KR101833399B1 - Foam concrete reinforcing plate material panel - Google Patents

Abstract

The present invention relates to a foam concrete reinforcing plate material panel and, more specifically, relates to a foam concrete reinforcing plate material panel, wherein normal cement is used to form a foam structure having a uniform size at room temperature. Moreover, the panel is attached to a foam concrete body that is lightweight, has excellent soundproof, insulation, nonflammable, and dampproof effects, does not emit a poisonous gas at high temperature, and has an excellent coupling force in the foam structure. Therefore, strength of the panel is reinforced not to be easily broken while maintaining insulation and incombustibility to completely substitute a styrofoam panel and a urethane panel.

Description

{Foam concrete reinforcing plate material panel}

More particularly, the present invention relates to a panel for reinforcing foamed concrete, and more particularly, to a panel for forming a foamed structure having a uniform size at room temperature using ordinary cement, and is lightweight and excellent in sound insulation, heat insulation, fire- Improved foam concrete reinforcement to completely replace styrofoam panel and urethane panel by reinforcing strength to prevent breakage while maintaining adiabatic and nonflammability by attaching to foamed concrete foam that does not release gas and has excellent bonding strength between foamed structures To a panel attachment panel.

Generally, when a foamed ceramic or foamed cement (ALC) is produced, a long curing process or a high temperature is required.

Energy resources on the planet are limited and energy is essential in all areas of the home, industrial production, transportation, and commerce.

Therefore, it is important to reduce energy conservation and resource consumption on the earth, but it is also important to reduce energy loss and waste.

Approximately 30% of the energy consumed in Korea is used for cooling and heating of non-residential buildings including residential and office buildings, and research and development on ways to reduce energy waste through buildings are ongoing. One of them is the consumption of energy through walls Or research and development of insulation materials to reduce waste.

On the other hand, the noise has a psychological effect, which causes a decrease in the ability of thinking, an interruption of rest and sleep and conversation, a hindrance to sound daily life, a physiological increase in fatigue, a haste, a difficulty of concentration, Gastric secretion, cardiovascular system, secretion of drowsiness, autonomic nervous system, endocrine system and sleep, etc. will have a bad influence on the walls of buildings and insulation materials, sound insulation is used.

The wall according to the prior art uses a ceramic or foamable polymer material formed with fine air cells (foamed structure) or a porous ceramic formed with an air layer and a sound absorbing material capable of absorbing noise in order to enhance heat insulation, soundproofing or sound absorption effect And the air layer can be formed by foaming or the like. The heat insulating material and the soundproofing material according to one embodiment of the prior art are made of foamed polystyrene, glass surface, foamed polyethylene, polyurethane foam, Vermiculite, Perlite, urea foam, cellulose heat insulator, soft fiberboard, phenol foam, And so on.

Foamed polystyrenes have high insulation and light weight, and are excellent in transportation and construction. However, since the maximum safe working temperature is 70 ℃, they are vulnerable to high temperatures and ultraviolet rays. In case of fire, there is a danger of ignition and poisonous gas generation.

On the glass surface, the air layer sealed between the glass fibers forms a heat insulating layer and has excellent nonflammability, sound-absorbing property, workability and transportability. There is no fear of reduction in effective thickness due to compression and settlement, Installation is required.

Foamed polyethylenes are made by mixing polyethylene resin with a blowing agent and a flame retardant, extruding foamed foams and then laminating and fusing plate-shaped foaming agents to produce self-extinguishing insulated plates and thermal insulation tanks. Since the average thermal conductivity is less than 0.039 kcal / mh ° C There is a problem that the safe use temperature is up to 80 ℃ and the toxic gas is released in case of fire.

Polyurethanes are polyols, polyisocyanates, blowing agents and additives for flame retardancy.

The organic foams (open cell structure) foamed with polyurethane foam have excellent heat resistance (maximum temperature of use 100 ℃) and excellent heat insulation. Especially, it is used as a cold insulating material for refrigeration equipment. However, There is a problem in that a toxic gas is released in the same manner as other foamable polymer materials when a fire occurs.

