solid, has a specific gravity of 2.93, and decomposes at 825 ℃.

When heated, carbon dioxide is produced and quicklime is obtained.

This reaction is an important reaction for industrially obtaining carbon dioxide and quicklime.

CaCO3 → CaO+CO2↑ It does not dissolve in pure water, but dissolves in water containing carbon dioxide, producing calcium hydrogen carbonate and dissolving. CaCO3+CO2+H2O ↔ Ca(HCO3)2 In addition, carbon dioxide is generated when an acid acts on calcium carbonate.

CaCO3+2HCl → CaCl2+H2O+CO2↑ When water containing carbon dioxide meets limestone in the ground, it dissolves and creates a cavity. This is a limestone cave, and the dissolved water is decomposed by geothermal heat, and calcium carbonate precipitates.

When this precipitation occurs in a limestone cave, it produces stalactites or stalagmites.

To obtain calcium carbonate in the laboratory, alkali carbonate is applied to a water-soluble calcium salt, or carbon dioxide is passed through lime water.

Industrially, it is obtained by crushing limestone to make powder, sieving it, or peeling (an operation that divides the particles according to their size or specific gravity using the difference in speed when solid particles freely settle in the air). This is called heavy calcium carbonate.

In addition, the precipitate produced by blowing carbon dioxide into lime oil is filtered, dried, and finely pulverized.

This is called hard calcium carbonate.

Also, the wet pulverization of shells is called whiting.

Calcium carbonate is widely used in industrial fields due to its low cost and low specific gravity.

That is, as limestone and marble, it is used as a main raw material for cement, as a raw material for calcium oxide, and as various neutralizing agents for iron making and building materials.

In addition, ash is used for white pigments and water-based paints, and precipitated calcium carbonate is used for pigments, paints, toothpaste, etc., and is also compounded in rubber as a reinforcing agent.

It is preferable to add and mix 15 parts by weight of the calcium carbonate based on 100 parts by weight of the rubber.

In addition, the diatomaceous earth is mainly made of silicic acid (SiO2), and has a white or grayish white color.

It is light and soft enough to smear powder when you touch it with your fingers.

Because it is microporous, it has strong water absorption.

Here, it is preferable to add and mix 5 parts by weight of the diatomaceous earth based on 100 parts by weight of rubber.

In addition, the sodium carboxy methyl cellulose is made into alkaline cellulose by putting sulfite pulp in an aqueous sodium hydroxide solution, dissolved in sodium chloroacetate, and precipitated in methyl alcohol.

It is usually obtained as a hygroscopic white solid sodium salt, and its properties differ depending on the degree of substitution of the carboxymethyl group.

When the degree of substitution is 0.3 or higher, it is dissolved in an aqueous alkali solution and precipitated as an acid.

At a degree of substitution of 0.4 or more, it swells and dissolves in water.

The viscosity of an aqueous solution depends on the pH and degree of polymerization.

Those with a degree of substitution of 0.5 to 0.8 do not precipitate even in acidity, but precipitate from alcohol.

Various salts are made from a polymer electrolyte.

Here, it is preferable to add 17.5 parts by weight of the sodium carboxy methyl cellulose to 100 parts by weight of the rubber.

In addition, the sodium polyacrylate is used as a thickener. It is widely used as a stabilizer, a cohesive clarifying agent, an emulsifying and dispersing agent, and a tissue improving agent.

It is a white powder, odorless, and when water is added, it expands and becomes a viscous liquid through a transparent gel. It becomes a salt with a divalent or higher metal, causing crosslinking between molecules and gelation.

Here, it is preferable to add 17.5 parts by weight of the sodium polyacrylate to 100 parts by weight of the rubber.

On the other hand, the sodium bentonite is a sodium-based waterproofing material among bentonite, and good quality sodium bentonite expands about 15 to 20 times its original volume when reacting with water, and absorbs water up to 5 times its weight. It is often used as a sealant, waterproofing material, and waterproofing material.

In particular, when sodium bentonite is less than 1 part by weight compared to 100 parts by weight of rubber, volume expansion is made less, and when it is more than 1. 3 parts by weight, there is a problem of rapid expansion.

Therefore, the sodium bentonite is preferably mixed by adding 1 to 1.3 parts by weight to 100 parts by weight of rubber.

The water-stop material combined expansion joint according to the present invention consisting of the above-described configuration is a water-stop product made of special modified rubber as the main raw material. It exhibits a double-acting water-stop effect with superior water-stop performance and simple construction than conventional water-stop plates, and by the elasticity of the rubber. It is a member that can have an exponential effect due to the sealing action between the new construction or construction joints), can control the maximum movement of the concrete structure, and can waterproof 10%.

In particular, it is very effective where excessive movement and extreme warping of concrete structures occur.

In addition, the expansion joint for both water-stop materials according to the present invention has an activity range of 60% compression, 30% tension, and 120% shear stress, and can physically control movements exceeding the original design (theoretical expansion and contraction amount of concrete structures). It is an absence that can be.

In addition, the expansion joint for both waterstop material according to the present invention maintains a sealing pressure of up to 6.0kgf/cm2 to 10.0kgf/cm2 by expanding it by 2 to 10 times in contact with water flowing into the expansion or construction joint of a concrete structure. As a result, the empty voids and waterways of the expansion joint (G) can be completely sealed to exhibit perfect water-repellent performance.

Hereinafter, a description will be given of the manufacture of an elastic index material combined with an index material according to the present invention having the configuration as described above.

The method for manufacturing an elastic water-retaining material for both water-stop materials according to the present invention includes 100 parts by weight of rubber, one of natural rubber and synthetic rubber, in a ni-da mixer or a banbar re-mixer machine, which is a closed mixing/stirring machine, and stearic acid (a vulcanization aid). 1 part by weight), magnesium oxide (2.5 parts by weight), zinc oxide (2.5 parts by weight), sulfur (1.5%), mix and stir so that they are evenly mixed, and then petroleum resin (5 parts by weight) as a tackifier, and Couma Calcium carbonate as a filler after adding lone inden resin (2 parts by weight), polybutene (10 parts by weight), and polyisobutylene (3 parts by weight) and mixing and stirring so that the resin component is completely dispersed and mixed. (15 parts by weight), sodium carboxymethylcellulose (17.5 parts by weight), sodium polyacrylate (17.5 parts by weight), and sodium bentonite (1 to 1.3 parts by weight), which are water-expansion agents, are added together and stirred, while the process oil (5 parts by weight) is a softener. Part) is added and the mixture is stirred and mixed so that it is evenly dispersed. After cooling and cooling, a vulcanizing agent is added and stirred so that it is evenly dispersed again on a roller, and the mixture is homogeneously dispersed and mixed.

The unvulcanized rubber dough mixed and stirred as described above is re-stirred in an extruder while extruding to a certain standard and then semi-vulcanized at an average temperature of 160°C in a continuous vulcanizing machine that directly vulcanizes the extruded product.

Hereinafter, the construction of the concrete structure construction joint using the water-stop material combined expansion joint according to the present invention having the configuration as described above will be described.

Figures 4a to 4f is a process diagram 1 showing the construction state of the water-stop material combined expansion joint according to the present invention.

As shown in these drawings, the concrete structure construction joint construction method using a water-stop material combined expansion joint according to the present invention forms a cutting groove 12 by cutting a predetermined position of the concrete structure 10 using a cutting machine. The step (S 1); Forming a perforated hole 14 by drilling at both ends of the cutting groove 12 with a predetermined depth and width (S 2 ); Inserting a backup agent 16 at the bottom of the cutting groove 12 (S 3); Inserting the anchor bolt 18 into the perforated hole 14 (S 4); Applying the adhesive 20 to the cutting groove 12 and the perforated hole 14 (S 5); Installing an expansion joint (J) for both waterstop and contraction according to claim 1 in the upper portion of the backup agent (16) and the cutting groove (12) (S6); Filling the concrete reinforcement agent 22 around the water-stop material combined expansion joint (J) (S 7); Installing a support rubber plate 24 over the concrete reinforcing agent 22 and the anchor bolt 18 and the elastic joint (J) for both waterstop material (S 8); Installing a support iron plate 26 having a predetermined shape on the support rubber plate 24 in the same line with the ground (S 9); Fixing the anchor bolt 18 inserted into the perforated hole 14 through the support plate 26 with a nut 28 on the support rubber plate 24 (S 10); It consists of a step of installing a backup agent 16 between the support plate 26, and filling the sealant 30 on the backup agent 16.

That is, the concrete structure construction joint construction method using a water-stop material combined expansion joint according to the present invention comprises: a cutting groove 12 forming step (S 1); Hole 14 forming step (S 2); Backup agent 16 inserting step (S 3); Anchor bolt 18 insertion step (S 4); Adhesive 20 applying step (S 5); Water-stop material combined expansion joint (J) installation step (S 6); Concrete reinforcing agent 22 filling step (S 7); Support rubber plate 24 installation step (S 8); Support iron plate 26 installation step (S 9); Anchor bolt 18 fixing step (S 10); The backup agent 16 and the sealant 30 filling step (S 11) are sequentially performed to install a water-stop material combined expansion joint (J).

Here, in the step of forming the cutting groove 12 (S1), the new construction or construction joint of the target concrete structure 10 is cut using a cutting machine to form the cutting groove 12 in multiple stages for each of the lower, middle, and upper ends. .

In particular, the cutting machine is a power tool that uses electric power, and is a tool capable of cutting the surface of the concrete structure 10 expansion or construction joint in a certain shape by adjusting the cutting edge of the cutting machine.

The size of the cutting groove 12 for cutting the surface of the concrete structure 10 at a predetermined interval and depth is formed to be about 25±5% smaller than the volume of the expansion joint J installed therein.

Meanwhile, the inside of the cutting groove 12 of the concrete structure 10 cut with the cutting machine is removed by using a high pressure cleaner (150±50kg/m2) to remove foreign matter remaining on the surface of the concrete structure 10.

At this time, if water cannot be used, clean it with a brush brush, compressed air, and a vacuum aspirator.

In addition, the part of the concrete structure 10 that is soiled by oil or fat is cleaned using a solvent or a dedicated detergent.

Subsequently, in the step of forming the perforated hole 14 (S 2 ), a perforated hole 14 through which the anchor bolt 18 can be inserted is formed by drilling at both ends of the cutting groove 12 with a predetermined depth and width.

Subsequently, the insertion step (S3) of the backup agent 16 is a polyurethane foam or a member having a performance equivalent thereto, and a backup agent 16 having a specific gravity of 0.001 to 0.1 or more is added to the expansion joint (G). Insert in.

Subsequently, the anchor bolt 18 inserting step (S4) inserts the anchor bolt 18 into the perforated hole 14.

Subsequently, in the step of applying the adhesive 20 (S5), an epoxy-based wet adhesive 20 is used on the contact surface of the concrete structure 10 including the cutting groove 12 and the perforated hole 14, and the adhesive 20 ) Is a two-component material of the main and hardener, and after mixing at the correct mixing ratio (subject 2: hardener 1), it is applied to the surface of the concrete structure 10 and the expansion joint (J) for both water-stop materials.

Subsequently, the installation step (S6) of the water-stop material combined expansion joint (J) includes the upper part of the backup agent 16 and the cutting groove 12 with different sizes of the lower, middle, and upper water-stop material combined expansion joint (J). Install.;

Subsequently, in the step of filling the concrete reinforcement 22 (S7), the concrete reinforcement 22 is filled in the lower and side surfaces of the expansion joint J for both water-stop materials.

Here, the concrete reinforcement 22 is filled with a concrete reinforcement 22 composed of silicate in the deteriorated portion of the high-pressure-washed concrete structure 10.

In particular, the silicate is a generic term for a neutral salt in which hydrogen of various silicic acids is substituted with a metal atom, and is a compound containing an anion in which one or more silicon center atoms are surrounded by a negatively charged ligand.

The concrete strengthening agent 22 is used by adding 25% by weight of water to 75% by weight of silicate.

Subsequently, in the installation step (S8) of the support rubber plate 24, the support rubber plate 24 is installed over the concrete reinforcement 22, the anchor bolt 18, and the expansion joint J for both waterstop material.

Subsequently, in the step of installing the support iron plate 26 (S9), the support iron plate 26 having a predetermined shape is installed on the support rubber plate 24 in the same line with the ground.

Subsequently, in the fixing step (S10) of the anchor bolt 18, the anchor bolt 18 inserted into the perforated hole 14 through the support plate 26 is fixed with a nut 28 on the support rubber plate 24.

Subsequently, in the step of filling the backup agent 16 and the sealant 30 (S 11), a backup agent 16 is installed between the support steel plates 26, and the sealant 30 is filled on the backup agent 16. do.

