KR102130477B1 - Waterproof organic-inorganic complex composition for concrete structure and waterproofing method of concrete structure therewith - Google Patents

Abstract

The present invention relates to an organic-inorganic complex composition for waterproofing a concrete structure and a method of waterproofing a concrete structure by using the same, in which the organic-inorganic complex composition has an excellent water resistance, an excellent chemical resistance, an excellent acid resistance, excellent durability, an excellent salt resistance, and excellent strength. According to the present invention, the organic-inorganic complex composition for waterproofing the concrete structure includes: an inorganic binder; and an organic-based performance improvement admixture.

Description

Water-proof organic-inorganic complex composition for concrete structure and waterproofing method of concrete structure therewith}

The present invention is an organic-inorganic composite composition for waterproofing a concrete structure, which has excellent properties such as water resistance, chemical resistance, acid resistance, durability, salt resistance, and strength, including an inorganic binder and an organic performance improving admixture to waterproof a concrete structure, and using the same It relates to the waterproofing method of concrete structures.

In general, leaks and condensation due to cracks occur in the base of inorganic materials such as concrete or mortar forming civil construction structures, and these problems weaken the durability of the building and promote the aging of the building. Therefore, as a new product that can prevent the occurrence of such defects, the elasticity of the waterproofing layer is imparted to prevent leakage due to the breakage of the waterproofing film, and cracks and ruptures of the coating are caused by the structure's hair crack. There is a need for a new concept of waterproof coating film that does not.

In order to eliminate the cause of defects in such a concrete structure, the external waterproofing is generally used by the sheet waterproofing method or the waterproofing method using a waterproofing sheet. The advantages and disadvantages of the conventional waterproofing method are as follows.

The synthetic polymer sheet waterproofing method has the advantage of being easy to construct because it uses a synthetic polymer sheet, but it is easy to be damaged due to its thinness, and there is also a problem in water tightness. In addition, the improved asphalt sheet waterproofing method is applied for underground waterproofing because it can secure watertightness through some training because it attaches the improved asphalt sheet with a burner, but there is a problem that requires maintenance such as qualification certification of skilled contractors. In addition, as the sheet waterproofing material, polyethylene, soft ethylcellulose, ethylene vinyl acetate copolymer, synthetic rubber or the like may be used as a superimposed or bonded sheet, but overall, the sheet waterproofing material has very low adhesion to concrete. There are problems, such as a problem that a defect is likely to occur in the sheet joint and impairs the waterproof function. As for the asphalt coating waterproofing method, there is a joint, but if 3 to 4 roofings are overlapped with each other, there is less risk of water permeation and there is less risk of damaging the waterproof layer, but the risk of high temperature molten asphalt construction when constructing on high wall surfaces There is, there is a problem that there is not a lot of skilled technicians can not expect the certainty of the waterproof because it is easy to create a water path during the curing process of the molten asphalt. The liquid-waterproofing method has the advantage of being able to be used on the basis of its behavior due to its low number of process, simple construction, constant thickness of the waterproofing layer, and elongation and crack resistance, so that it can be used on the basis of behavior. It is difficult to find the cause of the leak, and it is insulated from the sphere, so swelling and rupture occur well, and there is a problem in that degassing device is required because it is not breathable, and deterioration is easily caused by ultraviolet rays. In addition, the waterproofing method using a thermosetting resin such as urethane or epoxy has good elasticity, can withstand cracks of less than 1 mm, and has excellent adhesion to the base surface, but when the moisture of the base surface is 8% or more Poor adhesion may occur, swelling occurs, and there is a problem that the curing time is long and the flowability of the vertical portion is large.

On the other hand, penetration-type waterproofing materials that are generally used at home and abroad are made of alkali-based silicates. Even if the surface tension is small, the alkali-based silicate rapidly reacts with calcium ion, which is a main component of concrete, to form calcium silicate. The calcium silicate protects the surface of the concrete with an insoluble and chemically stable oxide, but has a problem in that it cannot penetrate into the concrete because it has a penetration force of only a few millimeters, which makes it difficult to recover the performance of the concrete structure.