Vermiculite is a mica type ore that is fired at 1000 ℃ or higher and has advantages in insulation, insulation, fire prevention, soundproofing and prevention of condensation.

Purite is made by calcination of volcanic stones at 900~1200 ℃, followed by sintering and expansion. It is made of lightweight spherical small particles with micropores inside and is used as lightweight aggregate and insulation material. It is effective for insulation, insulation and sound absorption. There is a problem that a high energy of 1,000 DEG C or more is required for foaming minerals such as vermiculite and perlite.

The aerogels have the advantage of excellent heat insulation and soundproofing effect because 95% of the total volume is entangled like a cotton candy because the structure of a thickness of a thousandth of a hair is entangled, but it is limited to some high-tech industries due to the problem of relatively high cost.

Lightweight cement can provide economical foam by using cement which is cheap as a binder. However, because it cures in a high temperature and high pressure reactor (autoclave), the economic burden on installation is large, and in order to cure foamed cement, And there is a problem that cement curing takes a long time.

Particularly, when lightweight cement is directly applied to the wall surface of an architectural structure such as an apartment, the curing time takes several days to several tens of days, so that the foamed cement foam is poured and lightweight bubble for insulation and soundproofing Cement can not be provided, cement hardening and vesicles are generated at the same time, so that the bond between the cement particles and the particles is broken, resulting in a problem that the compressive strength after curing is remarkably lowered.

If the foamed material is a petrochemical product, toxic gas emission can cause fatal damage and accelerate environmental pollution in the event of a fire. Foamed ceramic or lightweight foamed cement requires a large-scale facility system and requires a high-temperature manufacturing process and a long- In addition, there is a problem that energy loss is large and productivity and workability are deteriorated because a construction work for insulation and soundproofing is installed at a work site.

Particularly, since foamed ceramics use a certain frame for compression molding, a large amount of equipment cost is required, and expensive materials such as aerogels are used, which makes the cost competitiveness of the foamed ceramics limited.

In the prior art data that have been researched and developed to overcome the above problems, Korean Patent Laid-Open Publication No. 2006-0092782 (Aug. 23, 2006) "Ceramic foamed molding and its manufacturing method" And various kinds of inorganic adhesives including gypsum, cement, clay, sodium silicate, incomplete gelled sodium silicate, sodium silicate cement, and the like, and other reinforcing materials There has been proposed a method of providing a ceramic foamed molded product in which durability is enhanced by mixing a steel fiber, a fiber clay, a paper crushing product (including a powder type) and glass wool (glass wool), or by inserting a wire net or a synthetic resin net therein.

Korean Unexamined Patent Publication No. 2003-0086955 (Nov. 13, 2003) "A technique for manufacturing lightweight foamed concrete using an expandable lightweight aggregate for the production of a fireproof sandwich panel" And the surfactant lauryl alkylbenzene sulfonate based material to adjust the air density to about 40 to 50 kg / cm 2. The resulting bubbles, cement slurry, and expanded vermiculite are mixed to form a toxic, It is proposed a non-combustible lightweight foamed concrete sandwich panel considering the finishing of outer wall and insulation.

Korean Unexamined Patent Application Publication No. 2000-0060707 (Oct. 16, 2000) "Sound Absorption Sound Insulation Panel Using Lightweight Foamed Concrete" is a lightweight foamed concrete obtained by adding a foaming agent to cement, lime and silicate fine powder and curing by steam curing or high- Which is a sound absorbing material.

Korean Unexamined Patent Application Publication No. 2006-0092782 discloses a method for manufacturing a foamed ceramic by providing various kinds of rocks including vermiculite, perlite, obsidian, And the pulverized particles are heated at a high temperature of 800 to 1400 DEG C, so that a large amount of heat energy is required for the production of foamed ceramics and a large facility cost is required. In addition, the foamed ceramic particles are also coated with gypsum, cement, It is merely a mixture of an inorganic adhesive including soda, incomplete gelled sodium silicate, and sodium silicate cement. Therefore, there is a problem that it can not be directly installed at a construction site.

