KR20050098370A - Mending stuff and manufacturing method of mending stuff and construction method for using the mending stuff - Google Patents

Abstract

The present invention, after the completion of the concrete structure, in order to minimize damage to the concrete of the structure by repairing and supplementing the flooded and leaked parts in case of inundation and leakage due to the occurrence of cracks (cracks) in the finished concrete structure, The present invention relates to a repairing material, a manufacturing method of the repairing material, and a construction method using the repairing material. The water-expandable water-retaining material of the rubber main body of the present invention is immersed in the rubber (rubber) by adding a tackifier such as petroleum resin, polybutene, and has the same adhesive properties as the adhesive, and the addition of polyacrylate and CMC, which are compatible with water, And it is to provide a method for producing a repair material excellent in adhesion even with concrete that is wet with water leaking.

Description

Method of manufacturing repairing materials and repairing materials and construction method using the same {MENDING STUFF AND MANUFACTURING METHOD OF MENDING STUFF AND CONSTRUCTION METHOD FOR USING THE MENDING STUFF}

After the completion of the concrete structure, the present invention repairs and supplements to minimize the damage to the concrete of the structure by repairing and supplementing the flooded and leaked parts in case of inundation and leakage due to the occurrence of crack (cracks) in the finished concrete structure And a method of manufacturing a repairing material and a construction method using the same.

In more detail, after the concrete structure is completed and completed, if the finished concrete structure is leaked or submerged in the inner wall due to floating settlement or crack generation, or due to waterproofing defects, durability degradation and shortening of life due to damage to the structure are reduced. It is a big problem to see the enormous damage, and in order for the finished structure to exhibit good performance, it is urgently needed to repair and prevent the leakage of water from the concrete interior wall.

More specifically, the concrete that is constructed by waterproofing the exterior surface of concrete to prevent damage to the groundwater, while constructing concrete structures such as an open tunnel, underground structures of buildings, underground roads, subways, etc. External waterproof construction is performed to prevent leakage and flooding. When the above-mentioned concrete structure is being constructed or completed after the construction, the concrete structure constructed by the floating submersion, etc. due to the floating and waterproof construction is a defect occurs, leaking or submerged into the internal wall of the concrete structure, the water is washed out of the completed structure It is inconvenient to use and the durability life is shortened due to the damage of the structure, so that repair work is performed to block the leakage of water flowing into the concrete structure.

As a countermeasure for this, conventionally, an epoxy injection repair method, a polyurethane injection repair method, a cement milk grouting injection method have been mainly used to repair a flooded or leaked part.

The epoxy injection repair method is an industrial syringe installed by fixing an anchor in a crack that is leaking due to cracks and cracks of concrete structures. The two-component low viscosity epoxy is injected into the gap to seal the gap between the gaps. It is a method to repair by blocking the waterway. Epoxy injection repairing method is low viscosity type, and it is easy to inject epoxy between crevice gaps and has excellent adhesive strength with leaking wet concrete, while epoxy repairing agent is mixed in the field by using two-component type composed of main body and hardener. When it is difficult to precisely mix, and the mixed epoxy is injected into the gap of water leaking with an industrial syringe, it is sealed and completed the repair work.However, in the early stage of repair work, it is completely repaired by bonding it with the concrete surface of the leaked part of the concrete structure. Even if it is completed by the time elapsed and the curing proceeds by the curing agent, the epoxy is often separated from the adhered concrete surface due to the deformation due to the hardening, so that the gap occurs frequently, there is a drawback that leaks again.

Polyurethane injection repairing method is a method of injecting low-viscosity polyurethane into the crack part with an industrial syringe to seal and repair the leaked part. The polyurethane repairing agent is composed of a two-component type composed of a main body and a curing agent. When injected into the cracks of the concrete structure leaking into the cracks, the main polyurethane is cured by a hardener to seal the leaks and seal the leak.