The concrete structure construction joint construction method using the expansion joint for both waterstop material according to the present invention consisting of the steps as described above is a water-stop product made of special modified rubber as the main material, and has a dual-operation index effect with superior water-stop performance and simple construction than conventional water-stop plates. It can have a water-stop effect by sealing action between expansion or construction joints by the rubber elasticity of the expansion joint (J) for both water-stop material and control the maximum movement of the concrete structure (10). % Waterproof, very effective in places where excessive movement and extreme warping of the concrete structure (10) occur, and has an activity range of 60% compression, 30% tensile, and 120% shear stress, and is physically original design It is possible to control a movement that exceeds (theoretical expansion and contraction amount of the concrete structure 10), and it expands by 2 to 10 times by contacting the water flowing into the expansion or construction joint of the concrete structure 10, up to 6.0kgf/㎠ By maintaining a sealing pressure of about 10.0kgf/cm2 to completely seal empty voids and waterways of expansion or construction joints, perfect water-stop performance can be exhibited.

[Example 2]

Figure 5 is a plan view 2 showing the installation state of the water-stop material combined expansion joint according to the present invention, Figure 6 is a detailed view showing an enlarged portion "A" of Figure 5, Figure 7 is a water-stop material combined expansion and contraction according to the present invention It is a cross-sectional view 2 showing the installation state of the joint material.

As shown in these figures, the water-stop material combined expansion joint according to the present invention is one of natural rubber or synthetic rubber 100 parts by weight of rubber; 1 part by weight of stearic acid; 2.5 parts by weight of magnesium oxide; 2.5 parts by weight of zinc oxide; 1 to 1.3 parts by weight of sulfur; 5 parts by weight of Petroleum Resin; 2 parts by weight of Kumaron Resin; 10 parts by weight of polybutene; 3 parts by weight of polyisobutylene; 5 parts by weight of process oil; 15 parts by weight of calcium carbonate; 5 parts by weight of Diatomaceous Earth; Sodium Carboxymethyl Cellulose 17.5 parts by weight; 17.5 parts by weight of sodium polyacrylate; It consists of 1 to 1.3 parts by weight of sodium bentonite.

That is, the elasticity index material is rubber, stearic acid, magnesium oxide, zinc oxide, sulfur, petroleum resin, coumarone indene resin, polybutene, polyisobutylene, process oil, calcium carbonate, diatomaceous earth, sodium carboxy methylcellulose , Sodium polyacrylate and sodium bentonite.

Here, since the rubber has unique properties for each type, synthesis of natural rubber, SBR rubber, IR rubber, BR rubber, EPT rubber, IIR rubber, CR rubber, NBR rubber, urethane rubber, etc. Rubber may be used alone, or natural rubber and synthetic rubber may be used in combination.

In addition, the stearic acid is white at room temperature, has a thin leaf-shaped crystal, has a melting point of about 71°C, is not soluble in water, is well soluble in organic solvents, and is a kind of saturated fatty acid that exists in a solid state at room temperature. It is preferable to add and mix 1 part by weight based on 100 parts by weight of rubber.

In addition, the magnesium oxide is also referred to as goto, and industrially, it is also referred to as magnesia.

Chemical formula MgO. Although it is a white amorphous powder, equiaxed crystals precipitate from a solution dissolved with borate.

It has a molecular weight of 40.32, a melting point of 2,800°C, a boiling point of 3,600°C, and a specific gravity of 3.2 to 3.7.

It is slightly soluble in water and is alkaline, but is easily soluble in acid and ammonia water.

It absorbs water and carbon dioxide in the air and gradually becomes magnesium hydroxycarbonate.

It is formed by heating metallic magnesium in the air or by thermally decomposing magnesium carbonate.

It is preferable to add and mix 2.5 parts by weight of the magnesium oxide based on 100 parts by weight of the rubber.

In addition, the zinc oxide is a colorless crystal ZnO that is insoluble in water. The powder is called zinc oxide, zinc white, etc.

It is a light white powder with a melting point of 1,975°C (pressurized) and 1,720°C (normal pressure), and specific gravity of 5.47 (amorphous) and 5.78 (crystalline).

It turns yellow when heated to about 300℃, but becomes its original color when cooled.

It is an amphoteric oxide that is hardly soluble in water, but soluble in dilute acids and concentrated alkalis.

Naturally, it is produced as red zinc, and industrially, it is made by heating and vaporizing metallic zinc and burning it with air or burning zinc sulfate or zinc nitrate.

It is important as a white pigment because the particles are fine and the covering power is lower than that of light white, but it is not toxic and does not turn black by hydrogen sulfide.

In addition, it is preferable to add and mix 2.5 parts by weight of the zinc oxide based on 100 parts by weight of the rubber.

In addition, the sulfur has a melting point of 120° C. and a specific gravity of 1.92.

At room temperature, it is a yellow, odorless, crisp crystal. At high temperature, it combines with almost all metals or hydrogen except gold and platinum to form sulfides.

It is preferable that the sulfur is added and mixed in an amount of 1 to 1.3 parts by weight based on 100 parts by weight of rubber.

In addition, the petroleum resin is a light yellow or dark brown thermoplastic resin having a molecular weight of 2000 or less obtained by polymerization with an acidic catalyst using higher unsaturated hydrocarbons in high-temperature pyrolysis oil such as naphtha as a raw material. There are two types: olefinic and aromatic.

In general, the aromatic series produced is a lost flake or lump-shaped solid with a softening point of 70~140℃ and a specific gravity of 1.00~1.10, and it is soluble in organic solvents excluding alcohol.

It is mixed with alkyd resin, chromaon indene resin, phenolic resin, rodin, natural rubber, and synthetic rubber.

It is preferable to add and mix 5 parts by weight of the petroleum resin based on 100 parts by weight of rubber.

In addition, the coumarone indene resin is polymerized by heat or catalyst after purifying the distillate of tar at 160 to 180°C.

Sulfuric acid is mainly used as a catalyst, and other Friedel-Crafts type catalysts, inorganic acids, organic acids, and metal halides of any kind are also used.

The color tone, transparency, hardness, softening point, and solubility are different depending on the purity of the raw material and the polymerization method.

In general, it is light brown to black, and the softening point is 50 to 160°C. It is soluble by many organic solvents, especially aromatic hydrocarbons.

It is chemically neutral and has high acid and alkali resistance.

It is preferable to add and mix 2 parts by weight of the coumarone inden resin based on 100 parts by weight of the rubber.

In addition, the polybutene is soluble in benzene, chloroform, gasoline, petroleum ether, and is not soluble in water, alcohol, or acetone.

It is a synthetic resin that is stable to heat or sunlight and has a lower viscosity than polyisobutylene.

It has excellent water resistance, moisture resistance, and gas impermeability. When mixed with vinyl acetate resin, it increases water resistance and prevents softening due to saliva mixing.

It is used alone or in combination with polyisobutylene, and polyisobutylene is used when high viscosity is required.

It is preferable to add and mix 10 parts by weight of the polybutene based on 100 parts by weight of the rubber.

In addition, the polyisobutylene is a generic term for an isobutylene ((CH)C=CH) polymer, and is also referred to as polyisobutene.

Polymerization with a cation catalyst such as trifluoroboric acid at a low temperature near -100°C can yield a high polymer having a molecular weight of 100,000 or more.

High molecular weight polyisobutylene: It has a polymerization degree of 1,000 or more and is a rubber-like solid, but it is chemically stable because it does not have unsaturated bonds in the polymer.

Here, it is preferable to add 3 parts by weight of the polyisobutylene to 100 parts by weight of the rubber.

In addition, the process oil is a kind of softener that facilitates processing of synthetic rubber, and improves physical properties to some extent.

Only oils mixed with synthetic rubber by mixing rollers, extruders, Bumbury mixers, etc. are referred to as such.

By lubricating the rubber molecules, the movement of the molecules is free, and internal friction is reduced to reduce heat generation during mixing.

In addition, it helps to disperse the filler, improves workability, improves elasticity and refraction of the vulcanized rubber, improves tensile strength and abrasion resistance, and helps to lower the price.

In the styrene-butadiene-based synthetic rubber, petroleum distillates and aromatic hydrocarbons having a high boiling point are used, and if the blending amount of carbon black is large, the amount of process oil added increases, such as rubber powder 100, carbon black 60, and aromatic process oil 20. A compatible petroleum distillate is used for the chloroprene-based synthetic rubber, and stearic acid is added to the nitrile-based synthetic rubber.

Here, it is preferable to add and mix 5 parts by weight of the process oil based on 100 parts by weight of the rubber.

And, the calcium carbonate is the formula CaCO3. Among the salts that exist in nature, it is the most common.

There are various forms, and exist as marble, calico, berth, limestone, chalk, ice tin, clam shell, egg shell, coral, etc. It is generally colorless crystals or white solid, has a specific gravity of 2.93, and decomposes at 825 ℃.

When heated, carbon dioxide is produced and quicklime is obtained.

This reaction is an important reaction for industrially obtaining carbon dioxide and quicklime.

CaCO3 → CaO+CO2↑ It does not dissolve in pure water, but dissolves in water containing carbon dioxide, producing calcium hydrogen carbonate and dissolving. CaCO3+CO2+H2O ↔ Ca(HCO3)2 In addition, carbon dioxide is generated when an acid acts on calcium carbonate.

CaCO3+2HCl → CaCl2+H2O+CO2↑ When water containing carbon dioxide meets limestone in the ground, it dissolves and creates a cavity. This is a limestone cave, and the dissolved water is decomposed by geothermal heat, and calcium carbonate precipitates.

When this precipitation occurs in a limestone cave, it produces stalactites or stalagmites.

To obtain calcium carbonate in the laboratory, alkali carbonate is applied to a water-soluble calcium salt, or carbon dioxide is passed through lime water.

Industrially, it is obtained by crushing limestone to make powder, sieving it, or peeling (an operation that divides the particles according to their size or specific gravity using the difference in speed when solid particles freely settle in the air). This is called heavy calcium carbonate.

In addition, the precipitate produced by blowing carbon dioxide into lime oil is filtered, dried, and finely pulverized.

This is called hard calcium carbonate.

Also, the wet pulverization of shells is called whiting.

Calcium carbonate is widely used in industrial fields due to its low cost and low specific gravity.

That is, as limestone and marble, it is used as a main raw material for cement, as a raw material for calcium oxide, and as various neutralizing agents for iron making and building materials.

In addition, ash is used for white pigments and water-based paints, and precipitated calcium carbonate is used for pigments, paints, toothpaste, etc., and is also compounded in rubber as a reinforcing agent.

It is preferable to add and mix 15 parts by weight of the calcium carbonate based on 100 parts by weight of the rubber.

In addition, the diatomaceous earth is mainly made of silicic acid (SiO2), and has a white or grayish white color.

It is light and soft enough to smear powder when you touch it with your fingers.

Because it is microporous, it has strong water absorption.

Here, it is preferable to add and mix 5 parts by weight of the diatomaceous earth based on 100 parts by weight of rubber.

In addition, the sodium carboxy methyl cellulose is made into alkaline cellulose by putting sulfite pulp in an aqueous sodium hydroxide solution, dissolved in sodium chloroacetate, and precipitated in methyl alcohol.

It is usually obtained as a hygroscopic white solid sodium salt, and its properties differ depending on the degree of substitution of the carboxymethyl group.

When the degree of substitution is 0.3 or higher, it is dissolved in an aqueous alkali solution and precipitated as an acid.

At a degree of substitution of 0.4 or more, it swells and dissolves in water.

The viscosity of an aqueous solution depends on the pH and degree of polymerization.

Those with a degree of substitution of 0.5 to 0.8 do not precipitate even in acidity, but precipitate from alcohol.

Various salts are made from a polymer electrolyte.

Here, it is preferable to add 17.5 parts by weight of the sodium carboxy methyl cellulose to 100 parts by weight of the rubber.

In addition, the sodium polyacrylate is used as a thickener. It is widely used as a stabilizer, a cohesive clarifying agent, an emulsifying and dispersing agent, and a tissue improving agent.

It is a white powder, odorless, and when water is added, it expands and becomes a viscous liquid through a transparent gel. It becomes a salt with a divalent or higher metal, causing crosslinking between molecules and gelation.

Here, it is preferable to add 17.5 parts by weight of the sodium polyacrylate to 100 parts by weight of the rubber.

On the other hand, the sodium bentonite is a sodium-based waterproofing material among bentonite, and good quality sodium bentonite expands about 15 to 20 times its original volume when reacting with water, and absorbs water up to 5 times its weight. It is often used as a sealant, waterproofing material, and waterproofing material.

In particular, when sodium bentonite is less than 1 part by weight compared to 100 parts by weight of rubber, volume expansion is made less, and when it is more than 1. 3 parts by weight, there is a problem of rapid expansion.

Therefore, the sodium bentonite is preferably mixed by adding 1 to 1.3 parts by weight to 100 parts by weight of rubber.

The water-stop material combined expansion joint according to the present invention consisting of the above-described configuration is a water-stop product made of special modified rubber as the main raw material. It exhibits a double-acting water-stop effect with superior water-stop performance and simple construction than conventional water-stop plates, and by the elasticity of the rubber. It is a member that can have an exponential effect due to the sealing action between the new construction or construction joint), can control the maximum movement of the concrete structure 10, and can be waterproof by 10%.

In particular, it is very effective where excessive movement and extreme distortion of the concrete structure 10 occur.