Korean Unexamined Patent Application Publication No. 2003-0086955 discloses a cement composition which can provide excellent foaming power by a surfactant and provide economical efficiency by using cement as an inorganic binder. It takes a long time between 1 and 2 days, resulting in a problem of low productivity. When the casting method is applied to the wall surface of a building using the proposed method, it does not harden immediately and thus flows down to the floor immediately after the casting, there is a problem.

Korean Unexamined Patent Application Publication No. 2000-0060707 can provide a lightweight concrete having a porous property, which can be excellent in sound absorption effect. However, since the foamed concrete is cured by steam curing or high temperature and high pressure steam, There is a problem that the cost is low and the curing is not carried out immediately after being placed on the wall, so that there is a problem that it can not be installed directly at the construction site.

Therefore, it is necessary to develop a lightweight cement manufacturing technology that uses ordinary cement, forms foam with uniform foam size at room temperature, requires short curing time, does not generate toxic gas even at high temperatures, and has excellent bonding strength between foamed structures , The Applicant has thus obtained a patent for manufacturing foamed concrete foam.

Korean Unexamined Patent Publication No. 2006-0092782 (Aug. 23, 2006) "Ceramic foamed molded article and manufacturing method thereof" Korean Unexamined Patent Publication No. 2003-0086955 (Nov. 13, 2003) "Manufacturing Technology of Lightweight Foamed Concrete Using Expandable Lightweight Aggregate for Manufacture of Non-burning Sandwich Panels" Korean Unexamined Patent Publication No. 2000-0060707 (October 16, 2000) "Sound-absorbing sound insulation panel using lightweight foamed concrete"

The present invention has been made in order to solve the problems and necessities of the prior art as described above. The present invention forms a foamed structure of uniform size at room temperature by using general cement, and is lightweight and excellent in soundproofing, heat insulation, fire- Improved foam concrete reinforcement to completely replace styrofoam panel and urethane panel by reinforcing strength to prevent breakage while maintaining adiabatic and nonflammability by attaching to foamed concrete foam that does not release gas and has excellent bonding strength between foamed structures Thereby providing a panel attachment panel.

In order to achieve the above object, the present invention provides a lightweight foamed cement composition comprising water and a cement additive, wherein the cement additive has a weight ratio of 1: 2.44 to water: 1: 0.244, Calcium carbonate having a weight ratio of 1: 0.542, hydrogen peroxide having a weight ratio of 1: 0.213, lithium carbonate having a weight ratio of 1: 0.0030, calcium having a weight ratio of 1: 0.027, : 0.008, a crude steel having a weight ratio of 1: 0.0818, carbon having a weight ratio of 1: 0.182, a polymer having a weight ratio of 1: 0.0164, silica fume having a weight ratio of 1: 0.016, , A water reducing agent having a weight ratio of 1: 0.0064 and a Pecic mineral having a weight ratio of 1: 0064, and the molded product having the block shape formed by molding the lightweight foamed cement composition was mixed with 20% by weight of at- %, And D 10 wt% of a mixture of choline ethane and methylene chloride in a weight ratio of 1: 1, 15 wt% of hydroxyethyl celluloses and the remaining glycidyl neodecanoate was impregnated and impregnated, followed by drying A foamed concrete foam;

An adhesive applied to upper and lower surfaces of the foamed concrete foam;

And an iron plate bonded and fixed to the upper and lower surfaces of the foamed concrete foam through the adhesive,

Wherein the steel plate is punched by a random punching method to have an adhesive anchoring structure, and aluminum is deposited on the non-adhesive surface of the steel plate to a thickness of 0.1-0.2 mu m.