Polyurethane repair agent has rubbery elasticity even when cured by hardener. Therefore, it prevents deformation after curing and prevents leakage by sealing gaps that are continuously leaked by elasticity.However, when contacted with water, the biggest disadvantage of polyurethane, Due to the defect that is decomposed by water, the polyurethane is sealed between the cracks of concrete cracked as the urethane is decomposed and eroded by the injection of polyurethane and reacted with water that gradually leaks after 6 months. As urethane shrinks and relaxes, there is a defect of leaking again due to the gap caused by falling out of the concrete wall. Recently, the urethane repair method has been avoided.

Concrete structures constructed during or after construction of open tunnels, underground roadways, subways, etc. are damaged by infiltration water due to infiltration or leakage due to cracks and cracks. The repair method of injecting epoxy or polyurethane into the industrial syringe is mainly applied to the crack of the leaked part, but the epoxy or urethane repair agent injected and sealed into the crack of cracks and cracks generated in the past has a good effect in the early stage of repairing. However, over time, there is a closed concrete surface that has been repaired and dropped and re-leaked, and even if it is completely repaired, if the leaked part moves to the surroundings, a new crack is generated, and this occurs, Repair work should be continued according to the epoxy injection method. In the recent years, the refill injection method for the retan injection is not easy to fundamentally repair the leaks of concrete structures. Therefore, the cement milk grouting repair method has recently been applied.

In the cement milk grouting repair method, when water leaks into the inside of the concrete structure and leaks, the cement milk grouting repair agent is drilled through the repair agent injection through hole that penetrates the concrete structure from the site where the leak occurs on the inner surface of the concrete to the outer waterproof layer. The injection hole is formed so as to inject the water, and the water leaked into the waterproof layer on the outer surface of the concrete structure through the formed injection hole by injecting cement milk grouting to seal the source, thereby leaking the leakage due to the infiltration. The repetitive repair work was improved.

Cement milk grouting repair method is a repairing method that is superior to conventional epoxy repair method and urethane repair method by repairing the concrete outer surface where water leaks due to flooding of concrete structure. It is composed of water, and when it is injected into the leaking space, it is hardened while filling the space.The cement milk grouting method should be continuously injected into the flooded space, and when the cement milk grouting repair agent is stopped while injecting In the first cement milk grouting repairing material, when the new cement milk grouting repairing material is hardened and water is injected into the space gap due to the separation of layers, the cement milk grouting repairing material is hardened. There is a closed end that has a leak.

The present invention is to solve the problems of the conventional various waterproofing materials, the purpose of which is a water swelling agent and a non-drying oil (volume) in which the volume expands by hydration reaction with water (water) when the rubber (rubber) in contact with water (不 乾性油) It is to provide a water-expandable water-retaining material for the rubber base material that is not cured and a method for producing the water-retaining rubber agitated rubber agitated in the form of a viscous mastic form dissolved in an organic solvent.

In addition, another object of the present invention is to provide a repair method for repairing using a non-hardening repair material in the form of a water-expandable mastic of the rubber base of the present invention.

Another object of the present invention is to repair the leaked water penetrating from the site of leakage of the concrete inner wall to the waterproof layer of the outer wall when the concrete structure is damaged by seepage and leakage due to floating settlement, cracks and cracks or waterproof construction defects Injecting water-expandable water-retaining material of the viscous mastic rubber main body of the present invention through the inlet to fill and fill the space in which water is submerged, while repairing the water first, self-repairing, water and hydration reaction to the volume ( 2) to 3 times as the volume expands and seals and pressurizes the empty space by expansion pressure so that the water is not submerged any more, and the gap between the cracks and cracks on the inner wall is secondarily filled to continuously invade or leak. It is to provide a construction method.

According to a feature of the present invention for achieving the above technical object, when the present invention is damaged by the submersion of the concrete structure (concrete) during construction or completed construction, damage by cracks or flooding due to waterproof construction defects, The present invention provides a method of manufacturing a repair material that blocks water from ingress and leakage into a damaged concrete structure, and a repair construction method using the same.