In addition, the expansion joint for both waterstop materials according to the present invention has an activity range of 60% compression, 30% tension, and 120% shear stress, and physically exceeds the original design (theoretical expansion and contraction amount of the concrete structure 10). It is a member that can control up to.

In addition, the expansion joint for both waterstop material according to the present invention is sealed up to about 6.0kgf/cm2 to 10.0kgf/cm2 by contacting the water flowing into the expansion or construction joint of the concrete structure 10 and expanding by 2 to 10 times. By maintaining the pressure, the empty voids and waterways of the expansion joint (G) are completely sealed, so that the perfect water-stop performance can be exhibited.

Hereinafter, a description will be given of the manufacture of an elastic index material combined with an index material according to the present invention having the configuration as described above.

The method for manufacturing an elastic water-retaining material for both water-stop materials according to the present invention includes 100 parts by weight of rubber, one of natural rubber and synthetic rubber, in a ni-da mixer or a banbar re-mixer machine, which is a closed mixing/stirring machine, and stearic acid (a vulcanization aid). 1 part by weight), magnesium oxide (2.5 parts by weight), zinc oxide (2.5 parts by weight), sulfur (1.5%), mix and stir so that they are evenly mixed, and then petroleum resin (5 parts by weight) as a tackifier, and Couma Calcium carbonate as a filler after adding lone inden resin (2 parts by weight), polybutene (10 parts by weight), and polyisobutylene (3 parts by weight) and mixing and stirring so that the resin component is completely dispersed and mixed. (15 parts by weight), sodium carboxymethylcellulose (17.5 parts by weight), sodium polyacrylate (17.5 parts by weight), and sodium bentonite (1 to 1.3 parts by weight), which are water-expansion agents, are added together and stirred, while the process oil (5 parts by weight) is a softener. Part) is added and the mixture is stirred and mixed so that it is evenly dispersed. After cooling and cooling, a vulcanizing agent is added and stirred so that it is evenly dispersed again on a roller, and the mixture is homogeneously dispersed and mixed.

The unvulcanized rubber dough mixed and stirred as described above is re-stirred in an extruder while extruding to a certain standard and then semi-vulcanized at an average temperature of 160°C in a continuous vulcanizing machine that directly vulcanizes the extruded product.

Hereinafter, the construction of the concrete structure construction joint using the water-stop material combined expansion joint according to the present invention having the configuration as described above will be described.

Figures 8a to 8f is a process diagram 2 showing the construction state of the water-stop material combined expansion joint according to the present invention.

As shown in these drawings, the concrete structure construction joint construction method using a water-stop material combined expansion joint according to the present invention forms a cutting groove 12 by cutting a predetermined position of the concrete structure 10 using a cutting machine. The step (S 1); Forming a perforated hole 14 by drilling at both ends of the cutting groove 12 with a predetermined depth and width (S 2 ); Inserting a backup agent 16 at the bottom of the cutting groove 12 (S 3); Inserting the anchor bolt 18 into the perforated hole 14 (S 4); Applying the adhesive 20 to the cutting groove 12 and the perforated hole 14 (S 5); Installing an expansion joint (J) for both waterstop and contraction according to claim 1 in the upper portion of the backup agent (16) and the cutting groove (12) (S6); Filling the concrete reinforcement agent 22 around the water-stop material combined expansion joint (J) (S 7); Installing a support rubber plate 24 over the concrete reinforcing agent 22 and the anchor bolt 18 and the elastic joint (J) for both waterstop material (S 8); Installing the support iron plate 26 on the support rubber plate 24 in the same line as the ground (S 9); It consists of a step (S10) of fixing the support iron plate 26 to the anchor bolt 18 with a nut 28.

That is, the concrete structure construction joint construction method using a water-stop material combined expansion joint according to the present invention comprises: a cutting groove 12 forming step (S 1); Hole 14 forming step (S 2); Backup agent 16 inserting step (S 3); Anchor bolt 18 insertion step (S 4); Adhesive 20 applying step (S 5); Water-stop material combined expansion joint (J) installation step (S 6); Concrete reinforcing agent 22 filling step (S 7); Support rubber plate 24 installation step (S 8); Support iron plate 26 installation step (S 9); The anchor bolt 18 is to install the expansion joint (J) for both waterstop material by sequentially performing the fixing step (S 10).

Here, in the step of forming the cutting groove 12 (S1), the new construction or construction joint of the target concrete structure 10 is cut using a cutting machine to form the cutting groove 12 in multiple stages for each of the lower, middle, and upper ends. .

In particular, the cutting machine is a power tool that uses electric power, and is a tool capable of cutting the surface of the concrete structure 10 expansion or construction joint in a certain shape by adjusting the cutting edge of the cutting machine.

The size of the cutting groove 12 for cutting the surface of the concrete structure 10 at a predetermined interval and depth is formed to be about 25±5% smaller than the volume of the expansion joint J installed therein.

Meanwhile, the inside of the cutting groove 12 of the concrete structure 10 cut with the cutting machine is removed by using a high pressure cleaner (150±50kg/m2) to remove foreign matter remaining on the surface of the concrete structure 10.

At this time, if water cannot be used, clean it with a brush brush, compressed air, and a vacuum aspirator.

In addition, the part of the concrete structure 10 that is soiled by oil or fat is cleaned using a solvent or a dedicated detergent.

Subsequently, in the step of forming the perforated hole 14 (S 2 ), a perforated hole 14 through which the anchor bolt 18 can be inserted is formed by drilling at both ends of the cutting groove 12 with a predetermined depth and width.

Subsequently, the insertion step (S3) of the backup agent 16 is a polyurethane foam or a member having a performance equivalent thereto, and a backup agent 16 having a specific gravity of 0.001 to 0.1 or more is added to the expansion joint (G). Insert in.

Subsequently, the anchor bolt 18 inserting step (S4) inserts the anchor bolt 18 into the perforated hole 14.

Subsequently, in the step of applying the adhesive 20 (S5), an epoxy-based wet adhesive 20 is used on the contact surface of the concrete structure 10 including the cutting groove 12 and the perforated hole 14, and the adhesive 20 ) Is a two-component material of the main and hardener, and after mixing at the correct mixing ratio (subject 2: hardener 1), it is applied to the surface of the concrete structure 10 and the expansion joint (J) for both water-stop materials.

Subsequently, the installation step (S6) of the water-stop material combined expansion joint (J) includes the upper part of the backup agent 16 and the cutting groove 12 with different sizes of the lower, middle, and upper water-stop material combined expansion joint (J). Install.;

Subsequently, in the step of filling the concrete reinforcement 22 (S7), the concrete reinforcement 22 is filled in the lower and side surfaces of the expansion joint J for both water-stop materials.

Here, the concrete reinforcement 22 is filled with a concrete reinforcement 22 composed of silicate in the deteriorated portion of the high-pressure-washed concrete structure 10.

In particular, the silicate is a generic term for a neutral salt in which hydrogen of various silicic acids is substituted with a metal atom, and is a compound containing an anion in which one or more silicon center atoms are surrounded by a negatively charged ligand.

The concrete strengthening agent 22 is used by adding 25% by weight of water to 75% by weight of silicate.

Subsequently, in the installation step (S8) of the support rubber plate 24, the support rubber plate 24 is installed over the concrete reinforcement 22, the anchor bolt 18, and the expansion joint J for both waterstop material.

Subsequently, in the step of installing the support iron plate 26 (S9), the support iron plate 26 having a predetermined shape is installed on the support rubber plate 24 in the same line with the ground.

Subsequently, in the fixing step (S10) of the anchor bolt 18, the anchor bolt 18 inserted into the perforated hole 14 through the support plate 26 is fixed with a nut 28 on the support rubber plate 24.

The concrete structure construction joint construction method using the expansion joint for both waterstop material according to the present invention consisting of the steps as described above is a water-stop product made of special modified rubber as the main material, and has a dual-operation index effect with superior water-stop performance and simple construction than conventional water-stop plates. It can have a water-stop effect by sealing action between expansion or construction joints by the rubber elasticity of the expansion joint (J) for both water-stop material and control the maximum movement of the concrete structure (10). % Waterproof, very effective in places where excessive movement and extreme warping of the concrete structure (10) occur, and has an activity range of 60% compression, 30% tensile, and 120% shear stress, and is physically original design It is possible to control the movement exceeding (theoretical expansion and contraction amount of concrete structure), and the expansion of the concrete structure 10 or expansion of the concrete structure 10 or expansion of the concrete structure 10 by contact with water flowed into the joint and expanding up to 2 to 10 times, up to 6.0kgf/㎠ to 10.0kgf By maintaining the sealing pressure of about /㎠, empty voids and water paths of expansion or construction joints are completely sealed, so that perfect water-stop performance can be exhibited.

[Example 3]

Figure 9 is a plan view 3 showing the installation state of the water-stop material combined expansion joint according to the present invention, Figure 10 is a detailed view showing an enlarged portion "A" of Figure 9, Figure 11 is a water-stop material combined expansion and contraction according to the present invention It is a cross-sectional view 3 showing the installation state of the joint material.

As shown in these figures, the water-stop material combined expansion joint according to the present invention is one of natural rubber or synthetic rubber 100 parts by weight of rubber; 1 part by weight of stearic acid; 2.5 parts by weight of magnesium oxide; 2.5 parts by weight of zinc oxide; 1 to 1.3 parts by weight of sulfur; 5 parts by weight of Petroleum Resin; 2 parts by weight of Kumaron Resin; 10 parts by weight of polybutene; 3 parts by weight of polyisobutylene; 5 parts by weight of process oil; 15 parts by weight of calcium carbonate; 5 parts by weight of Diatomaceous Earth; Sodium Carboxymethyl Cellulose 17.5 parts by weight; 17.5 parts by weight of sodium polyacrylate; It consists of 1 to 1.3 parts by weight of sodium bentonite.

That is, the elasticity index material is rubber, stearic acid, magnesium oxide, zinc oxide, sulfur, petroleum resin, coumarone indene resin, polybutene, polyisobutylene, process oil, calcium carbonate, diatomaceous earth, sodium carboxy methylcellulose , Sodium polyacrylate and sodium bentonite.

Here, since the rubber has unique properties for each type, synthesis of natural rubber, SBR rubber, IR rubber, BR rubber, EPT rubber, IIR rubber, CR rubber, NBR rubber, urethane rubber, etc. Rubber may be used alone, or natural rubber and synthetic rubber may be used in combination.

In addition, the stearic acid is white at room temperature, has a thin leaf-shaped crystal, has a melting point of about 71°C, is not soluble in water, is well soluble in organic solvents, and is a kind of saturated fatty acid that exists in a solid state at room temperature. It is preferable to add and mix 1 part by weight based on 100 parts by weight of rubber.

In addition, the magnesium oxide is also referred to as goto, and industrially, it is also referred to as magnesia.

Chemical formula MgO. Although it is a white amorphous powder, equiaxed crystals precipitate from a solution dissolved with borate.

It has a molecular weight of 40.32, a melting point of 2,800°C, a boiling point of 3,600°C, and a specific gravity of 3.2 to 3.7.

It is slightly soluble in water and is alkaline, but is easily soluble in acid and ammonia water.

It absorbs water and carbon dioxide in the air and gradually becomes magnesium hydroxycarbonate.

It is formed by heating metallic magnesium in the air or by thermally decomposing magnesium carbonate.

It is preferable to add and mix 2.5 parts by weight of the magnesium oxide based on 100 parts by weight of the rubber.

In addition, the zinc oxide is a colorless crystal ZnO that is insoluble in water. The powder is called zinc oxide, zinc white, etc.

It is a light white powder with a melting point of 1,975°C (pressurized) and 1,720°C (normal pressure), and specific gravity of 5.47 (amorphous) and 5.78 (crystalline).

It turns yellow when heated to about 300℃, but becomes its original color when cooled.

It is an amphoteric oxide that is hardly soluble in water, but soluble in dilute acids and concentrated alkalis.

Naturally, it is produced as red zinc, and industrially, it is made by heating and vaporizing metallic zinc and burning it with air or burning zinc sulfate or zinc nitrate.

It is important as a white pigment because the particles are fine and the covering power is lower than that of light white, but it is not toxic and does not turn black by hydrogen sulfide.

In addition, it is preferable to add and mix 2.5 parts by weight of the zinc oxide based on 100 parts by weight of the rubber.

In addition, the sulfur has a melting point of 120° C. and a specific gravity of 1.92.

At room temperature, it is a yellow, odorless, crisp crystal. At high temperature, it combines with almost all metals or hydrogen except gold and platinum to form sulfides.

It is preferable that the sulfur is added and mixed in an amount of 1 to 1.3 parts by weight based on 100 parts by weight of rubber.

In addition, the petroleum resin is a light yellow or dark brown thermoplastic resin having a molecular weight of 2000 or less obtained by polymerization with an acidic catalyst using higher unsaturated hydrocarbons in high-temperature pyrolysis oil such as naphtha as a raw material. There are two types: olefinic and aromatic.

In general, the aromatic series produced is a lost flake or lump-shaped solid with a softening point of 70~140℃ and a specific gravity of 1.00~1.10, and it is soluble in organic solvents excluding alcohol.