According to the present invention, it is possible to form a foamed structure having a uniform size at room temperature by using general cement, and to provide a foamed structure which is lightweight and excellent in sound insulation, heat insulation, fire- It has the advantage of being able to completely replace styrofoam panel and urethane panel by reinforcing the strength to prevent breaking easily while maintaining insulation and nonflammability by attaching to concrete foam.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flowchart showing a manufacturing method for making a foamed concrete foam for panel realization according to the present invention.
Figure 2 is an exemplary sample of foamed concrete foam made according to Figure 1;
Fig. 3 is a photograph of the surface of the sample of Fig. 2 made into a block for panel manufacture.
FIG. 4 is an exemplary photograph showing a panel made by attaching an iron plate to the front and back surfaces of the block-shaped foam of FIG. 3;

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the description of the present invention, foam cells, foam tissues, and air cells are used in the same meaning, and they are to be uniformly used as foam tissues, but they are suitably mixed according to the context.

As illustrated in FIGS. 1 to 4, foamed concrete foam must first be made for panel manufacture according to the present invention.

The foamed concrete foam is formed by a lightweight foamed cement composition, wherein the lightweight foamed cement composition comprises water and a cement additive; The cement additives include Portland cement, quick cement cement, calcium carbonate, hydrogen peroxide, lithium carbonate, calcium and fiber, ESA (Early Strength Admixture), and Polymer ), Silica fume, water reducer (water reducer) and femic mineral (Femic Chloride).

Cement is classified into hydraulic cement which is categorized largely into air only, and hydraulic cement and special cement that cures in air and water, and portland cement, which is called general cement, is classified as hydraulic cement.

Portland cement is based on KS L 5201 standard and includes one kind of ordinary cement, two kinds of thermal cement, three kinds of crude steel cement, four kinds of low temperature cement and five kinds of sulphate cement.

Class 1 Cement is a common cement, and it is cement used for civil engineering and construction work.

Two kinds of medium thermal cement usually have hydration heat corresponding to the middle level between cement and low heat cement, and have a small shrinkage due to drying shrinkage. It is a cement which improves long term strength and can be used for dam, tunnel, road pavement and runway construction.

Three kinds of crude steel cement have high hydration speed and usually exhibit strength of 28 days in 7 days and they can be used for emergency work, winter construction, subway construction, concrete secondary product production because of good strength development at low temperature.

Four kinds of low-temperature cement are excellent in temperature crack control due to low hydration heat, and have high fluidity and high strength. It is used for LNG underground storage tank, large-scale buildings including underground continuous walls, and mass concrete works in various fields. .

Sulfuric acid cement of 5 kinds has a weak resistance to sulfate by minimizing weak acid component in cement component and is highly stable in chemistry and exhibits excellent strength. Therefore, soil, underground water, structure facing river, factory wastewater facility, Nuclear power plants, nuclear power plants, nuclear power plants, etc.

It is most preferred that the general Portland cement comprises 200 to 270 parts by weight of water per 100 parts by weight of water, and most preferably water: ordinary Portland cement at a weight ratio of 1: 2.44.

When the conventional Portland cement is composed of more than 270 parts by weight of the above-mentioned Portland cement, the size and number of the foamed structure are reduced, and the weight per unit area is rather increased.

On the other hand, when the general Portland cement is composed of less than 200 parts by weight of the above-mentioned Portland cement, the foamed structure is not uniformly formed and the finished foam easily breaks.

Rapid-speed cement is usually used in 2 ~ 3 hours to express 7 days strength of cement and has more rigidity than alumina cement. It can be used mainly for emergency repair of roads, bridges, mechanical foundation work, have.

The quick-setting cement is preferably provided in an amount of 25 to 35 parts by weight based on 100 parts by weight of water, and the water-based fast curing cement is preferably provided in a weight ratio of 1: 0.271.

In the case of mixing the cement with the quick-setting cement at a ratio of 35 parts by weight or more, the curing progresses rapidly, but the foamed structure is not uniform, the components are not smoothly mixed, .

On the other hand, when the ultra low speed cement is mixed with 25 parts by weight or less of the above-mentioned cement, there is a problem that the effect of promoting hardening hardly appears.

Calcium carbonate (CaCO ₃ ) is a carbonate of calcium and is the main component of chalk used in blackboards. It is not soluble in water and is used as one of raw materials for cement.