In general, the water flowing into the submerged or leaking water in the concrete structure is caused by cracks and cracks caused by the floating settlement or behavior of the concrete structure itself, or by the failure of the waterproof layer due to the waterproof construction failure, the damage of the waterproof layer, or the waterproof layer is deteriorated. When separated from the surface, the water introduced into the damaged part of the waterproofing layer diffuses along the separated part of the waterproofing layer, and water leaks into the concrete through cracks and cracks, which are weak parts of the concrete structure.

The water-expandable repair material of the rubber main body of the present invention penetrates from the inner surface of the concrete structure to the waterproof layer on the outer surface of the concrete structure in which the water introduced is flooded or leaked by cracks and cracks due to the behavior of the concrete structure or breakage of the waterproof layer. When the water-expandable water-retaining material of the rubber main body of the present invention is injected through the water-retaining agent injection hole, the water-repellent reaction with the introduced water is performed while filling the space of the damaged water-resistant layer on the outer surface of the concrete wall, and hydrating with the introduced water. By inflating ˜3 times, the water flowing into the secondary by the expansion pressure is blocked at the source, and on the one hand, it is completely sealed by filling and sealing the cracks and cracks on the inner surface of the concrete to ensure perfect repair.

The water-expandable water-retaining material of the rubber main body of the present invention is immersed in the rubber (rubber) by adding a tackifier such as petroleum resin, polybutene, and has the same adhesive properties as the adhesive, and the addition of polyacrylate and CMC, which are compatible with water, And it is to provide a method for producing a repair material excellent in adhesion even with concrete that is wet with water leaking.

The water-expandable water-retaining material of the rubber base of the present invention is composed of a viscous liquid phase, so that the joint is easily bonded between the water-retaining material and the water-retaining material, and the adhesion is excellent with the concrete surface with water, and cracks and cracks are generated in the concrete wall. Adhesion is very good with water wet concrete where water flows in between the flowing gaps or the damaged waterproof layer on the outer surface of the concrete wall. When the repair agent of the present invention is injected into the damaged concrete structure, the water is flooded due to the inflow of water into the concrete wall. Water-tightening function is performed while filling closely with the concrete outer surface of the leaking space, and water is introduced into the damaged concrete wall by hydrating and reacting with the water introduced during filling to expand and seal the volume by 2-3 times. In case of perfect repair to cut off water and completely block inundation and leakage To provide a method.

For example, the embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited by the embodiments described below. These examples are provided to more fully explain the present invention to those skilled in the art. Accordingly, the shape of the elements in the drawings and the like are exaggerated to emphasize a clearer description.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 3. In addition, in the drawings, the same reference numerals are denoted together for components that perform the same function.

1 is a flowchart illustrating a manufacturing process of a repair agent according to an embodiment of the present invention, Figures 2 to 3 relates to a construction method using the same.

The composition of the water-expandable viscous mastic repair agent of the rubber base of the present invention is as follows.

Rubber base: One of natural rubber and synthetic rubber (CR rubber, IIR rubber, BR rubber, EPT rubber, SBR rubber, NBR rubber, IR rubber) ........ 100 g

Tackifier: Cumarone Resins ..................... 15 g

             Polybutene ..................... 10 g

Water swelling agent: Sodium polyacryllate .. 3-5 g

             Sodium Carboxymethylcellulose (CMC) .............. 1-3 g

Softener: Castor Oil ........................ 15 g

             Liquid Paraffin Oil ........................... 10 g

Antioxidant: Phenolicisopropyl-p-phenylenediamin (......) 2 g

             Plymerized trimethyl dihydroquinoline (...) 1 g

Filler: Calcium Carbonate ......... 30 g

             Diatomaceous Earth ..................... 20 g

The embodiment of the present invention as described above as an example, since the rubber material is different inherent physical properties and characteristics by type, according to the use of the repair agent of the present invention or the demand of the consumer alone, natural rubber or synthetic rubber It may be used as a mixture or a mixture of natural rubber and synthetic rubber. The present inventors tested the natural rubber and synthetic rubber alone or mixed, and the result is a mixture of CR rubber and IIR rubber in a 6: 4 ratio, or IIR rubber (spray rubber) and IR rubber (Isoprene rubber) 7: The mixture prepared in 3 ratios was very good in water-soaked concrete and interfacial adhesion, and the original elasticity and viscosity were maintained without releasing in water even if the volume expanded 2-3 times by contact with water and hydration.