It is mixed with alkyd resin, chromaon indene resin, phenolic resin, rodin, natural rubber, and synthetic rubber.

It is preferable to add and mix 5 parts by weight of the petroleum resin based on 100 parts by weight of rubber.

In addition, the coumarone indene resin is polymerized by heat or catalyst after purifying the distillate of tar at 160 to 180°C.

Sulfuric acid is mainly used as a catalyst, and other Friedel-Crafts type catalysts, inorganic acids, organic acids, and metal halides of any kind are also used.

The color tone, transparency, hardness, softening point, and solubility are different depending on the purity of the raw material and the polymerization method.

In general, it is light brown to black, and the softening point is 50 to 160°C. It is soluble by many organic solvents, especially aromatic hydrocarbons.

It is chemically neutral and has high acid and alkali resistance.

It is preferable to add and mix 2 parts by weight of the coumarone inden resin based on 100 parts by weight of the rubber.

In addition, the polybutene is soluble in benzene, chloroform, gasoline, petroleum ether, and is not soluble in water, alcohol, or acetone.

It is a synthetic resin that is stable to heat or sunlight and has a lower viscosity than polyisobutylene.

It has excellent water resistance, moisture resistance, and gas impermeability. When mixed with vinyl acetate resin, it increases water resistance and prevents softening due to saliva mixing.

It is used alone or in combination with polyisobutylene, and polyisobutylene is used when high viscosity is required.

It is preferable to add and mix 10 parts by weight of the polybutene based on 100 parts by weight of the rubber.

In addition, the polyisobutylene is a generic term for an isobutylene ((CH)C=CH) polymer, and is also referred to as polyisobutene.

Polymerization with a cation catalyst such as trifluoroboric acid at a low temperature near -100°C can yield a high polymer having a molecular weight of 100,000 or more.

High molecular weight polyisobutylene: It has a polymerization degree of 1,000 or more and is a rubber-like solid, but it is chemically stable because it does not have unsaturated bonds in the polymer.

Here, it is preferable to add 3 parts by weight of the polyisobutylene to 100 parts by weight of the rubber.

In addition, the process oil is a kind of softener that facilitates processing of synthetic rubber, and improves physical properties to some extent.

Only oils mixed with synthetic rubber by mixing rollers, extruders, Bumbury mixers, etc. are referred to as such.

By lubricating the rubber molecules, the movement of the molecules is free, and internal friction is reduced to reduce heat generation during mixing.

In addition, it helps to disperse the filler, improves workability, improves elasticity and refraction of the vulcanized rubber, improves tensile strength and abrasion resistance, and helps to lower the price.

In the styrene-butadiene-based synthetic rubber, petroleum distillates and aromatic hydrocarbons having a high boiling point are used, and if the blending amount of carbon black is large, the amount of process oil added increases, such as rubber powder 100, carbon black 60, and aromatic process oil 20. A compatible petroleum distillate is used for the chloroprene-based synthetic rubber, and stearic acid is added to the nitrile-based synthetic rubber.

Here, it is preferable to add and mix 5 parts by weight of the process oil based on 100 parts by weight of the rubber.

And, the calcium carbonate is the formula CaCO3. Among the salts that exist in nature, it is the most common.

There are various forms, and exist as marble, calico, berth, limestone, chalk, ice tin, clam shell, egg shell, coral, etc. It is generally colorless crystals or white solid, has a specific gravity of 2.93, and decomposes at 825 ℃.

When heated, carbon dioxide is produced and quicklime is obtained.

This reaction is an important reaction for industrially obtaining carbon dioxide and quicklime.

CaCO3 → CaO+CO2↑ It does not dissolve in pure water, but dissolves in water containing carbon dioxide, producing calcium hydrogen carbonate and dissolving. CaCO3+CO2+H2O ↔ Ca(HCO3)2 In addition, carbon dioxide is generated when an acid acts on calcium carbonate.

CaCO3+2HCl → CaCl2+H2O+CO2↑ When water containing carbon dioxide meets limestone in the ground, it dissolves and creates a cavity. This is a limestone cave, and the dissolved water is decomposed by geothermal heat, and calcium carbonate precipitates.

When this precipitation occurs in a limestone cave, it produces stalactites or stalagmites.

To obtain calcium carbonate in the laboratory, alkali carbonate is applied to a water-soluble calcium salt, or carbon dioxide is passed through lime water.

Industrially, it is obtained by crushing limestone to make powder, sieving it, or peeling (an operation that divides the particles according to their size or specific gravity using the difference in speed when solid particles freely settle in the air). This is called heavy calcium carbonate.

In addition, the precipitate produced by blowing carbon dioxide into lime oil is filtered, dried, and finely pulverized.

This is called hard calcium carbonate.

Also, the wet pulverization of shells is called whiting.

Calcium carbonate is widely used in industrial fields due to its low cost and low specific gravity.

That is, as limestone and marble, it is used as a main raw material for cement, as a raw material for calcium oxide, and as various neutralizing agents for iron making and building materials.

In addition, ash is used for white pigments and water-based paints, and precipitated calcium carbonate is used for pigments, paints, toothpaste, etc., and is also compounded in rubber as a reinforcing agent.

It is preferable to add and mix 15 parts by weight of the calcium carbonate based on 100 parts by weight of the rubber.

In addition, the diatomaceous earth is mainly made of silicic acid (SiO2), and has a white or grayish white color.

It is light and soft enough to smear powder when you touch it with your fingers.

Because it is microporous, it has strong water absorption.

Here, it is preferable to add and mix 5 parts by weight of the diatomaceous earth based on 100 parts by weight of rubber.

In addition, the sodium carboxy methyl cellulose is made into alkaline cellulose by putting sulfite pulp in an aqueous sodium hydroxide solution, dissolved in sodium chloroacetate, and precipitated in methyl alcohol.

It is usually obtained as a hygroscopic white solid sodium salt, and its properties differ depending on the degree of substitution of the carboxymethyl group.

When the degree of substitution is 0.3 or higher, it is dissolved in an aqueous alkali solution and precipitated as an acid.

At a degree of substitution of 0.4 or more, it swells and dissolves in water.

The viscosity of an aqueous solution depends on the pH and degree of polymerization.

Those with a degree of substitution of 0.5 to 0.8 do not precipitate even in acidity, but precipitate from alcohol.

Various salts are made from a polymer electrolyte.

Here, it is preferable to add 17.5 parts by weight of the sodium carboxy methyl cellulose to 100 parts by weight of the rubber.

In addition, the sodium polyacrylate is used as a thickener. It is widely used as a stabilizer, a cohesive clarifying agent, an emulsifying and dispersing agent, and a tissue improving agent.

It is a white powder, odorless, and when water is added, it expands and becomes a viscous liquid through a transparent gel. It becomes a salt with a divalent or higher metal, causing crosslinking between molecules and gelation.

Here, it is preferable to add 17.5 parts by weight of the sodium polyacrylate to 100 parts by weight of the rubber.

On the other hand, the sodium bentonite is a sodium-based waterproofing material among bentonite, and good quality sodium bentonite expands about 15 to 20 times its original volume when reacting with water, and absorbs water up to 5 times its weight. It is often used as a sealant, waterproofing material, and waterproofing material.

In particular, when sodium bentonite is less than 1 part by weight compared to 100 parts by weight of rubber, volume expansion is made less, and when it is more than 1. 3 parts by weight, there is a problem of rapid expansion.

Therefore, the sodium bentonite is preferably mixed by adding 1 to 1.3 parts by weight to 100 parts by weight of rubber.

The water-stop material combined expansion joint according to the present invention consisting of the above-described configuration is a water-stop product made of special modified rubber as the main raw material. It exhibits a double-acting water-stop effect with superior water-stop performance and simple construction than conventional water-stop plates, and by the elasticity of the rubber. It is a member that can have an exponential effect due to the sealing action between the new construction or construction joint), can control the maximum movement of the concrete structure 10, and can be waterproof by 10%.

In particular, it is very effective where excessive movement and extreme distortion of the concrete structure 10 occur.

In addition, the expansion joint for both water-stop materials according to the present invention has an activity range of 60% compression, 30% tension, and 120% shear stress, and can physically control movements exceeding the original design (theoretical expansion and contraction amount of concrete structures). It is an absence that can be.

In addition, the expansion joint for both waterstop material according to the present invention is sealed up to about 6.0kgf/cm2 to 10.0kgf/cm2 by contacting the water flowing into the expansion or construction joint of the concrete structure 10 and expanding by 2 to 10 times. By maintaining the pressure, the empty voids and waterways of the expansion joint (G) are completely sealed, so that the perfect water-stop performance can be exhibited.

Hereinafter, a description will be given of the manufacture of an elastic index material combined with an index material according to the present invention having the configuration as described above.

The method for manufacturing an elastic water-retaining material for both water-stop materials according to the present invention includes 100 parts by weight of rubber, one of natural rubber and synthetic rubber, in a ni-da mixer or a banbar re-mixer machine, which is a closed mixing/stirring machine, and stearic acid (a vulcanization aid). 1 part by weight), magnesium oxide (2.5 parts by weight), zinc oxide (2.5 parts by weight), sulfur (1.5%), mix and stir so that they are evenly mixed, and then petroleum resin (5 parts by weight) as a tackifier, and Couma Calcium carbonate as a filler after adding lone inden resin (2 parts by weight), polybutene (10 parts by weight), and polyisobutylene (3 parts by weight) and mixing and stirring so that the resin component is completely dispersed and mixed. (15 parts by weight), sodium carboxymethylcellulose (17.5 parts by weight), sodium polyacrylate (17.5 parts by weight), and sodium bentonite (1 to 1.3 parts by weight), which are water-expansion agents, are added together and stirred, while the process oil (5 parts by weight) is a softener. Part) is added and the mixture is stirred and mixed so that it is evenly dispersed. After cooling and cooling, a vulcanizing agent is added and stirred so that it is evenly dispersed again on a roller, and the mixture is homogeneously dispersed and mixed.

The unvulcanized rubber dough mixed and stirred as described above is re-stirred in an extruder while extruding to a certain standard and then semi-vulcanized at an average temperature of 160°C in a continuous vulcanizing machine that directly vulcanizes the extruded product.

Hereinafter, the construction of the concrete structure construction joint using the water-stop material combined expansion joint according to the present invention having the configuration as described above will be described.

Figures 12a to 12f is a process diagram 3 showing the construction state of the water-stop material combined expansion joint according to the present invention.

As shown in these drawings, the concrete structure construction joint construction method using a water-stop material combined expansion joint according to the present invention forms a cutting groove 12 by cutting a predetermined position of the concrete structure 10 using a cutting machine. The step (S 1); Forming a perforated hole 14 by drilling at both ends of the cutting groove 12 with a predetermined depth and width (S 2 ); Inserting a backup agent 16 at the bottom of the cutting groove 12 (S 3); Inserting the anchor bolt 18 into the perforated hole 14 (S 4); Applying the adhesive 20 to the cutting groove 12 and the perforated hole 14 (S 5); Installing an expansion joint (J) for both waterstop and contraction according to claim 1 in the upper portion of the backup agent (16) and the cutting groove (12) (S6); Filling the concrete reinforcement agent 22 around the water-stop material combined expansion joint (J) (S 7); Installing the support rubber plate 24 so as to protrude from the ground over the concrete reinforcement agent 22 and the anchor bolt 18 and the water-stop material combined expansion joint (J) (S 8); Installing a support iron plate 26 on the support rubber plate 24 (S 9); It consists of a step (S10) of fixing the support iron plate 26 to the anchor bolt 18 with a nut 28.

That is, the concrete structure construction joint construction method using a water-stop material combined expansion joint according to the present invention comprises: a cutting groove 12 forming step (S 1); Hole 14 forming step (S 2); Backup agent 16 inserting step (S 3); Anchor bolt 18 insertion step (S 4); Adhesive 20 applying step (S 5); Water-stop material combined expansion joint (J) installation step (S 6); Concrete reinforcing agent 22 filling step (S 7); Support rubber plate 24 installation step (S 8); Support iron plate 26 installation step (S 9); Anchor bolt 18 fixing step (S 10); The backup agent 16 and the sealant 30 filling step (S 11) are sequentially performed to install a water-stop material combined expansion joint (J).

Here, in the step of forming the cutting groove 12 (S1), the new construction or construction joint of the target concrete structure 10 is cut using a cutting machine to form the cutting groove 12 in multiple stages for each of the lower, middle, and upper ends. .

In particular, the cutting machine is a power tool that uses electric power, and is a tool capable of cutting the surface of the concrete structure 10 expansion or construction joint in a certain shape by adjusting the cutting edge of the cutting machine.

The size of the cutting groove 12 for cutting the surface of the concrete structure 10 at a predetermined interval and depth is formed to be about 25±5% smaller than the volume of the expansion joint J installed therein.

Meanwhile, the inside of the cutting groove 12 of the concrete structure 10 cut with the cutting machine is removed by using a high pressure cleaner (150±50kg/m2) to remove foreign matter remaining on the surface of the concrete structure 10.

At this time, if water cannot be used, clean it with a brush brush, compressed air, and a vacuum aspirator.