Preferably, calcium carbonate is present in an amount of 40 to 70 parts by weight based on 100 parts by weight of water, and water: calcium carbonate in a weight ratio of 1: 0.542.

Calcium carbonate acts to increase the porosity of the final cured cement product. When the amount of the calcium carbonate is less than 40 parts by weight, the porosity is not increased. When the amount is more than 70 parts by weight, There was no effect change.

Hydrogen peroxide (H ₂ O ₂ ) is used as a bleaching agent, an oxidizing agent and the like, and it is preferably provided in 20 to 25 parts by weight with respect to 100 parts by weight of water, and water: hydrogen peroxide in a weight ratio of 1: 0.213.

When the hydrogen peroxide was added in an amount of less than 20 parts by weight, the bleaching effect of the cement hardly appeared.

Lithium carbonate is added in order not only to lower the thermal expansion and viscosity but also to block the influence of the toxic chemicals, and is added in an amount of 0.2-0.4 parts by weight with respect to 100 parts by weight of water, and water: lithium carbonate in a weight ratio of 1: 0.0030 Is particularly preferable.

Preferably, calcium (Ca) is present in an amount of 2 to 3.5 parts by weight based on 100 parts by weight of water, and water and calcium in a weight ratio of 1: 0.027.

Calcium promotes foaming, and when the calcium carbonate is added in an amount of more than 3.5 parts by weight, there is almost no change in promotion of foaming with respect to an increase in the amount of the calcium carbonate. When the calcium carbonate is added in an amount of less than 2 parts by weight, have.

Preferably, the fibers are present in an amount of 0.5 to 1 part by weight based on 100 parts by weight of water, and the weight ratio of water to fibers is 1: 0.008, more preferably acrylic fibers.

The fiber can be used both as plant fiber and chemical fiber and acts to prevent cracking of the lightweight foamed cement and has a thickness in the range of 3 to 50 micrometers (um) and a thickness in the range of 5 to 7 millimeters Lt; / RTI >

The properties of the fiber according to one embodiment of the present invention are shown in Table 1 below, and all kinds of fibers satisfying such properties can be used.

Density (g / cm * 3) Diameter (um) Length (mm) Tensile Strength (MPa) Elastic modulus (GPa) 0.97-1.3 3-50 5-7 1600-2500 37-75

When the fibers are added in an amount of 1 part by weight or more, some of the finished fibers are not smoothly mixed and aggregated. Therefore, the fibers are not good in appearance and some fibers are protruded to the surface of the lightweight foamed cement. There is a minor problem.

When the fiber is added in an amount of 0.5 parts by weight or less, the final finished lightweight foamed cement is easily broken into small impacts.

The coercive agent is also referred to as E. Strength Admixture (E. Strength Admixture) and is preferably provided with 8 to 9 parts by weight based on 100 parts by weight of water, and water and crude coercive agent at a weight ratio of 1: 0.0818.

The crude steel (E.S.A) is composed of calcium chloride, triethanolamine, calcium nitrite, etc., and acts to rapidly cure hydraulic cement.

When the crude coagulant is further added (added) in an amount of 9 parts by weight or more as above, there is a problem that the composition is quickly cured, but the workability is bad and the cost efficiency is low. There is a problem that the curing time is too long because the user does not feel the effect to be put in.

Preferably, the carbon has 15 to 19 parts by weight based on 100 parts by weight of water, and water and carbon at a weight ratio of 1: 0.182. The carbon is preferably an organic carbon and an inorganic carbon, both of which can be used and have a low specific gravity.

Carbon is used as a chemical reaction promoter. When the amount of carbon is more than 19 parts by weight, the reaction is not promoted in proportion to the amount of the excess amount. When the amount is less than 15 parts by weight, It is proved difficult.

Preferably, the polymer or mortar powder is used in an amount of 1 to 2 parts by weight based on 100 parts by weight of water, wherein acrylic or urethane polymer is used, and water: polymer is contained in a weight ratio of 1: 0.0164.