Republic of Korea Registered Patent No. 10-1615916 Republic of Korea Registered Patent No. 10-1645510

The technical problem to be achieved by the present invention is to provide a composite composition for waterproofing a concrete structure having excellent penetration properties and excellent properties such as water resistance, chemical resistance, acid resistance, durability, salt resistance and strength when repairing a concrete structure.

Another technical problem to be achieved by the present invention is to provide a waterproofing method of a concrete structure using an organic-inorganic composite composition for waterproofing the concrete structure.

In one embodiment of the present invention, in an organic-inorganic composite composition for waterproofing a concrete structure for waterproofing a concrete structure, 60 to 70% by weight of an inorganic binder and 30 to 40% by weight of an organic performance improving admixture, the inorganic binder is also powder With respect to 100 parts by weight of fly ash of 2,000 to 5,000 cm ² /g, 5 to 60 parts by weight of aluminum hydroxide, 0.1 to 35 parts by weight of sodium carbonate, 0.1 to 30 parts by weight of titanium oxide, 0.01 to 20 parts by weight of sepiolite, bauxite 0.01 to 20 parts by weight and 0.01 to 20 parts by weight of metakaolin, and the organic performance improving admixture is 5 to 40 parts by weight of isophorone diamine, 1 to 20 of tetrabutylammonium hyaluronic acid, based on 100 parts by weight of an acrylic-epoxy copolymer. Parts by weight, 1 to 20 parts by weight of mono-tert-butylhydroquinone, 1 to 20 parts by weight of N-vinylpyrrolidone, 0.1 to 5 parts by weight of n-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane , 0.1 to 35 parts by weight of methyl methacrylate-butadiene copolymer, 0.1 to 35 parts by weight of polyacrylic acid, 0.1 to 35 parts by weight of sulfonate (C1-6 alkyl) ester, and 0.1 to 35 parts by weight of pigment, the acrylic- The epoxy copolymer has an epoxy equivalent of 150 to 3000 g/eq, an acrylic-epoxy copolymer having a weight average molecular weight (Mw) of 300 to 1,000, and 90 to 95% by weight, and an acrylic having a weight average molecular weight (Mw) of 10,000 to 300,000. -Provides an organic-inorganic composite composition for waterproofing concrete structures, which is a mixture of 5 to 10% by weight of an epoxy copolymer.

The inorganic binder further comprises 5 to 20 parts by weight of barium sulfate, based on 100 parts by weight of the fly ash of 2,000 to 5,000 cm ² /g of the powder; 4,4'-butylidenebis (3-methyl-6-t-butylphenol) is further comprising 0.01 to 5 parts by weight; The organic performance improving admixture further comprises 0.01 to 20 parts by weight of 2-phosphonobutane-1,2,4-tricarboxylic acid with respect to 100 parts by weight of the acrylic-epoxy copolymer; Further comprising 0.01 to 10 parts by weight of at least one viscosity modifier selected from the group consisting of benzyl methacrylate, dipentyl malate, and mixtures thereof; Further comprising 0.01 to 20 parts by weight of at least one organic solvent selected from the group consisting of tetramethylbenzene, dipropylene glycol monomethyl ether acetate and mixtures thereof; Further comprising 0.01 to 10 parts by weight of N-methylethanesulfonamide; Further comprising 0.01 to 10 parts by weight of an antifoaming agent; The water reducing agent may further include 0.01 to 10 parts by weight.