In addition, the part of the concrete structure 10 that is soiled by oil or fat is cleaned using a solvent or a dedicated detergent.

Subsequently, in the step of forming the perforated hole 14 (S 2 ), a perforated hole 14 through which the anchor bolt 18 can be inserted is formed by drilling at both ends of the cutting groove 12 with a predetermined depth and width.

Subsequently, the insertion step (S3) of the backup agent 16 is a polyurethane foam or a member having a performance equivalent thereto, and a backup agent 16 having a specific gravity of 0.001 to 0.1 or more is added to the expansion joint (G). Insert in.

Subsequently, the anchor bolt 18 inserting step (S4) inserts the anchor bolt 18 into the perforated hole 14.

Subsequently, in the step of applying the adhesive 20 (S5), an epoxy-based wet adhesive 20 is used on the contact surface of the concrete structure 10 including the cutting groove 12 and the perforated hole 14, and the adhesive 20 ) Is a two-component material of the main and hardener, and after mixing at the correct mixing ratio (subject 2: hardener 1), it is applied to the surface of the concrete structure 10 and the expansion joint (J) for both water-stop materials.

Subsequently, the installation step (S6) of the water-stop material combined expansion joint (J) includes the upper part of the backup agent 16 and the cutting groove 12 with different sizes of the lower, middle, and upper water-stop material combined expansion joint (J). Install.;

Subsequently, in the step of filling the concrete reinforcement 22 (S7), the concrete reinforcement 22 is filled in the lower and side surfaces of the expansion joint J for both water-stop materials.

Here, the concrete reinforcement 22 is filled with a concrete reinforcement 22 composed of silicate in the deteriorated portion of the high-pressure-washed concrete structure 10.

In particular, the silicate is a generic term for a neutral salt in which hydrogen of various silicic acids is substituted with a metal atom, and is a compound containing an anion in which one or more silicon center atoms are surrounded by a negatively charged ligand.

The concrete strengthening agent 22 is used by adding 25% by weight of water to 75% by weight of silicate.

Subsequently, in the installation step (S8) of the support rubber plate 24, the support rubber plate 24 is installed to protrude from the ground over the concrete reinforcement 22, the anchor bolt 18, and the expansion joint J for both waterstop material. .

Subsequently, in the step of installing the support iron plate 26 (S9), the support iron plate 26 having a predetermined shape is installed on the support rubber plate 24 in the same line with the ground.

Subsequently, in the fixing step (S10) of the anchor bolt 18, the anchor bolt 18 inserted into the perforated hole 14 through the support plate 26 is fixed with a nut 28 on the support rubber plate 24.

The concrete structure construction joint construction method using the expansion joint for both waterstop material according to the present invention consisting of the steps as described above is a water-stop product made of special modified rubber as the main material, and has a dual-operation index effect with superior water-stop performance and simple construction than conventional water-stop plates. It can have a water-stop effect by sealing action between expansion or construction joints by the rubber elasticity of the expansion joint (J) for both water-stop material and control the maximum movement of the concrete structure (10). % Waterproof, very effective in places where excessive movement and extreme warping of the concrete structure (10) occur, and has an activity range of 60% compression, 30% tensile, and 120% shear stress, and is physically original design It is possible to control the movement exceeding (theoretical expansion and contraction amount of concrete structure), and the expansion of the concrete structure 10 or expansion of the concrete structure 10 or expansion of the concrete structure 10 by contact with water flowed into the joint and expanding up to 2 to 10 times, up to 6.0kgf/㎠ to 10.0kgf By maintaining the sealing pressure of about /㎠, empty voids and water paths of expansion or construction joints are completely sealed, so that perfect water-stop performance can be exhibited.

[Example 4]

Figure 13 is a plan view 4 showing the installation state of the water-stop material combined expansion joint according to the present invention, Figure 14 is a detailed view showing an enlarged portion "A" of Figure 13, Figure 15 is a water-stop material combined expansion and contraction according to the present invention It is a cross-sectional view 4 showing the installation state of the joint material.

As shown in these figures, the water-stop material combined expansion joint according to the present invention is one of natural rubber or synthetic rubber 100 parts by weight of rubber; 1 part by weight of stearic acid; 2.5 parts by weight of magnesium oxide; 2.5 parts by weight of zinc oxide; 1 to 1.3 parts by weight of sulfur; 5 parts by weight of Petroleum Resin; 2 parts by weight of Kumaron Resin; 10 parts by weight of polybutene; 3 parts by weight of polyisobutylene; 5 parts by weight of process oil; 15 parts by weight of calcium carbonate; 5 parts by weight of Diatomaceous Earth; Sodium Carboxymethyl Cellulose 17.5 parts by weight; 17.5 parts by weight of sodium polyacrylate; It consists of 1 to 1.3 parts by weight of sodium bentonite.

That is, the elasticity index material is rubber, stearic acid, magnesium oxide, zinc oxide, sulfur, petroleum resin, coumarone indene resin, polybutene, polyisobutylene, process oil, calcium carbonate, diatomaceous earth, sodium carboxy methylcellulose , Sodium polyacrylate and sodium bentonite.

Here, since the rubber has unique properties for each type, synthesis of natural rubber, SBR rubber, IR rubber, BR rubber, EPT rubber, IIR rubber, CR rubber, NBR rubber, urethane rubber, etc. Rubber may be used alone, or natural rubber and synthetic rubber may be used in combination.

In addition, the stearic acid is white at room temperature, has a thin leaf-shaped crystal, has a melting point of about 71°C, is not soluble in water, is well soluble in organic solvents, and is a kind of saturated fatty acid that exists in a solid state at room temperature. It is preferable to add and mix 1 part by weight based on 100 parts by weight of rubber.

In addition, the magnesium oxide is also referred to as goto, and industrially, it is also referred to as magnesia.

Chemical formula MgO. Although it is a white amorphous powder, equiaxed crystals precipitate from a solution dissolved with borate.

It has a molecular weight of 40.32, a melting point of 2,800°C, a boiling point of 3,600°C, and a specific gravity of 3.2 to 3.7.

It is slightly soluble in water and is alkaline, but is easily soluble in acid and ammonia water.

It absorbs water and carbon dioxide in the air and gradually becomes magnesium hydroxycarbonate.

It is formed by heating metallic magnesium in the air or by thermally decomposing magnesium carbonate.

It is preferable to add and mix 2.5 parts by weight of the magnesium oxide based on 100 parts by weight of the rubber.

In addition, the zinc oxide is a colorless crystal ZnO that is insoluble in water. The powder is called zinc oxide, zinc white, etc.

It is a light white powder with a melting point of 1,975°C (pressurized) and 1,720°C (normal pressure), and specific gravity of 5.47 (amorphous) and 5.78 (crystalline).

It turns yellow when heated to about 300℃, but becomes its original color when cooled.

It is an amphoteric oxide that is hardly soluble in water, but soluble in dilute acids and concentrated alkalis.

Naturally, it is produced as red zinc, and industrially, it is made by heating and vaporizing metallic zinc and burning it with air or burning zinc sulfate or zinc nitrate.

It is important as a white pigment because the particles are fine and the covering power is lower than that of light white, but it is not toxic and does not turn black by hydrogen sulfide.

In addition, it is preferable to add and mix 2.5 parts by weight of the zinc oxide based on 100 parts by weight of the rubber.

In addition, the sulfur has a melting point of 120° C. and a specific gravity of 1.92.

At room temperature, it is a yellow, odorless, crisp crystal. At high temperature, it combines with almost all metals or hydrogen except gold and platinum to form sulfides.

It is preferable that the sulfur is added and mixed in an amount of 1 to 1.3 parts by weight based on 100 parts by weight of rubber.

In addition, the petroleum resin is a light yellow or dark brown thermoplastic resin having a molecular weight of 2000 or less obtained by polymerization with an acidic catalyst using higher unsaturated hydrocarbons in high-temperature pyrolysis oil such as naphtha as a raw material. There are two types: olefinic and aromatic.

In general, the aromatic series produced is a lost flake or lump-shaped solid with a softening point of 70~140℃ and a specific gravity of 1.00~1.10, and it is soluble in organic solvents excluding alcohol.

It is mixed with alkyd resin, chromaon indene resin, phenolic resin, rodin, natural rubber, and synthetic rubber.

It is preferable to add and mix 5 parts by weight of the petroleum resin based on 100 parts by weight of rubber.

In addition, the coumarone indene resin is polymerized by heat or catalyst after purifying the distillate of tar at 160 to 180°C.

Sulfuric acid is mainly used as a catalyst, and other Friedel-Crafts type catalysts, inorganic acids, organic acids, and metal halides of any kind are also used.

The color tone, transparency, hardness, softening point, and solubility are different depending on the purity of the raw material and the polymerization method.

In general, it is light brown to black, and the softening point is 50 to 160°C. It is soluble by many organic solvents, especially aromatic hydrocarbons.

It is chemically neutral and has high acid and alkali resistance.

It is preferable to add and mix 2 parts by weight of the coumarone inden resin based on 100 parts by weight of the rubber.

In addition, the polybutene is soluble in benzene, chloroform, gasoline, petroleum ether, and is not soluble in water, alcohol, or acetone.

It is a synthetic resin that is stable to heat or sunlight and has a lower viscosity than polyisobutylene.

It has excellent water resistance, moisture resistance, and gas impermeability. When mixed with vinyl acetate resin, it increases water resistance and prevents softening due to saliva mixing.

It is used alone or in combination with polyisobutylene, and polyisobutylene is used when high viscosity is required.

It is preferable to add and mix 10 parts by weight of the polybutene based on 100 parts by weight of the rubber.

In addition, the polyisobutylene is a generic term for an isobutylene ((CH)C=CH) polymer, and is also referred to as polyisobutene.

Polymerization with a cation catalyst such as trifluoroboric acid at a low temperature near -100°C can yield a high polymer having a molecular weight of 100,000 or more.

High molecular weight polyisobutylene: It has a polymerization degree of 1,000 or more and is a rubber-like solid, but it is chemically stable because it does not have unsaturated bonds in the polymer.

Here, it is preferable to add 3 parts by weight of the polyisobutylene to 100 parts by weight of the rubber.

In addition, the process oil is a kind of softener that facilitates processing of synthetic rubber, and improves physical properties to some extent.

Only oils mixed with synthetic rubber by mixing rollers, extruders, Bumbury mixers, etc. are referred to as such.

By lubricating the rubber molecules, the movement of the molecules is free, and internal friction is reduced to reduce heat generation during mixing.

In addition, it helps to disperse the filler, improves workability, improves elasticity and refraction of the vulcanized rubber, improves tensile strength and abrasion resistance, and helps to lower the price.

In the styrene-butadiene-based synthetic rubber, petroleum distillates and aromatic hydrocarbons having a high boiling point are used, and if the blending amount of carbon black is large, the amount of process oil added increases, such as rubber powder 100, carbon black 60, and aromatic process oil 20. A compatible petroleum distillate is used for the chloroprene-based synthetic rubber, and stearic acid is added to the nitrile-based synthetic rubber.

Here, it is preferable to add and mix 5 parts by weight of the process oil based on 100 parts by weight of the rubber.

And, the calcium carbonate is the formula CaCO3. Among the salts that exist in nature, it is the most common.

There are various forms, and exist as marble, calico, berth, limestone, chalk, ice tin, clam shell, egg shell, coral, etc. It is generally colorless crystals or white solid, has a specific gravity of 2.93, and decomposes at 825 ℃.

When heated, carbon dioxide is produced and quicklime is obtained.

This reaction is an important reaction for industrially obtaining carbon dioxide and quicklime.

CaCO3 → CaO+CO2↑ It does not dissolve in pure water, but dissolves in water containing carbon dioxide, producing calcium hydrogen carbonate and dissolving. CaCO3+CO2+H2O ↔ Ca(HCO3)2 In addition, carbon dioxide is generated when an acid acts on calcium carbonate.

CaCO3+2HCl → CaCl2+H2O+CO2↑ When water containing carbon dioxide meets limestone in the ground, it dissolves and creates a cavity. This is a limestone cave, and the dissolved water is decomposed by geothermal heat, and calcium carbonate precipitates.

When this precipitation occurs in a limestone cave, it produces stalactites or stalagmites.

To obtain calcium carbonate in the laboratory, alkali carbonate is applied to a water-soluble calcium salt, or carbon dioxide is passed through lime water.

Industrially, it is obtained by crushing limestone to make powder, sieving it, or peeling (an operation that divides the particles according to their size or specific gravity using the difference in speed when solid particles freely settle in the air). This is called heavy calcium carbonate.

In addition, the precipitate produced by blowing carbon dioxide into lime oil is filtered, dried, and finely pulverized.

This is called hard calcium carbonate.

Also, the wet pulverization of shells is called whiting.

Calcium carbonate is widely used in industrial fields due to its low cost and low specific gravity.

That is, as limestone and marble, it is used as a main raw material for cement, as a raw material for calcium oxide, and as various neutralizing agents for iron making and building materials.

In addition, ash is used for white pigments and water-based paints, and precipitated calcium carbonate is used for pigments, paints, toothpaste, etc., and is also compounded in rubber as a reinforcing agent.