The silica fume is preferably added in an amount of 1 to 2 parts by weight based on 100 parts by weight of water, and water (silica fume) is preferably added (added) at a weight ratio of 1: 0.016.

Silica fume improves the durability and strength of cement to a very high level, and is used as a part of binders and is relatively expensive. When the silica fume is added in an amount of 2 parts by weight or more, the durability and the strength are not improved any more, and the cost is high. When the amount is less than 1 part by weight, It did not appear obvious.

The water reducer is preferably added (added) in an amount of 0.5 to 1 part by weight to 100 parts by weight of water, and water (water reducing agent) is preferably constituted (added or added) at a weight ratio of 1: 0.0064.

The water reducing agent is an admixture which reduces the amount of water required for cement and accelerates the settling (solidification or hardening), and it can be used either one of RINGEN SURFADE, HYDROXYLATED CARBOXYLIC-ACID and the like.

When the water reducing agent is added in an amount of 1 part by weight or more, the effect of further improving the coagulation of the lightweight foamed cement foam is drastically reduced. When the amount is less than 0.5 part by weight, the effect of improving the coagulation hardly appears. Therefore, the water reducing agent is preferably added (added) in an amount of 0.5 to 1 part by weight based on 100 parts by weight of water.

The phenic mineral is preferably added (constituted or added) in an amount of 0.5 to 1 part by weight based on 100 parts by weight of water, and water (phenolic mineral) is preferably added (constitution or addition) at a weight ratio of 1: 0.0064. The phenic minerals are minerals containing iron (F) and magnesium (Mg) and can be wollastonite or calcite. They act to brighten the color of lightweight foamed cement foam. When more than 1 part by weight of the above is added And the addition of 0.5 part by weight or less of the above did not improve the performance.

Water was used as a standard for using tap water, but there was no significant difference in the composition ratio of each composition even when using different kinds of water.

Hereinafter, examples will be described.

[Example 1]

The composition ratio of each composition constituting the lightweight foamed cement foam was set to weight (Kg), and Example 1 was constructed as shown in Table 2 below.

Composition Composition weight ( Kg ) Composition Composition weight ( Kg ) water 55 Cement (General purpose) 134.3 Cement (crude steel) 14.9 Lithium carbonate 0.15 Calcium carbonate 2.98 Hydrogen peroxide 11.71 Calcium 1.5 fiber 0.44 Coercion 4.5 Carbon 8.9 Polymer 0.9 Silica fume 0.88 Water reducing agent 0.35 Phenic mineral 0.35

When the above compositions are mixed, a lightweight foamed cement foam can be produced which can be filled with a frame having a width of 1 meter (m), a height of 1 meter (m), or a molding frame.

[Example 2]

A method of producing a foamed concrete foam using the composition described and compounded in Table 1 above according to Example 1 will be described in detail with reference to FIG.

A check is made to see if the preparation of the composition for preparing the lightweight foamed cement foam is completed (S1000).

The composition of the lightweight foamed cement foam is dry-bimped with dry Portland cement, quick-setting cement, calcium carbonate, hydrogen peroxide, lithium carbonate, calcium, fiber, crude steel, carbon, polymer, silica fume, water reducer, S1100).

The time required for dry bombardment is in the range of 10 to 20 minutes, and it is most efficient and preferable to proceed for about 15 minutes, and it can be increased or decreased in proportion to the charged amount of the fiber.

As another example, silica fume can be excluded, and the process of excluding silica fume will be described later.

20 wt% (%) of water prepared in the dried non-beam-finished composition is charged (mixed) and subjected to a first wet non-beam treatment for a time selected from the range of 10 to 20 minutes (S1200). The first wet bibum is most efficient and preferred to proceed for 15 minutes and can be increased or decreased in proportion to the capacity of the input fiber.

40 wt% (%) of the prepared water in the first wet non-beam finished composition is mixed (S1300) for a selected one time period selected from the range of 20 to 30 minutes (S1300). The second wet non- Min is the most efficient and desirable, and it can be increased or decreased in proportion to the capacity of the input fiber.