Another embodiment of the present invention is a waterproofing method of a concrete structure using an organic-inorganic composite composition for waterproofing a concrete structure according to an embodiment of the present invention, the impurity, ray tans and deterioration sites of the concrete structure are planers, grinders, short blasters Or removing with a grinder, cleaning the removed part with a water jet or high-pressure sprinkler and cleaning with a vacuum inhaler; Applying a primer to the surface to strengthen the surface layer and improve adhesion; A step of first applying the organic/inorganic composite composition for waterproofing the concrete structure to the upper part of the site where the primer is applied, followed by curing, and then applying the organic/inorganic composite composition for waterproofing the concrete structure a second time; And it provides a waterproofing method of a concrete structure comprising the step of applying a top coating agent to improve the waterproof, abrasion resistance and anti-fouling properties on the upper portion of the concrete structure waterproof organic-inorganic composite composition is applied.

The primer, acrylic, ethyl vinyl acetate (Ethyl Vinyl Acetate; EVA) and styrene-butadiene rubber (Styrene Butadiene Rubber; SBR) and the organic-based performance to facilitate the adhesion of the concrete structure waterproofing organic-inorganic composite composition to the concrete structure At least one selected from the improved admixture may be used, and the top coating agent may be at least one selected from an aqueous silica sol-based, epoxy, urethane and the functional improvement admixture.

According to an embodiment of the present invention, when repairing a concrete structure, it is possible to obtain an organic/inorganic composite composition for waterproofing a concrete structure having excellent penetration and excellent properties such as water resistance, chemical resistance, acid resistance, durability, salt resistance, and strength.

In particular, the organic/inorganic composite composition for waterproofing a concrete structure according to an embodiment of the present invention has excellent watertightness to protect a sphere, and has a ventilation function, so that defects such as lifting or peeling do not occur even after a long time, It has an antimicrobial function that inhibits microbial growth, and has the effect of stably managing the water quality of the water passing through the waterproofed part with an organic/inorganic composite composition for waterproofing a concrete structure according to an embodiment of the present invention.

Concrete structures and waterproof concrete structures, rooftops, apartment balconies, underground parking lots, outdoor parking lots, bridges, etc. In case of waterproofing, it can induce a contraction/expansion due to temperature, humidity, etc., so that it can be integrated with existing concrete structures. Therefore, it exhibits an excellent effect of neutralizing by chloride or carbon dioxide, water resistance, weather resistance, and freezing resistance in addition to the blocking effect of moisture.

In addition, the conventional epoxy, urethane, urea, etc., the composition for waterproofing the thermosetting has a problem that the construction period is delayed because the coating surface must be completely dried, but the waterproofing of the concrete structure using the organic/inorganic composite composition for waterproofing the concrete structure according to one embodiment of the present invention According to the construction method, it is possible to apply even in a wet state, so that the construction period can be shortened, and it is economical and easy to repair, thereby reducing maintenance costs.

Hereinafter, preferred embodiments according to the present invention will be described in detail. However, the following embodiments are provided to those of ordinary skill in the art to fully understand the present invention and may be modified in various other forms, and the scope of the present invention is limited to the embodiments described below. It does not work.

An organic-inorganic composite composition for waterproofing a concrete structure for waterproofing a concrete structure according to one embodiment of the present invention includes 60 to 70% by weight of an inorganic binder and 30 to 40% by weight of an organic performance improving admixture.

The inorganic binder is 5 to 60 parts by weight of aluminum hydroxide, 0.1 to 35 parts by weight of sodium carbonate, 0.1 to 30 parts by weight of titanium oxide, and 0.01 to Sepiolite based on 100 parts by weight of fly ash having a powder of 2,000 to 5,000 cm ² /g. 20 parts by weight, 0.01-20 parts by weight of bauxite and 0.01-20 parts by weight of metakaolin.

In addition, the inorganic binder may further include 5 to 20 parts by weight of barium sulfate, relative to 100 parts by weight of the fly ash of 2,000 to 5,000 cm ² /g of the powder.

In addition, the inorganic binder is 0.01 to 5% by weight of 4,4'-butylidenebis(3-methyl-6-t-butylphenol) with respect to 100 parts by weight of the fly ash of 2,000 to 5,000 cm ² /g of the powder. It may further include wealth.