It is preferable to add and mix 15 parts by weight of the calcium carbonate based on 100 parts by weight of the rubber.

In addition, the diatomaceous earth is mainly made of silicic acid (SiO2), and has a white or grayish white color.

It is light and soft enough to smear powder when you touch it with your fingers.

Because it is microporous, it has strong water absorption.

Here, it is preferable to add and mix 5 parts by weight of the diatomaceous earth based on 100 parts by weight of rubber.

In addition, the sodium carboxy methyl cellulose is made into alkaline cellulose by putting sulfite pulp in an aqueous sodium hydroxide solution, dissolved in sodium chloroacetate, and precipitated in methyl alcohol.

It is usually obtained as a hygroscopic white solid sodium salt, and its properties differ depending on the degree of substitution of the carboxymethyl group.

When the degree of substitution is 0.3 or higher, it is dissolved in an aqueous alkali solution and precipitated as an acid.

At a degree of substitution of 0.4 or more, it swells and dissolves in water.

The viscosity of an aqueous solution depends on the pH and degree of polymerization.

Those with a degree of substitution of 0.5 to 0.8 do not precipitate even in acidity, but precipitate from alcohol.

Various salts are made from a polymer electrolyte.

Here, it is preferable to add 17.5 parts by weight of the sodium carboxy methyl cellulose to 100 parts by weight of the rubber.

In addition, the sodium polyacrylate is used as a thickener. It is widely used as a stabilizer, a cohesive clarifying agent, an emulsifying and dispersing agent, and a tissue improving agent.

It is a white powder, odorless, and when water is added, it expands and becomes a viscous liquid through a transparent gel. It becomes a salt with a divalent or higher metal, causing crosslinking between molecules and gelation.

Here, it is preferable to add 17.5 parts by weight of the sodium polyacrylate to 100 parts by weight of the rubber.

On the other hand, the sodium bentonite is a sodium-based waterproofing material among bentonite, and good quality sodium bentonite expands about 15 to 20 times its original volume when reacting with water, and absorbs water up to 5 times its weight. It is often used as a sealant, waterproofing material, and waterproofing material.

In particular, when sodium bentonite is less than 1 part by weight compared to 100 parts by weight of rubber, volume expansion is made less, and when it is more than 1. 3 parts by weight, there is a problem of rapid expansion.

Therefore, the sodium bentonite is preferably mixed by adding 1 to 1.3 parts by weight to 100 parts by weight of rubber.

The water-stop material combined expansion joint according to the present invention consisting of the above-described configuration is a water-stop product made of special modified rubber as the main raw material. It exhibits a double-acting water-stop effect with superior water-stop performance and simple construction than conventional water-stop plates, and by the elasticity of the rubber. It is a member that can have an exponential effect due to the sealing action between the new construction or construction joint), can control the maximum movement of the concrete structure 10, and can be waterproof by 10%.

In particular, it is very effective where excessive movement and extreme distortion of the concrete structure 10 occur.

In addition, the expansion joint for both water-stop materials according to the present invention has an activity range of 60% compression, 30% tension, and 120% shear stress, and can physically control movements exceeding the original design (theoretical expansion and contraction amount of concrete structures). It is an absence that can be.

In addition, the expansion joint for both waterstop material according to the present invention is sealed up to about 6.0kgf/cm2 to 10.0kgf/cm2 by contacting the water flowing into the expansion or construction joint of the concrete structure 10 and expanding by 2 to 10 times. By maintaining the pressure, the empty voids and waterways of the expansion joint (G) are completely sealed, so that the perfect water-stop performance can be exhibited.

Hereinafter, a description will be given of the manufacture of an elastic index material combined with an index material according to the present invention having the configuration as described above.

The method for manufacturing an elastic water-retaining material for both water-stop materials according to the present invention includes 100 parts by weight of rubber, one of natural rubber and synthetic rubber, in a ni-da mixer or a banbar re-mixer machine, which is a closed mixing/stirring machine, and stearic acid (a vulcanization aid). 1 part by weight), magnesium oxide (2.5 parts by weight), zinc oxide (2.5 parts by weight), sulfur (1.5%), mix and stir so that they are evenly mixed, and then petroleum resin (5 parts by weight) as a tackifier, and Couma Calcium carbonate as a filler after adding lone inden resin (2 parts by weight), polybutene (10 parts by weight), and polyisobutylene (3 parts by weight) and mixing and stirring so that the resin component is completely dispersed and mixed. (15 parts by weight), sodium carboxymethylcellulose (17.5 parts by weight), sodium polyacrylate (17.5 parts by weight), and sodium bentonite (1 to 1.3 parts by weight), which are water-expansion agents, are added together and stirred, while the process oil (5 parts by weight) is a softener. Part) is added and the mixture is stirred and mixed so that it is evenly dispersed. After cooling and cooling, a vulcanizing agent is added and stirred so that it is evenly dispersed again on a roller, and the mixture is homogeneously dispersed and mixed.

The unvulcanized rubber dough mixed and stirred as described above is re-stirred in an extruder while extruding to a certain standard and then semi-vulcanized at an average temperature of 160°C in a continuous vulcanizing machine that directly vulcanizes the extruded product.

Hereinafter, the construction of the concrete structure construction joint using the water-stop material combined expansion joint according to the present invention having the configuration as described above will be described.

Figures 16a to 16e is a process diagram 4 showing the construction state of the water-stop material combined expansion joint according to the present invention.

As shown in these drawings, the concrete structure construction joint construction method using a water-stop material combined expansion joint according to the present invention forms a cutting groove 12 by cutting a predetermined position of the concrete structure 10 using a cutting machine. The step (S 1); Forming a perforated hole 14 by drilling at both ends of the cutting groove 12 with a predetermined depth and width (S 2 ); Inserting a backup agent 16 at the bottom of the cutting groove 12 (S 3); Inserting the anchor bolt 18 into the perforated hole 14, but installing the anchor bolt 18 so that the top end of the anchor bolt 18 is located in the ground (S 4); Applying the adhesive 20 to the cutting groove 12 and the perforated hole 14 (S 5); Installing an expansion joint (J) for both waterstop and contraction according to claim 1 in the upper portion of the backup agent (16) and the cutting groove (12) (S6); Filling the concrete reinforcement agent 22 around the water-stop material combined expansion joint (J) (S 7); Installing a support rubber plate 24 over the concrete reinforcing agent 22 and the anchor bolt 18 and the elastic joint (J) for both waterstop material (S 8); Installing a support iron plate 26 having a predetermined shape on the support rubber plate 24 (S 9); It consists of a step (S10) of fixing the anchor bolt 18 inserted into the perforated hole 14 through the support plate 26 with a nut 28 on the support rubber plate 24.

That is, the concrete structure construction joint construction method using a water-stop material combined expansion joint according to the present invention comprises: a cutting groove 12 forming step (S 1); Hole 14 forming step (S 2); Backup agent 16 inserting step (S 3); Anchor bolt 18 insertion step (S 4); Adhesive 20 applying step (S 5); Water-stop material combined expansion joint (J) installation step (S 6); Concrete reinforcing agent 22 filling step (S 7); Support rubber plate 24 installation step (S 8); Support iron plate 26 installation step (S 9); The anchor bolt 18 is to install the expansion joint (J) for both waterstop material by sequentially performing the fixing step (S 10).

Here, in the step of forming the cutting groove 12 (S1), the new construction or construction joint of the target concrete structure 10 is cut using a cutting machine to form the cutting groove 12 in multiple stages for each of the lower, middle, and upper ends. .

In particular, the cutting machine is a power tool that uses electric power, and is a tool capable of cutting the surface of the concrete structure 10 expansion or construction joint in a certain shape by adjusting the cutting edge of the cutting machine.

The size of the cutting groove 12 for cutting the surface of the concrete structure 10 at a predetermined interval and depth is formed to be about 25±5% smaller than the volume of the expansion joint J installed therein.

Meanwhile, the inside of the cutting groove 12 of the concrete structure 10 cut with the cutting machine is removed by using a high pressure cleaner (150±50kg/m2) to remove foreign matter remaining on the surface of the concrete structure 10.

At this time, if water cannot be used, clean it with a brush brush, compressed air, and a vacuum aspirator.

In addition, the part of the concrete structure 10 that is soiled by oil or fat is cleaned using a solvent or a dedicated detergent.

Subsequently, in the step of forming the perforated hole 14 (S 2 ), a perforated hole 14 through which the anchor bolt 18 can be inserted is formed by drilling at both ends of the cutting groove 12 with a predetermined depth and width.

Subsequently, the insertion step (S3) of the backup agent 16 is a polyurethane foam or a member having a performance equivalent thereto, and a backup agent 16 having a specific gravity of 0.001 to 0.1 or more is added to the expansion joint (G). Insert in.

Subsequently, the anchor bolt 18 inserting step (S4) inserts the anchor bolt 18 into the perforated hole 14.

Subsequently, in the step of applying the adhesive 20 (S5), an epoxy-based wet adhesive 20 is used on the contact surface of the concrete structure 10 including the cutting groove 12 and the perforated hole 14, and the adhesive 20 ) Is a two-component material of the main and hardener, and after mixing at the correct mixing ratio (subject 2: hardener 1), it is applied to the surface of the concrete structure 10 and the expansion joint (J) for both water-stop materials.

Subsequently, the installation step (S6) of the water-stop material combined expansion joint (J) includes the upper part of the backup agent 16 and the cutting groove 12 with different sizes of the lower, middle, and upper water-stop material combined expansion joint (J). Install.;

Subsequently, in the step of filling the concrete reinforcement 22 (S7), the concrete reinforcement 22 is filled in the lower and side surfaces of the expansion joint J for both water-stop materials.

Here, the concrete reinforcement 22 is filled with a concrete reinforcement 22 composed of silicate in the deteriorated portion of the high-pressure-washed concrete structure 10.

In particular, the silicate is a generic term for a neutral salt in which hydrogen of various silicic acids is substituted with a metal atom, and is a compound containing an anion in which one or more silicon center atoms are surrounded by a negatively charged ligand.

The concrete strengthening agent 22 is used by adding 25% by weight of water to 75% by weight of silicate.

Subsequently, in the installation step (S8) of the support rubber plate 24, the support rubber plate 24 is installed over the concrete reinforcement 22, the anchor bolt 18, and the expansion joint J for both waterstop material.

Subsequently, in the step of installing the support iron plate 26 (S9), the support iron plate 26 having a predetermined shape is installed on the support rubber plate 24 in the same line with the ground.

Subsequently, in the fixing step (S 10) of the anchor bolt 18, the anchor bolt 18 inserted into the perforated hole 14 through the support plate 26 is fixed with a nut 28 on the support rubber plate 24.

The concrete structure construction joint construction method using the expansion joint for both waterstop material according to the present invention consisting of the steps as described above is a water-stop product made of special modified rubber as the main material, and has a dual-operation index effect with superior water-stop performance and simple construction than conventional water-stop plates. It can have a water-stop effect by sealing action between expansion or construction joints by the rubber elasticity of the expansion joint (J) for both water-stop material and control the maximum movement of the concrete structure (10). % Waterproof, very effective in places where excessive movement and extreme warping of the concrete structure (10) occur, and has an activity range of 60% compression, 30% tensile, and 120% shear stress, and is physically original design It is possible to control the movement exceeding (theoretical expansion and contraction amount of concrete structure), and the expansion of the concrete structure 10 or expansion of the concrete structure 10 or expansion of the concrete structure 10 by contact with water flowed into the joint and expanding up to 2 to 10 times, up to 6.0kgf/㎠ to 10.0kgf By maintaining the sealing pressure of about /㎠, empty voids and water paths of expansion or construction joints are completely sealed, so that perfect water-stop performance can be exhibited.

[Example 5]

Figure 17 is a plan view 5 showing the installation state of the water-stop material combined expansion joint according to the present invention, Figure 18 is a detailed view showing an enlarged portion "A" of Figure 17, Figure 19 is a water-stop material combined expansion joint according to the present invention It is a cross-sectional view 5 showing the installation state.

As shown in these figures, the water-stop material combined expansion joint according to the present invention is one of natural rubber or synthetic rubber 100 parts by weight of rubber; 1 part by weight of stearic acid; 2.5 parts by weight of magnesium oxide; 2.5 parts by weight of zinc oxide; 1 to 1.3 parts by weight of sulfur; 5 parts by weight of Petroleum Resin; 2 parts by weight of Kumaron Resin; 10 parts by weight of polybutene; 3 parts by weight of polyisobutylene; 5 parts by weight of process oil; 15 parts by weight of calcium carbonate; 5 parts by weight of Diatomaceous Earth; Sodium Carboxymethyl Cellulose 17.5 parts by weight; 17.5 parts by weight of sodium polyacrylate; It consists of 1 to 1.3 parts by weight of sodium bentonite.

That is, the elasticity index material is rubber, stearic acid, magnesium oxide, zinc oxide, sulfur, petroleum resin, coumarone indene resin, polybutene, polyisobutylene, process oil, calcium carbonate, diatomaceous earth, sodium carboxy methylcellulose , Sodium polyacrylate and sodium bentonite.