As a result of putting the water-expandable liquid water-retaining material of the rubber main body of the present invention into a large test tube containing water, it was shown that the adhesion with the glass wall of the water-soaked large test tube was very excellent, and the water refining material was submerged in water and separated from the water. It was confirmed that the water located in the upper portion of the repair agent expands as the volume of the repair agent expands after 6 hours while being located in the upper part of the repair agent. The water-expandable water-retaining agent of rubber was found to be free from constituents in water even though the volume expands by hydration reaction.

This can be estimated that if the repair of the present invention is repaired with the repair of the present invention when water is inundated or leaked due to damage due to the behavior of the concrete structure wall or breakage of the waterproof layer, there is no environmental pollution,

The inventors made the shape of the structure damaged by the cement mole-detalization and injected the water-expandable liquid repair agent of the rubber base of the present invention, filling the empty space into which water is introduced and penetrating the cracked gap to fill the gap and infiltrate the gap. It was confirmed to block.

Referring to Figure 1, looking at the manufacturing method of the present invention according to the components and component ratios as described above, first, natural rubber or in a closed mixing machine Bambury Mixer (Bambury Mixer) or Kneader Mixer (Kneader Mixer) Stir and mix evenly so that 100 g of synthetic rubber (CR rubber, IIR rubber, BR rubber, EPT rubber, SBR rubber, NBR rubber, IR rubber) is added and it is evenly dispersed by putting gluing agent (15 g) and polybutene (10 g). After adding the anti-aging agent (3) (2g), (3g) sodium acrylate (5g) and swelling agent (3g), add calcium carbonate (30g) and diatomaceous earth (20g) ) And the rubber mixing dough mixed with softener castor oil (15g) and liquid paraffin (10g) to mix well and evenly mixed in the open roller, a rubber mixing machine. 7-10 mm) sheet (first mixing step) is cut The finely cut in.

Put the finely cut rubber mixture dough into the liquid stirrer, add organic solvents such as toluene, xylene, and solvent in a ratio of 1: 2 to the rubber mixture dough, and stir it with the liquid stirrer. The mixed dough is completely dissolved in an organic solvent such as toluene, xylene or solvent to prepare a water-expandable water-retaining agent in a viscous mastic rubber base material having a viscosity of 4000 to 5000pcs (secondary mixing step).

In detail, in the present invention, when the solvent, toluene, xylene, or solvent, is added at a rate of 2000 cc to 1 kg of the rubber mixed dough, the water-expandable property of the viscous mastic form of the present invention is completely dissolved. Repair materials are manufactured.

The organic solvents such as toluene, xylene, and solvents are highly volatile aromatic organic solvents, and there is a risk of a large topic during manufacturing or maintenance work, and thus, trichloroethylene and non-flammable ethylene solvents (Trochloroethylene) If a nonflammable solvent composed of chlorides such as Perchloro Ethylene and Methylene Chloride is added at a ratio of 2000cc to 1 Kg of rubber mixture dough having the same ratio as above, it is completely dangerous. A non-combustible mastic form of water expandable repair agent is prepared.

Since the nonflammable solvents such as trichloroethylene, perchloroethylene, and methylene chloride are relatively expensive, if a reduction in manufacturing cost is desired, toluene, xylene, which are general aromatic solvents, are included in the nonflammable solvent. The water-expandable water-retaining material of a non-flammable rubber main material can be manufactured even if it mixes 30%-50% of solvents, such as a solvent.

The water-expandable water-retaining material of the rubber main body manufactured by the above-mentioned manufacturing method is added to the rubber main body by adding a tackifying agent, such as a guaron resin and polybutene, and when contacted with water absorbs water and expands the volume by 12 to 15 times. After drying, it shrinks to its original volume, and when contacted with water again, sodium polyacrylate, CMC, which is a water-expanding agent that repeatedly absorbs water and expands in volume, is added and mixed. It is made of liquid by adding liquid adhesive with a large amount of tackifier and making it to be very strong. It is made of liquid by adding water-expansive agent with excellent affinity for water, so it adheres very well to concrete walls in water. It was formulated to be excellent.