Meanwhile, the organic performance improving admixture is based on 100 parts by weight of the acrylic-epoxy copolymer, 5 to 40 parts by weight of isophorone diamine, 1 to 20 parts by weight of tetrabutylammonium hyaluronate, and 1 to 20 parts by weight of mono-tert-butyl hydroquinone Parts, 1 to 20 parts by weight of N-vinylpyrrolidone, 0.1 to 5 parts by weight of n-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane, 0.1 to 35 parts by weight of methyl methacrylate-butadiene copolymer , 0.1 to 35 parts by weight of polyacrylic acid, 0.1 to 35 parts by weight of sulfonate (C1-6 alkyl) ester, and 0.1 to 35 parts by weight of pigment.

In addition, the acrylic-epoxy copolymer has an epoxy equivalent of 150 to 3000 g/eq, an acrylic-epoxy copolymer having a weight average molecular weight (Mw) of 300 to 1,000, and 90 to 95% by weight, and a weight average molecular weight (Mw) of A mixture of 5 to 10% by weight of an acrylic-epoxy copolymer of 10,000 to 300,000 is used.

The organic performance improving admixture may further include 0.01 to 20 parts by weight of 2-phosphonobutane-1,2,4-tricarboxylic acid based on 100 parts by weight of the acrylic-epoxy copolymer.

The organic performance improving admixture may further include 0.01 to 10 parts by weight of one or more viscosity modifiers selected from the group consisting of benzyl methacrylate, dipentyl malate, and mixtures thereof, based on 100 parts by weight of the acrylic-epoxy copolymer. have.

The organic performance improving admixture is 0.01 to 20 parts by weight of at least one organic solvent selected from the group consisting of tetramethylbenzene, dipropylene glycol monomethyl ether acetate, and mixtures thereof, based on 100 parts by weight of the acrylic-epoxy copolymer. It can contain.

The organic performance improving admixture may further include 0.01 to 10 parts by weight of N-methylethanesulfonamide relative to 100 parts by weight of the acrylic-epoxy copolymer.

The organic performance improving admixture may further include 0.01 to 10 parts by weight of an antifoaming agent based on 100 parts by weight of the acrylic-epoxy copolymer.

The organic performance improving admixture may further include 0.01 to 10 parts by weight of a water reducing agent relative to 100 parts by weight of the acrylic-epoxy copolymer.

As a result, the organic/inorganic composite composition for waterproofing a concrete structure according to an embodiment of the present invention has improved penetration and watertight properties, and has improved water resistance and water resistance, as well as durability, weather resistance and strength. . In addition, the organic/inorganic composite composition for waterproofing a concrete structure according to one embodiment of the present invention has improved chemical resistance, acid resistance and salt resistance, and has excellent effects of neutralization and chloride melting resistance by chloride or carbon dioxide. In addition, by imparting air permeability, defects such as exfoliation and peeling do not occur even after a long period of time, and have an excellent antibacterial function to suppress microbial growth.

The fly ash contained in the inorganic binder of the present invention is mixed with other components of the inorganic binder to improve strong adsorption power, long-term strength, dry shrinkage, and durability. The fly ash may further improve the above-described effect by using a powder having a 2,000 to 5,000 cm ² /g.

The aluminum hydroxide may be mixed with other components of the inorganic binder to improve flame retardancy and durability. The aluminum hydroxide is preferably included in 5 to 60 parts by weight based on 100 parts by weight of the fly ash. If the content of the aluminum hydroxide is too much than the above-mentioned content range, the above-described performance may be improved, but workability may be deteriorated, and if it is too less than the above-described content range, the performance improvement effect is insufficient.

The sodium carbonate is mixed with the other components of the inorganic binder, it is possible to prevent the penetration of water or harmful substances at the crack site and improve the waterproof function and corrosion resistance. The sodium carbonate is preferably included in 0.1 to 35 parts by weight based on 100 parts by weight of the fly ash. If the content of the sodium carbonate is too large than the above-described content range, the above-described performance is improved, but the price competitiveness may be deteriorated or workability may be deteriorated. If the content is too small, the performance-improving effect is insufficient.