Here, since the rubber has unique properties for each type, synthesis of natural rubber, SBR rubber, IR rubber, BR rubber, EPT rubber, IIR rubber, CR rubber, NBR rubber, urethane rubber, etc. Rubber may be used alone, or natural rubber and synthetic rubber may be used in combination.

In addition, the stearic acid is white at room temperature, has a thin leaf-shaped crystal, has a melting point of about 71°C, is not soluble in water, is well soluble in organic solvents, and is a kind of saturated fatty acid that exists in a solid state at room temperature. It is preferable to add and mix 1 part by weight based on 100 parts by weight of rubber.

In addition, the magnesium oxide is also referred to as goto, and industrially, it is also referred to as magnesia.

Chemical formula MgO. Although it is a white amorphous powder, equiaxed crystals precipitate from a solution dissolved with borate.

It has a molecular weight of 40.32, a melting point of 2,800°C, a boiling point of 3,600°C, and a specific gravity of 3.2 to 3.7.

It is slightly soluble in water and is alkaline, but is easily soluble in acid and ammonia water.

It absorbs water and carbon dioxide in the air and gradually becomes magnesium hydroxycarbonate.

It is formed by heating metallic magnesium in the air or by thermally decomposing magnesium carbonate.

It is preferable to add and mix 2.5 parts by weight of the magnesium oxide based on 100 parts by weight of the rubber.

In addition, the zinc oxide is a colorless crystal ZnO that is insoluble in water. The powder is called zinc oxide, zinc white, etc.

It is a light white powder with a melting point of 1,975°C (pressurized) and 1,720°C (normal pressure), and specific gravity of 5.47 (amorphous) and 5.78 (crystalline).

It turns yellow when heated to about 300℃, but becomes its original color when cooled.

It is an amphoteric oxide that is hardly soluble in water, but soluble in dilute acids and concentrated alkalis.

Naturally, it is produced as red zinc, and industrially, it is made by heating and vaporizing metallic zinc and burning it with air or burning zinc sulfate or zinc nitrate.

It is important as a white pigment because the particles are fine and the covering power is lower than that of light white, but it is not toxic and does not turn black by hydrogen sulfide.

In addition, it is preferable to add and mix 2.5 parts by weight of the zinc oxide based on 100 parts by weight of the rubber.

In addition, the sulfur has a melting point of 120° C. and a specific gravity of 1.92.

At room temperature, it is a yellow, odorless, crisp crystal. At high temperature, it combines with almost all metals or hydrogen except gold and platinum to form sulfides.

It is preferable that the sulfur is added and mixed in an amount of 1 to 1.3 parts by weight based on 100 parts by weight of rubber.

In addition, the petroleum resin is a light yellow or dark brown thermoplastic resin having a molecular weight of 2000 or less obtained by polymerization with an acidic catalyst using higher unsaturated hydrocarbons in high-temperature pyrolysis oil such as naphtha as a raw material. There are two types: olefinic and aromatic.

In general, the aromatic series produced is a lost flake or lump-shaped solid with a softening point of 70~140℃ and a specific gravity of 1.00~1.10, and it is soluble in organic solvents excluding alcohol.

It is mixed with alkyd resin, chromaon indene resin, phenolic resin, rodin, natural rubber, and synthetic rubber.

It is preferable to add and mix 5 parts by weight of the petroleum resin based on 100 parts by weight of rubber.

In addition, the coumarone indene resin is polymerized by heat or catalyst after purifying the distillate of tar at 160 to 180°C.

Sulfuric acid is mainly used as a catalyst, and other Friedel-Crafts type catalysts, inorganic acids, organic acids, and metal halides of any kind are also used.

The color tone, transparency, hardness, softening point, and solubility are different depending on the purity of the raw material and the polymerization method.

In general, it is light brown to black, and the softening point is 50 to 160°C. It is soluble by many organic solvents, especially aromatic hydrocarbons.

It is chemically neutral and has high acid and alkali resistance.

It is preferable to add and mix 2 parts by weight of the coumarone inden resin based on 100 parts by weight of the rubber.

In addition, the polybutene is soluble in benzene, chloroform, gasoline, petroleum ether, and is not soluble in water, alcohol, or acetone.

It is a synthetic resin that is stable to heat or sunlight and has a lower viscosity than polyisobutylene.

It has excellent water resistance, moisture resistance, and gas impermeability. When mixed with vinyl acetate resin, it increases water resistance and prevents softening due to saliva mixing.

It is used alone or in combination with polyisobutylene, and polyisobutylene is used when high viscosity is required.

It is preferable to add and mix 10 parts by weight of the polybutene based on 100 parts by weight of the rubber.

In addition, the polyisobutylene is a generic term for an isobutylene ((CH)C=CH) polymer, and is also referred to as polyisobutene.

Polymerization with a cation catalyst such as trifluoroboric acid at a low temperature near -100°C can yield a high polymer having a molecular weight of 100,000 or more.

High molecular weight polyisobutylene: It has a polymerization degree of 1,000 or more and is a rubber-like solid, but it is chemically stable because it does not have unsaturated bonds in the polymer.

Here, it is preferable to add 3 parts by weight of the polyisobutylene to 100 parts by weight of the rubber.

In addition, the process oil is a kind of softener that facilitates processing of synthetic rubber, and improves physical properties to some extent.

Only oils mixed with synthetic rubber by mixing rollers, extruders, Bumbury mixers, etc. are referred to as such.

By lubricating the rubber molecules, the movement of the molecules is free, and internal friction is reduced to reduce heat generation during mixing.

In addition, it helps to disperse the filler, improves workability, improves elasticity and refraction of the vulcanized rubber, improves tensile strength and abrasion resistance, and helps to lower the price.

In the styrene-butadiene-based synthetic rubber, petroleum distillates and aromatic hydrocarbons having a high boiling point are used, and if the blending amount of carbon black is large, the amount of process oil added increases, such as rubber powder 100, carbon black 60, and aromatic process oil 20. A compatible petroleum distillate is used for the chloroprene-based synthetic rubber, and stearic acid is added to the nitrile-based synthetic rubber.

Here, it is preferable to add and mix 5 parts by weight of the process oil based on 100 parts by weight of the rubber.

And, the calcium carbonate is the formula CaCO3. Among the salts that exist in nature, it is the most common.

There are various forms, and exist as marble, calico, berth, limestone, chalk, ice tin, clam shell, egg shell, coral, etc. It is generally colorless crystals or white solid, has a specific gravity of 2.93, and decomposes at 825 ℃.

When heated, carbon dioxide is produced and quicklime is obtained.

This reaction is an important reaction for industrially obtaining carbon dioxide and quicklime.

CaCO3 → CaO+CO2↑ It does not dissolve in pure water, but dissolves in water containing carbon dioxide, producing calcium hydrogen carbonate and dissolving. CaCO3+CO2+H2O ↔ Ca(HCO3)2 In addition, carbon dioxide is generated when an acid acts on calcium carbonate.

CaCO3+2HCl → CaCl2+H2O+CO2↑ When water containing carbon dioxide meets limestone in the ground, it dissolves and creates a cavity. This is a limestone cave, and the dissolved water is decomposed by geothermal heat, and calcium carbonate precipitates.

When this precipitation occurs in a limestone cave, it produces stalactites or stalagmites.

To obtain calcium carbonate in the laboratory, alkali carbonate is applied to a water-soluble calcium salt, or carbon dioxide is passed through lime water.

Industrially, it is obtained by crushing limestone to make powder, sieving it, or peeling (an operation that divides the particles according to their size or specific gravity using the difference in speed when solid particles freely settle in the air). This is called heavy calcium carbonate.

In addition, the precipitate produced by blowing carbon dioxide into lime oil is filtered, dried, and finely pulverized.

This is called hard calcium carbonate.

Also, the wet pulverization of shells is called whiting.

Calcium carbonate is widely used in industrial fields due to its low cost and low specific gravity.

That is, as limestone and marble, it is used as a main raw material for cement, as a raw material for calcium oxide, and as various neutralizing agents for iron making and building materials.

In addition, ash is used for white pigments and water-based paints, and precipitated calcium carbonate is used for pigments, paints, toothpaste, etc., and is also compounded in rubber as a reinforcing agent.

It is preferable to add and mix 15 parts by weight of the calcium carbonate based on 100 parts by weight of the rubber.

In addition, the diatomaceous earth is mainly made of silicic acid (SiO2), and has a white or grayish white color.

It is light and soft enough to smear powder when you touch it with your fingers.

Because it is microporous, it has strong water absorption.

Here, it is preferable to add and mix 5 parts by weight of the diatomaceous earth based on 100 parts by weight of rubber.

In addition, the sodium carboxy methyl cellulose is made into alkaline cellulose by putting sulfite pulp in an aqueous sodium hydroxide solution, dissolved in sodium chloroacetate, and precipitated in methyl alcohol.

It is usually obtained as a hygroscopic white solid sodium salt, and its properties differ depending on the degree of substitution of the carboxymethyl group.

When the degree of substitution is 0.3 or higher, it is dissolved in an aqueous alkali solution and precipitated as an acid.

At a degree of substitution of 0.4 or more, it swells and dissolves in water.

The viscosity of an aqueous solution depends on the pH and degree of polymerization.

Those with a degree of substitution of 0.5 to 0.8 do not precipitate even in acidity, but precipitate from alcohol.

Various salts are made from a polymer electrolyte.

Here, it is preferable to add 17.5 parts by weight of the sodium carboxy methyl cellulose to 100 parts by weight of the rubber.

In addition, the sodium polyacrylate is used as a thickener. It is widely used as a stabilizer, a cohesive clarifying agent, an emulsifying and dispersing agent, and a tissue improving agent.

It is a white powder, odorless, and when water is added, it expands and becomes a viscous liquid through a transparent gel. It becomes a salt with a divalent or higher metal, causing crosslinking between molecules and gelation.

Here, it is preferable to add 17.5 parts by weight of the sodium polyacrylate to 100 parts by weight of the rubber.

On the other hand, the sodium bentonite is a sodium-based waterproofing material among bentonite, and good quality sodium bentonite expands about 15 to 20 times its original volume when reacting with water, and absorbs water up to 5 times its weight. It is often used as a sealant, waterproofing material, and waterproofing material.

In particular, when sodium bentonite is less than 1 part by weight compared to 100 parts by weight of rubber, volume expansion is made less, and when it is more than 1. 3 parts by weight, there is a problem of rapid expansion.

Therefore, the sodium bentonite is preferably mixed by adding 1 to 1.3 parts by weight to 100 parts by weight of rubber.

The water-stop material combined expansion joint according to the present invention consisting of the above-described configuration is a water-stop product made of special modified rubber as the main raw material. It exhibits a double-acting water-stop effect with superior water-stop performance and simple construction than conventional water-stop plates, and by the elasticity of the rubber. It is a member that can have an exponential effect due to the sealing action between the new construction or construction joint), can control the maximum movement of the concrete structure 10, and can be waterproof by 10%.

In particular, it is very effective where excessive movement and extreme distortion of the concrete structure 10 occur.

In addition, the expansion joint for both water-stop materials according to the present invention has an activity range of 60% compression, 30% tension, and 120% shear stress, and can physically control movements exceeding the original design (theoretical expansion and contraction amount of concrete structures). It is an absence that can be.

In addition, the expansion joint for both waterstop material according to the present invention is sealed up to about 6.0kgf/cm2 to 10.0kgf/cm2 by contacting the water flowing into the expansion or construction joint of the concrete structure 10 and expanding by 2 to 10 times. By maintaining the pressure, the empty voids and waterways of the expansion joint (G) are completely sealed, so that the perfect water-stop performance can be exhibited.

Hereinafter, a description will be given of the manufacture of an elastic index material combined with an index material according to the present invention having the configuration as described above.

The method for manufacturing an elastic water-retaining material for both water-stop materials according to the present invention includes 100 parts by weight of rubber, one of natural rubber and synthetic rubber, in a ni-da mixer or a banbar re-mixer machine, which is a closed mixing/stirring machine, and stearic acid (a vulcanization aid). 1 part by weight), magnesium oxide (2.5 parts by weight), zinc oxide (2.5 parts by weight), sulfur (1.5%), mix and stir so that they are evenly mixed, and then petroleum resin (5 parts by weight) as a tackifier, and Couma Calcium carbonate as a filler after adding lone inden resin (2 parts by weight), polybutene (10 parts by weight), and polyisobutylene (3 parts by weight) and mixing and stirring so that the resin component is completely dispersed and mixed. (15 parts by weight), sodium carboxymethylcellulose (17.5 parts by weight), sodium polyacrylate (17.5 parts by weight), and sodium bentonite (1 to 1.3 parts by weight), which are water-expansion agents, are added together and stirred, while the process oil (5 parts by weight) is a softener. Part) is added and the mixture is stirred and mixed so that it is evenly dispersed. After cooling and cooling, a vulcanizing agent is added and stirred so that it is evenly dispersed again on a roller, and the mixture is homogeneously dispersed and mixed.