In order to prevent the water-expandable water-retaining material of the rubber main body of the present invention from excessively expanding due to excessive hydration expansion in contact with water to destroy the impermeable layer and losing water-proofing ability, only a small amount of water-expanding agent is added to expand 2-3 times. By preparing, the water-retaining agent of the present invention forms a dense impermeable layer so that it exhibits a waterproofing performance at the same time, but does not fall off due to strong adhesive force and adhesion even in contact with water at a high flow rate. In addition, since the water-expandable water-retaining material of the rubber main body of the present invention is supplemented by adding an anti-aging agent and a water-resistant softener in order to exert the function of the water-retaining agent for a long time while in contact with water, the durability is excellent.

In the case of requesting an inexpensive repair agent according to the request and market conditions of the consumer, according to the composition ratio of the embodiment of the present invention, 40 g of asphalt (Asphalt) is added while adding tackifiers, such as tackifiers, such as guaron resin and polybutene. When the softener, anti-aging agent and filler are added and dissolved in an organic solvent, a low-cost repairing agent of the present invention is produced. The adhesive property of rubber and added tackifier and asphalt are synergistic, so the stickiness is very excellent and wet with water. Excellent adhesion to concrete.

However, when asphalt is added, it is softened when it is added to the rubber main ingredient and dissolved in the solvent, so that it is too soft. Therefore, only castor oil (15 g) is added, excluding the addition of liquid paraffin (10 g) in the composition and composition ratio of the above embodiment. Asphalt is good to add bad asphalt.

The technical technique of the water-expandable water-retaining material, which is a rubber main material according to the present invention, is added to rubber with tackifiers, such as guarone resin and polybutene, water-swelling agent sodium polyacrylate and CMC, and inorganic fillers calcium carbonate and diatomaceous earth. It is a water-repellent waterproofing agent which is made by adding a softener, castor oil, and mixing and stirring it in an organic solvent to make a viscous liquid in the form of sticky slime liquid mastic like honey which has excellent waterproofing performance. If the base surface of the structure is cracked and cracked due to the movement of the structure or the waterproof layer is damaged, the water-expandable repair material, the rubber main body of the present invention, which is a fluid liquid in the form of a viscous mastic, is damaged when injected and repaired. It adapts to the shape and space of the site, makes it waterproof and self-repairing. When water flows in, it hydrates with water in the second time and expands the volume two to three times, consolidating and adhering to the surface of the concrete structure damaged by the expansion pressure, thereby blocking the inflow of water at the source and performing a perfect repair function.

In order to fully demonstrate the technical technique of the present invention, the role of the rubber and the tackifier is to perform a function as a waterproofing material while exhibiting a sticky adhesive force, the role of the water-expanding agent mixed with rubber absorbs water when in contact with water As the volume expands, it creates an expansion pressure, and the softener has a continuous fluidity to adapt to the behavior of the concrete structure so that the space adaptation is smooth.

Water-expandable rubber products prepared by adding a water-expanding agent to a conventional rubber material are used after being vulcanized or cured, whereas the water-expandable repair material of the rubber material of the present invention is not hardened and is not used as a softener to maintain continuous fluidity. Dry oil, castor oil, and liquid paraffin were added to maintain a consistent sticky mucus at all times.

2 and 3, the rubber-based water-expandable repair agent according to the manufacturing method of the present invention to the ground and the roof of the building or the underground structure of the building and underground concrete structures such as subways, underground roads, etc. When the waterproof layer is lost due to the behavior of concrete or by the breakage or aging of the waterproof layer, and water leaks due to water intrusion, the inner side wall 112 of the concrete structure 110 to the waterproof layer 114 of the outer side wall After drilling to secure the leakage repair inlet 120 (see A in FIG. 3), when the water-expandable repair agent 130, which is a rubbery mucus-based rubber material of the present invention, is injected into the injection machine, the damaged voids are filled primarily. And self-healing by forming a new waterproof layer (see B of FIG. 3), and when water (infiltration water) is flooded from the outside, hydration reaction with water that is secondarily submerged to double the volume And it expands to fundamentally cut off by the water immersion by a swelling pressure (see Fig. 3 of C) provides a construction method that is a perfect complement construction.