Since the titanium oxide has excellent light reflectivity in the infrared region, it exhibits excellent efficacy in suppressing the temperature rise of the road surface, and is mixed with other components of the inorganic binder to improve antiseptic and antibacterial effects. The titanium oxide is preferably included in 0.1 to 30 parts by weight based on 100 parts by weight of the fly ash. If the content of the titanium oxide is too large than the above-mentioned content range, the above-described performance may be improved, but workability may be deteriorated, and if it is too small than the above-described content range, the performance improvement effect is insufficient.

The sepiolite is a hygroscopic agent that is used to prevent foaming by absorbing moisture of the organic performance improving admixture upon curing. In addition, it can be mixed with other components of the inorganic binder to improve water resistance, chemical resistance, acid resistance and salt resistance. In addition, strong adsorption power and far-infrared rays are emitted to have a bioactive effect, and to deodorize and impart antibacterial performance. The sepiolite is preferably included in 0.01 to 20 parts by weight based on 100 parts by weight of the fly ash. If the content of the sepiolite is too large than the above-described content range, the above-described performance may be improved, but workability may be deteriorated.

The bauxite is mixed with other components of the inorganic binder to improve strength, abrasion resistance and fire resistance. The bauxite is preferably included in 0.01 to 20 parts by weight based on 100 parts by weight of the fly ash. If the content of the bauxite is too much than the above-mentioned content range, the above-described performance may be improved, but the price competitiveness may be lowered, and if it is too less than the above-mentioned content range, the performance improvement effect is insufficient.

The metakaolin may be mixed with other components of the inorganic binder to induce long-term strength enhancement, improve durability, improve dispersibility, and improve workability. The metakaolin is preferably contained in 0.01 to 20 parts by weight based on 100 parts by weight of the fly ash. If the content of the metakaolin is too much than the above-mentioned content range, the workability may be deteriorated, and if it is too less than the above-mentioned content range, the performance improvement effect is insufficient.

In addition, the inorganic binder may be further mixed with other components of the inorganic binder to further improve abrasion resistance, durability, filling effect and thickening effect, barium sulfate. The barium sulfate is preferably included in 5 to 20 parts by weight based on 100 parts by weight of the fly ash of 2,000 to 5,000 cm ² /g of the powder. If the content of the barium sulfate is too much than the above-mentioned content range, the above-described performance may be improved, but workability may be deteriorated, and if it is too less than the above-mentioned content range, the performance improvement effect is insufficient.

In addition, the inorganic binder is mixed with other components of the inorganic binder, 4,4'-butylidenebis (3-methyl-6-t-butylphenol), in order to further prevent oxidation and flame retardancy. It may further include. The 4,4'-butylidenebis (3-methyl-6-t-butylphenol) is contained in 0.01 to 5 parts by weight based on 100 parts by weight of the fly ash of 2,000 to 5,000 cm ² /g. It is preferred. If the content of the 4,4'-butylidenebis(3-methyl-6-t-butylphenol) is too much than the above-mentioned content range, the manufacturing cost may be high and it may not be economical. The performance improvement effect is insufficient.

The organic-based performance-improving admixture of the present invention is used to improve pot life, workability, strength, elasticity, high flow performance, and durability, and can induce bonding between the inorganic binders and improve strength and durability.

In addition, the acrylic-epoxy copolymer included in the organic performance improving admixture of the present invention can be mixed with other components of the organic performance improving admixture to improve strength, waterproofness, durability and weather resistance. Particularly, the acrylic-epoxy copolymer has an epoxy equivalent of 150 to 3000 g/eq, an acrylic-epoxy copolymer having a weight average molecular weight (Mw) of 300 to 1,000, and 90 to 95% by weight, and a weight average molecular weight (Mw). Watertightness can be remarkably improved by using a mixture of 5 to 10% by weight of an acrylic-epoxy copolymer of 10,000 to 300,000. Thus, it is possible to further improve the waterproof performance described above.