The unvulcanized rubber dough mixed and stirred as described above is re-stirred in an extruder while extruding to a certain standard and then semi-vulcanized at an average temperature of 160°C in a continuous vulcanizing machine that directly vulcanizes the extruded product.

Hereinafter, the construction of the concrete structure construction joint using the water-stop material combined expansion joint according to the present invention having the configuration as described above will be described.

Figures 20a to 20e is a process diagram 5 showing the construction state of the water-stop material combined expansion joint according to the present invention.

As shown in these drawings, the concrete structure construction joint construction method using a water-stop material combined expansion joint according to the present invention forms a cutting groove 12 by cutting a predetermined position of the concrete structure 10 using a cutting machine. The step (S 1); Forming a perforated hole 14 by drilling at both ends of the cutting groove 12 with a predetermined depth and width (S 2 ); Inserting a backup agent 16 at the bottom of the cutting groove 12 (S 3); Inserting the anchor bolt 18 into the perforated hole 14, but installing the anchor bolt 18 so that the top end of the anchor bolt 18 is located in the ground (S 4); Applying the adhesive 20 to the cutting groove 12 and the perforated hole 14 (S 5); Installing an expansion joint (J) for both waterstop and contraction according to claim 1 in the upper portion of the backup agent (16) and the cutting groove (12) (S6); Filling the concrete reinforcement agent 22 around the water-stop material combined expansion joint (J) (S 7); Installing a support rubber plate 24 over the concrete reinforcing agent 22 and the anchor bolt 18 and the elastic joint (J) for both waterstop material (S 8); Installing a support iron plate 26 having a predetermined shape on the support rubber plate 24 (S 9); It consists of a step (S10) of fixing the anchor bolt 18 inserted into the perforated hole 14 through the support plate 26 with a nut 28 on the support rubber plate 24.

That is, the concrete structure construction joint construction method using a water-stop material combined expansion joint according to the present invention comprises: a cutting groove 12 forming step (S 1); Hole 14 forming step (S 2); Backup agent 16 inserting step (S 3); Anchor bolt 18 insertion step (S 4); Adhesive 20 applying step (S 5); Water-stop material combined expansion joint (J) installation step (S 6); Concrete reinforcing agent 22 filling step (S 7); Support rubber plate 24 installation step (S 8); Support iron plate 26 installation step (S 9); The anchor bolt 18 is to install the expansion joint (J) for both waterstop material by sequentially performing the fixing step (S 10).

Here, in the step of forming the cutting groove 12 (S1), the new construction or construction joint of the target concrete structure 10 is cut using a cutting machine to form the cutting groove 12 in multiple stages for each of the lower, middle, and upper ends. .

In particular, the cutting machine is a power tool that uses electric power, and is a tool capable of cutting the surface of the concrete structure 10 expansion or construction joint in a certain shape by adjusting the cutting edge of the cutting machine.

The size of the cutting groove 12 for cutting the surface of the concrete structure 10 at a predetermined interval and depth is formed to be about 25±5% smaller than the volume of the expansion joint J installed therein.

Meanwhile, the inside of the cutting groove 12 of the concrete structure 10 cut with the cutting machine is removed by using a high pressure cleaner (150±50kg/m2) to remove foreign matter remaining on the surface of the concrete structure 10.

At this time, if water cannot be used, clean it with a brush brush, compressed air, and a vacuum aspirator.

In addition, the part of the concrete structure 10 that is soiled by oil or fat is cleaned using a solvent or a dedicated detergent.

Subsequently, in the step of forming the perforated hole 14 (S 2 ), a perforated hole 14 through which the anchor bolt 18 can be inserted is formed by drilling at both ends of the cutting groove 12 with a predetermined depth and width.

Subsequently, the insertion step (S3) of the backup agent 16 is a polyurethane foam or a member having a performance equivalent thereto, and a backup agent 16 having a specific gravity of 0.001 to 0.1 or more is added to the expansion joint (G). Insert in.

Subsequently, the anchor bolt 18 inserting step (S4) inserts the anchor bolt 18 into the perforated hole 14.

Subsequently, in the step of applying the adhesive 20 (S5), an epoxy-based wet adhesive 20 is used on the contact surface of the concrete structure 10 including the cutting groove 12 and the perforated hole 14, and the adhesive 20 ) Is a two-component material of the main and hardener, and after mixing at the correct mixing ratio (subject 2: hardener 1), it is applied to the surface of the concrete structure 10 and the expansion joint (J) for both water-stop materials.

Subsequently, the installation step (S6) of the water-stop material combined expansion joint (J) includes the upper part of the backup agent 16 and the cutting groove 12 with different sizes of the lower, middle, and upper water-stop material combined expansion joint (J). Install.;

Subsequently, in the step of filling the concrete reinforcement 22 (S7), the concrete reinforcement 22 is filled in the lower and side surfaces of the expansion joint J for both water-stop materials.

Here, the concrete reinforcement 22 is filled with a concrete reinforcement 22 composed of silicate in the deteriorated portion of the high-pressure-washed concrete structure 10.

In particular, the silicate is a generic term for a neutral salt in which hydrogen of various silicic acids is substituted with a metal atom, and is a compound containing an anion in which one or more silicon center atoms are surrounded by a negatively charged ligand.

The concrete strengthening agent 22 is used by adding 25% by weight of water to 75% by weight of silicate.

Subsequently, in the installation step (S8) of the support rubber plate 24, the support rubber plate 24 is installed over the concrete reinforcement 22, the anchor bolt 18, and the expansion joint J for both waterstop material.

Subsequently, in the step of installing the support iron plate 26 (S9), the support iron plate 26 having a predetermined shape is installed on the support rubber plate 24 in the same line with the ground.

Subsequently, in the fixing step (S10) of the anchor bolt 18, the anchor bolt 18 inserted into the perforated hole 14 through the support plate 26 is fixed with a nut 28 on the support rubber plate 24.

The concrete structure construction joint construction method using the expansion joint for both waterstop material according to the present invention consisting of the steps as described above is a water-stop product made of special modified rubber as the main material, and has a dual-operation index effect with superior water-stop performance and simple construction than conventional water-stop plates. It can have a water-stop effect by sealing action between expansion or construction joints by the rubber elasticity of the expansion joint (J) for both water-stop material and control the maximum movement of the concrete structure (10). % Waterproof, very effective in places where excessive movement and extreme warping of the concrete structure (10) occur, and has an activity range of 60% compression, 30% tensile, and 120% shear stress, and is physically original design It is possible to control the movement exceeding (theoretical expansion and contraction amount of concrete structure), and the expansion of the concrete structure 10 or expansion of the concrete structure 10 or expansion of the concrete structure 10 by contact with water flowed into the joint and expanding up to 2 to 10 times, up to 6.0kgf/㎠ to 10.0kgf By maintaining the sealing pressure of about /㎠, empty voids and water paths of expansion or construction joints are completely sealed, so that perfect water-stop performance can be exhibited.

The preferred embodiments described in the specification of the present invention are illustrative and not limiting, and the scope of the present invention is indicated by the appended claims, and all modifications falling within the meaning of the claims are included in the present invention. It becomes.

10: concrete structure 12: cutting groove
14: perforated hole 16: backup agent
18: anchor bolt 20: adhesive
22: concrete reinforcement 24: support rubber plate
26: support plate 28: nut
30: sealant G: expansion joint
J: Extension joint material for both water-stop materials

Claims (6)

delete delete Cutting a predetermined position of the concrete structure 10 using a cutting machine to form a cutting groove 12 (S 1);
Forming a perforated hole 14 by drilling at both ends of the cutting groove 12 with a predetermined depth and width (S 2 );
Inserting a backup agent 16 at the bottom of the cutting groove 12 (S 3);
Inserting the anchor bolt 18 into the perforated hole 14 (S 4);
Applying the adhesive 20 to the cutting groove 12 and the perforated hole 14 (S 5);
100 parts by weight of rubber which is one of natural rubber or synthetic rubber in the upper part of the backup agent 16 and the cutting groove 12; 1 part by weight of stearic acid; 2.5 parts by weight of magnesium oxide; 2.5 parts by weight of zinc oxide; 1 to 1.3 parts by weight of sulfur; 5 parts by weight of Petroleum Resin; 2 parts by weight of Kumaron Resin; 10 parts by weight of polybutene; 3 parts by weight of polyisobutylene; 5 parts by weight of process oil; 15 parts by weight of calcium carbonate; 5 parts by weight of Diatomaceous Earth; Sodium Carboxymethyl Cellulose 17.5 parts by weight; 17.5 parts by weight of sodium polyacrylate; Installing a water-stop material combined expansion joint (J) consisting of 1 to 1.3 parts by weight of sodium bentonite (S 6);
Filling the concrete reinforcement agent 22 around the water-stop material combined expansion joint (J) (S 7);
Installing the support rubber plate 24 so as to protrude from the ground over the concrete reinforcing agent 22 and the anchor bolt 18 and the water-stop material combined expansion joint (J) (S 8);
Installing a support iron plate 26 on the support rubber plate 24 (S 9);
Concrete structure construction joint construction method using a water-stop material combined expansion joint, characterized in that consisting of the step (S 10) of fixing the support iron plate (26) to the anchor bolt (18) with a nut. delete Cutting a predetermined position of the concrete structure 10 using a cutting machine to form a cutting groove 12 (S 1);
Forming a perforated hole 14 by drilling at both ends of the cutting groove 12 with a predetermined depth and width (S 2 );
Inserting a backup agent 16 at the bottom of the cutting groove 12 (S 3);
Inserting the anchor bolt 18 into the perforated hole 14 (S 4);
Applying the adhesive 20 to the cutting groove 12 and the perforated hole 14 (S 5);
100 parts by weight of rubber which is one of natural rubber or synthetic rubber in the upper part of the backup agent 16 and the cutting groove 12; 1 part by weight of stearic acid; 2.5 parts by weight of magnesium oxide; 2.5 parts by weight of zinc oxide; 1 to 1.3 parts by weight of sulfur; 5 parts by weight of Petroleum Resin; 2 parts by weight of Kumaron Resin; 10 parts by weight of polybutene; 3 parts by weight of polyisobutylene; 5 parts by weight of process oil; 15 parts by weight of calcium carbonate; 5 parts by weight of Diatomaceous Earth; Sodium Carboxymethyl Cellulose 17.5 parts by weight; 17.5 parts by weight of sodium polyacrylate; Installing a water-stop material combined expansion joint (J) consisting of 1 to 1.3 parts by weight of sodium bentonite (S 6);
Filling the concrete reinforcement agent 22 around the water-stop material combined expansion joint (J) (S 7);
Installing a support rubber plate 24 over the concrete reinforcing agent 22 and the anchor bolt 18 and the elastic joint (J) for both waterstop material (S 8);
Installing a support iron plate 26 having a predetermined shape on the support rubber plate 24 (S 9);
Fixing the anchor bolt 18 inserted into the perforated hole 14 through the support plate 26 with a nut on the support rubber plate 24 (S 10);
Construction of a concrete structure using an extension joint material for both waterstop material, characterized in that consisting of the step of installing a backup agent 16 between the support steel plates 26 and filling the sealant 30 on the backup agent 16 How to construct the vagina. Cutting a predetermined position of the concrete structure 10 using a cutting machine to form a cutting groove 12 (S 1);
Forming a perforated hole 14 by perforating both ends of the cutting groove 12 to a predetermined depth and width (S 2 );
Inserting a backup agent 16 at the bottom of the cutting groove 12 (S 3);
Inserting the anchor bolt 18 into the perforated hole 14, but installing the anchor bolt 18 so that the top end of the anchor bolt 18 is located in the ground (S 4);
Applying the adhesive 20 to the cutting groove 12 and the perforated hole 14 (S 5);
100 parts by weight of rubber which is one of natural rubber or synthetic rubber in the upper part of the backup agent 16 and the cutting groove 12; 1 part by weight of stearic acid; 2.5 parts by weight of magnesium oxide; 2.5 parts by weight of zinc oxide; 1 to 1.3 parts by weight of sulfur; 5 parts by weight of Petroleum Resin; 2 parts by weight of Kumaron Resin; 10 parts by weight of polybutene; 3 parts by weight of polyisobutylene; 5 parts by weight of process oil; 15 parts by weight of calcium carbonate; 5 parts by weight of Diatomaceous Earth; Sodium Carboxymethyl Cellulose 17.5 parts by weight; 17.5 parts by weight of sodium polyacrylate; Installing a water-stop material combined expansion joint (J) consisting of 1 to 1.3 parts by weight of sodium bentonite (S 6);
Filling the concrete reinforcement agent 22 around the water-stop material combined expansion joint (J) (S 7);
Installing a support rubber plate 24 over the concrete reinforcing agent 22 and the anchor bolt 18 and the elastic joint (J) for both waterstop material (S 8);
Installing a support iron plate 26 having a predetermined shape on the support rubber plate 24 (S 9);
Using a water-stop material combined expansion joint, characterized in that consisting of the step (S 10) of fixing the anchor bolt 18 inserted into the perforated hole 14 through the support plate 26 with a nut on the support rubber plate 24 Concrete structure construction joint construction method.

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