40% (by weight) of the prepared water in the second wet non-beam finished composition is mixed and subjected to a third wet non-beam treatment (S1400) for any one time selected from the range of 30 to 40 minutes. The third wet non- Min is the most efficient and desirable, and it can be increased or decreased in proportion to the capacity of the input fiber.

As another example, when the silica fume composition is not added or mixed in the dry non-beam step, the prepared silica fume is added or mixed to treat the third wet non-beam.

When silica fume is added, the viscosity may be increased. Therefore, it is preferable to increase the time of the third wet bombardment by about 1 to 2 minutes.

The third wet non-beamed material is put into a prepared molding frame or a construction site, and the fixed state is maintained at room temperature (room temperature, 25 ° C) (S1500).

It is preferable that the time for the third wet bomb to be completed and put into the mold or aged by keeping the fixed state of the material put into the construction site is at least 30 minutes.

If the time of immersing in a fixed state without being moved at all is less than 30 minutes, there is a problem that the foamed structure is blown or the wind is released and the size of the foamed tissue is reduced. When the fermentation is completed for 30 minutes or more, It can cause trouble and lower productivity.

(S1600). After 4 hours, including the initial aging time of 30 minutes, at room temperature, the mold is removed or separated to prepare a foamed concrete foam. (S1700).

The foamed concrete foam produced by the above method is shown in the attached photograph of FIG.

The foamed concrete foam made from the lightweight foamed cement composition having the above-described structure has a plurality of foamed structures uniformly formed per unit area, and is excellent in soundproofing, insulation and moisture-proofing effects, and is lightweight and at the same time, It is used as building material, and is suitable for interlayer noise isolation and maintenance of comfortable living space.

In addition, it does not emit toxic gas even in a high temperature environment in the environment of use, so it is environmentally friendly and has an excellent bonding strength between foamed tissues and has a relatively long service life.

In addition, since it is manufactured at room temperature, the facility cost can be reduced.

At this time, the foamed concrete foam is formed into a block shape and has a shape as shown in FIG. 4, and the surface of the foamed concrete foam has a shape as shown in FIG.

Particularly, in order to increase the elongation and heat resistance of the foamed concrete foam and to increase the resistance to ultraviolet ray, durability and discoloration resistance, 20% by weight of ataplastite, 10% by weight of polybutene and 1% by weight of dichloroethane and methylene chloride : 1, 10 wt% of the mixture, 15 wt% of hydroxyethylcellulose and the remaining glycidyl neodecanoate, and then dried and impregnated with the impregnated solution.

At the same time, the atacticite is usually added for thickening and bulking, but in the present invention, it is added together with the fiber contained in the foamed concrete foam in order to improve the elongation and heat resistance.

The polybutene is added in order to enhance ultraviolet rays, heat and chemical stability to prevent deformation of the foamed concrete foam, and ensure lubrication.

Further, a mixture obtained by mixing the dichloroethane and methylene chloride at a weight ratio of 1: 1 is added for improving dimensional stability and sound absorption.

In addition, the hydroxyethyl celluloses are added to strengthen the crack resistance to prevent cracking of the concrete, thereby enhancing heat insulation and soundproofing.

In addition, the glycidyl neodecanoate is added as a transparent liquid material in order to enhance the lubricity and suppress the color development.

In order to evaluate the crack resistance at low temperatures, the toughness was calculated at -10 ° C and 20 ° C in order to confirm the bending test and crack resistance. As a result, The flexural strength was decreased, the strain and toughness were increased, and cracks were not generated.

In addition, when left in outside air and exposed to ultraviolet rays for 30 days, no discoloration occurred.

The base concrete foam thus prepared is molded into a block shape, and an adhesive is applied to the front and back surfaces of the foamed concrete foam. An iron plate having a thickness of 1.5-2 mm is adhered on the adhesive as shown in FIG. 4 to enhance durability, heat insulation and fire resistance.