In the above, the configuration and operation of the repairing material according to the present invention, its manufacturing method and the repairing method using the same are shown according to the above description and the drawings, which are merely described for example and do not depart from the technical spirit of the present invention. Of course, various changes and modifications are possible within the scope.

When the present invention is applied, the water-expandable water-retaining material of the rubber material of the present invention, which is formulated in the composition ratio of the above embodiment, is a rubber dough obtained by adding a tackifier, a water swelling agent, a softening agent, an anti-aging agent, and a filler to the rubber material. When the water-repellent material of the present invention is injected through the water inlet to the site where water is introduced due to the behavior of the concrete structure or aging and breakage of the concrete structure or water leakage due to the breakage of the organic structure, the organic solvent is dissolved. Self-repair while adapting and filling the space into which various shapes of water flows, showing the primary waterproofing function, and condensing the space tightly by inflation pressure while expanding the volume two to three times in contact with the continuously flowing water. Block the leaking passage so that it can be completely repaired secondarily.

In addition, it is prepared not to dissolve in the general aromatic organic solvent, but dissolved in a non-combustible organic solvent to prepare a strong water-expandable water-repellent material in a viscous viscous mastic state to prepare for a large fire.

1 is a flow chart for explaining a method for manufacturing a repair material according to an embodiment of the present invention;

2 and 3 are views for explaining a repair construction method using a repair material according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

110: concrete structure

114: waterproof layer

120: injection hole

130: liquid water-expandable repair material

Claims (8)

In water-expandable repair materials: A rubber mixture is made by mixing a tackifier, an anti-aging agent, an expanding agent, a filler, and a softener with a rubber main material, and an organic solvent is further mixed with the rubber mixture to prepare a viscous mastic state. Water-expandable repair material characterized in that. The method of claim 1, The mixing ratio of the rubber mixture dough and the organic solvent is about 1: 2, The softener is water-intumescent repair material, characterized in that the non-drying oil. The method of claim 1, The rubber mixture dough further includes asphalt, The organic solvent is a water-expandable water-retaining material, characterized in that the non-combustible solvents trichloroethylene, perchlor ethylene, methylene chloride. In the method of manufacturing the water-expandable repair material: A primary mixing step of mixing the rubber main material with a tackifier, a water expander, a softener, an anti-aging agent, and a filler to form a rubber mixed dough in a dough state; Method for producing a water-expandable repair material comprising a second mixing step of mixing the organic solvent to the rubber mixture dough to make a viscous mastic (mastic) state. The method of claim 4, wherein The mixing ratio of the rubber mixture dough and the organic solvent is about 1: 2, The softener is a non-drying oil, characterized in that the water-expandable repair material manufacturing method. The method of claim 4, wherein Asphalt is further added to the rubber mixture dough, The organic solvent is a non-combustible solvent trichloroethylene, perchlor ethylene, methylene chloride, characterized in that the water-expandable repair material manufacturing method characterized in that the. In a method of waterproofing a structure having a wall and a waterproofing layer using a water-expandable repairing material: Forming an injection hole in the wall surface through which the waterproof layer passes; Injecting the water-expandable repair material into the portion where the waterproof layer is broken through the injection hole; Waterproof repair construction method using a water-expandable repair material, characterized in that it comprises the step of sealing the inlet. The method of claim 7, wherein The water-swellable water-retaining material is made of a rubber mixed dough in the state of kneading by mixing a tackifier, water-expanding agent, softener, anti-aging agent, filler in the rubber main material, and viscous by mixing the organic material in the rubber mixed dough Waterproof repair construction method using a water-expandable repair material, characterized in that manufactured in a mastic (mastic) state.