The isophorone diamine is mixed with other components of the organic performance improving admixture to improve reactivity to promote curing. The isophorone diamine is preferably included in 5 to 40 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the isophorone diamine is too large than the above-mentioned content range, the strength may be lowered, and if it is too small than the above-mentioned content range, the performance improvement effect is insufficient.

The tetrabutylammonium hyaluronate is mixed with other components when polymerizing the components of the organic performance-improving admixture to facilitate viscosity control and improve adhesion strength. In addition, there is an effect that can greatly improve the chemical resistance. The tetrabutylammonium hyaluronic acid is preferably included in 1 to 20 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the tetrabutylammonium hyaluronic acid is too much than the above-mentioned content range, a material separation phenomenon may occur, and if it is too less than the above-mentioned content range, the performance improvement effect is insufficient.

When mono-tert-butyl hydroquinone polymerizes the components of the organic performance improving admixture, it is mixed with other components, and serves to prevent a rapid polymerization reaction from occurring. The mono-tert-butyl hydroquinone is preferably included in 1 to 20 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the mono-tert-butyl hydroquinone is too large than the above-described content range, the polymerization reaction may be prevented to deteriorate the effect of the present invention. If the content of the mono-tert-butyl hydroquinone is too small, the performance improvement effect may be insufficient.

The N-vinylpyrrolidone is mixed with other components of the organic performance improving admixture to stably disperse and absorb and swell moisture to maintain a waterproof layer stably. The N-vinylpyrrolidone is preferably included in 1 to 20 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the N-vinylpyrrolidone is too much than the above-mentioned content range, a material separation phenomenon may occur, and if it is too less than the above-mentioned content range, the performance improvement effect is insufficient.

The n-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane is mixed with other components of the organic performance improving admixture to easily penetrate the concrete structure and improve water repellency inside the concrete structure. It plays a role to help. The n-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane is preferably included in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the n-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane is too much than the above-mentioned content range, the strength may be lowered, and if it is too less than the above-mentioned content range, the performance improvement effect is insufficient. do.

The methyl methacrylate-butadiene copolymer may be mixed with other components of the organic performance improving admixture to improve strength and durability. The methyl methacrylate-butadiene copolymer is preferably included in 0.1 to 35 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the methyl methacrylate-butadiene copolymer is too large than the above-described content range, brittleness may occur and impact strength may be lowered. If the content of the methylmethacrylate-butadiene copolymer is too low, the performance improvement effect is insufficient.

The polyacrylic acid is mixed with other components of the organic performance improving admixture to facilitate viscosity control and improve adhesion strength. The polyacrylic acid may further improve the above-described effect by using a weight average molecular weight (Mw) of 500 to 5000. The polyacrylic acid is preferably included in 0.1 to 35 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the polyacrylic acid is too much than the above-mentioned content range, the adhesive strength is improved, but the viscosity is high, so that workability may be deteriorated, and if it is too less than the above-described content range, material separation may occur.

The sulfonate (C1-6 alkyl) ester is mixed with other components of the organic performance improving admixture to prevent tangle of each component and improve dispersibility. The sulfonate (C1-6 alkyl) ester is preferably included in 0.1 to 35 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the sulfonate (C1-6 alkyl) ester is too much than the above-mentioned content range, stability is improved, but material separation may occur, and if it is too less than the above-mentioned content range, the performance improvement effect is insufficient.

The pigment may be a pigment that reflects infrared rays to produce a color desired by the consumer. The pigment may further improve miscibility with other components of the organic performance improving admixture by using a mica-type iron oxide pigment. The pigment is preferably included in 0.1 to 35 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the pigment is too large than the above-mentioned content range, the price competitiveness may be lowered, and if it is too small than the above-described content range, the performance improvement effect is insufficient.