At this time, in order to enhance adhesion and adherence of the steel sheet and the base concrete foam, the adhesive was mixed with 2.5 wt% of PEEK, 1.5 wt% of potassium silicate, 4.5 wt% of zirconia powder coated with octamethylcyclotetrasiloxane, 1.5% by weight of dimethylaminopyridine (DMAP), 0.5% by weight of cyanoacrylate, 2.5% by weight of ZnDTP (Diethylene Triamine Pentaacetic), 1.5% by weight of Phyllite powder and the remaining polyurethane resin.

Here, the PEEK (polyetheretherketone) is a thermoplastic high-performance plastic resin which is excellent in chemical resistance, water resistance and high-temperature stability and is added to provide excellent adhesion stability since it is a semi-crystalline resin that is insoluble in common solvents.

The above-mentioned potassium silicate is added as an inorganic substance to contribute not only to heat resistance but also to realizing condensation and consequently fungus repellency.

In addition, zirconia powder coated with octamethylcyclotetrasiloxane is added in order to minimize adhesive shrinkage by air flow to enhance adhesion stability, maximize adhesion, and improve adhesion.

In addition, DMAP (dimethylaminopyridine) is used by dissolving in toluene in order to accelerate the curing reaction and to strengthen hardening fixing force.

In addition, the cyanoacrylate is added to enhance adhesion stability while suppressing high thermal expansion and maximizing adhesive fixing force.

In addition, the ZnDTP is added to prevent catalyst poisoning.

The fillet powder has nanosized fine pores and is added to adsorb toxic substances because of its excellent physical adsorption ability and chemical cation exchange capacity.

In addition, the steel plate has a structure having an anchoring structure to cut off the peeling property and to have a plurality of holes formed by punching by a ramden punching method in order to increase the adhesion.

Particularly, aluminum is deposited to a thickness of 0.1-0.2 mu m on one surface of the iron plate to enhance heat resistance.

In order to confirm the characteristics of panel with foamed concrete reinforcing plate having such a structure, it was confirmed that surface peeling of steel plate occurred after 1000 blows twice per minute with a cylinder type impactor.

As a result, peeling did not occur. As a result, it was confirmed that the adhesion was very good.

In order to confirm the heat insulation characteristics, one side was illuminated and heat was applied to 35 ° C while the temperature was observed with an infrared thermometer on the other side. This observation experiment was carried out over 6 hours.

Observation experiments showed that the temperature change of the infrared thermometer was 0.5 ℃ higher than that before heat application. As a result, it was confirmed that there is a thermal property.

Claims (1)

The cement additive was prepared by mixing portland cement having a weight ratio of 1: 2.44 with respect to water, ultrafast cement having a weight ratio of 1: 0.271 with a weight ratio of 1: 0.542 , Hydrogen peroxide having a weight ratio of 1: 0.213, lithium carbonate having a weight ratio of 1: 0.0030, calcium having a weight ratio of 1: 0.027, fibers having a weight ratio of 1: 0.008, and calcium carbonate having a weight ratio of 1: 0.0818 , Carbon having a weight ratio of 1: 0.182, polymer having a weight ratio of 1: 0.0164, silica fume having a weight ratio of 1: 0.016, a water reducing agent having a weight ratio of 1: A molded product obtained by molding the lightweight foamed cement composition so as to have a block shape is composed of 20% by weight of atfullite, 10% by weight of polybutene, 1% by weight of dichlo- etane and methylene chloride, : 1 by weight ratio 10% by weight of a mixed mixture, 15% by weight of hydroxyethylcellulose, and the remaining glycidyl neodecanoate, followed by drying the impregnated foamed concrete foam;
An adhesive applied to upper and lower surfaces of the foamed concrete foam;
And an iron plate bonded and fixed to the upper and lower surfaces of the foamed concrete foam through the adhesive,
Wherein the steel plate is punched by a random punching method to have an adhesive anchorable structure, and aluminum is deposited on the non-adhesive surface of the steel plate to a thickness of 0.1-0.2 mu m.

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