In addition, the organic performance-improving admixture is mixed with other components to suppress the phenomenon of oxidation of organic or inorganic ions generated in the concrete structure to prevent discoloration of the concrete structure, 2-phosphonobutane-1, It may further include 2,4-tricarboxylic acid. The 2-phosphonobutane-1,2,4-tricarboxylic acid is preferably included in 0.01 to 20 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the 2-phosphonobutane-1,2,4-tricarboxylic acid is too much than the above-mentioned content range, water-repellent and waterproof properties may be impaired, and if it is too less than the above-described content range, the performance improvement effect is obtained. Will be insufficient.

In addition, the organic performance-improving admixture is mixed with other ingredients to reduce viscosity and improve workability, by using at least one viscosity modifier selected from the group consisting of benzyl methacrylate, dipentyl malate, and mixtures thereof. It may further include. The viscosity modifier may be used by mixing benzyl methacrylate and dipentyl malate in a ratio of 1: 1 to 2 by weight, thereby improving workability more easily. The viscosity control agent is preferably included in 0.01 to 10 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the viscosity modifier is too large than the above-described content range, the viscosity may be too low to sufficiently exert the effects of the present invention, and if it is too small than the above-described content range, the performance improvement effect is insufficient.

In addition, the organic performance-improving admixture is selected from the group consisting of tetramethylbenzene, dipropylene glycol monomethyl ether acetate and mixtures thereof in order to improve miscibility with other components and impart easier workability. It may further include a species of organic solvent. The organic solvent is a mixture of tetramethylbenzene and dipropylene glycol monomethyl ether acetate in a ratio of 1: 1 by weight, it is possible to more easily improve the workability. The organic solvent is preferably included in 0.01 to 20 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the organic solvent is too much than the above-mentioned content range, the concentration may be too low to sufficiently exert the effects of the present invention, and if it is too less than the above-described content range, the performance improvement effect is insufficient.

In addition, the organic-based performance improving admixture may further include N-methylethanesulfonamide to improve miscibility with other components, impart easier workability, and improve remarkable adhesion properties. It is preferable that the N-methylethanesulfonamide is contained in 0.01 to 10 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the N-methylethanesulfonamide is too much than the above-mentioned content range, the adhesive properties and workability may be rather deteriorated, and if it is too less than the above-mentioned content range, the performance improvement effect is insufficient.

In addition, the organic performance-improving admixture may further include an antifoaming agent so as to improve the strength and durability by removing air bubbles generated while being mixed with other components, and improve the workability and pot life by imparting an air entraining effect. have. As such an antifoaming agent, an alcohol antifoaming agent, a silicone antifoaming agent, a fatty acid antifoaming agent, an oil antifoaming agent, an ester antifoaming agent, an oxyalkylene antifoaming agent, etc. can be used. As the alcohol-based antifoaming agent, glycol or the like may be used. As the silicone-based antifoaming agent, dimethylsilicone oil, polyorganosiloxane, or fluorosilicone oil may be used. As the fatty acid-based antifoaming agent, stearic acid or oleic acid may be used. As the oil-based antifoaming agent, kerosene, animal or vegetable oil, castor oil, or the like may be used. As the ester-based antifoaming agent, solitol trioleate, glycerol monoricinolate, or the like can be used. As the oxyalkylene-based antifoaming agent, polyoxyalkylene, acetylene ethers, polyoxyalkylene fatty acid ester, polyoxyalkylene alkylamine, or the like can be used. The antifoaming agent is preferably included in 0.01 to 10 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the antifoaming agent is too large than the above-mentioned content range, strength and workability may be deteriorated, and if it is too small than the above-mentioned content range, the performance improvement effect is insufficient.

In addition, the organic performance improving admixture may be mixed with other components to further reduce water:cement ratio to improve strength and durability, and further include a water reducing agent to secure fluidity. The water reducing agent may be one or more water reducing agents selected from the group consisting of polycarboxylic acid-based, melamine-based, naphthalene-based, and mixtures thereof. More preferably, the above effect can be further improved by using a polycarboxylic acid-based water reducing agent. The water reducing agent is preferably included in 0.01 to 10 parts by weight based on 100 parts by weight of the acrylic-epoxy copolymer. If the content of the water reducing agent is too much than the above-mentioned content range, the strength may be lowered, and if it is too less than the above-mentioned content range, the performance improvement effect is insufficient.

The organic-inorganic composite composition for waterproofing a concrete structure according to one embodiment of the present invention may be prepared by mixing 60 to 70 wt% of the inorganic binder and 30 to 40 wt% of the organic performance improving admixture, and mixing for 30 seconds to 3 minutes. have.

In addition, another embodiment of the present invention is a waterproofing method of a concrete structure using an organic/inorganic composite composition for waterproofing a concrete structure according to one embodiment of the present invention, a planer, a grinder for impurities, ray tans, and deterioration of a concrete structure, Removing with a shot blaster or a grinder, cleaning the removed part with a water jet or a high-pressure sprinkler and cleaning with a vacuum inhaler; Applying a primer to the surface to strengthen the surface layer and improve adhesion; A step of first applying the organic/inorganic composite composition for waterproofing the concrete structure to the upper part of the site where the primer is applied, followed by curing, and then applying the organic/inorganic composite composition for waterproofing the concrete structure a second time; And it provides a waterproofing method of a concrete structure comprising the step of applying a top coating agent to improve the waterproof, abrasion resistance and anti-fouling properties on the upper portion of the concrete structure waterproof organic-inorganic composite composition is applied.

The waterproofing method of the concrete structure may further include repairing the cracked portion using a superhard putty or epoxy putty when a cracked portion occurs after the cleaning step.

In addition, the waterproofing method of the concrete structure may further include a base surface treatment step of repairing a cross-section using a polymer cement mortar when the deterioration site is severe after the cleaning step.

The primer, acrylic, ethyl vinyl acetate (Ethyl Vinyl Acetate; EVA) and styrene-butadiene rubber (Styrene Butadiene Rubber; SBR) and the organic-based performance to facilitate the adhesion of the concrete structure waterproofing organic-inorganic composite composition to the concrete structure At least any one selected from improved admixtures may be used.

In addition, the top coating agent may be an aqueous silica sol-based, epoxy, urethane, and at least one selected from the functional improvement admixture.

According to an embodiment of the present invention, when repairing a concrete structure, it is possible to obtain an organic/inorganic composite composition for waterproofing a concrete structure having excellent penetration and excellent properties such as water resistance, chemical resistance, acid resistance, durability, salt resistance, and strength.

In particular, the organic/inorganic composite composition for waterproofing a concrete structure according to an embodiment of the present invention has excellent watertightness to protect a sphere, and has a ventilation function, so that defects such as lifting or peeling do not occur even after a long time, It has an antimicrobial function that inhibits microbial growth, and has the effect of stably managing the water quality of the water passing through the waterproofed part with an organic-inorganic/inorganic composite composition for waterproofing a concrete structure according to an embodiment of the present invention.

Concrete structures and waterproof concrete structures, rooftops, apartment balconies, underground parking lots, outdoor parking lots, bridges, etc. In case of waterproofing, it can induce a contraction/expansion due to temperature, humidity, etc., so that it can be integrated with existing concrete structures. Therefore, it exhibits an excellent effect of neutralizing by chloride or carbon dioxide, water resistance, weather resistance, and freezing resistance in addition to the blocking effect of moisture.

In addition, the conventional epoxy, urethane, urea, etc., the composition for waterproofing the thermosetting has a problem that the construction period is delayed because the coating surface must be completely dried, but the waterproofing of the concrete structure using the organic/inorganic composite composition for waterproofing the concrete structure according to one embodiment of the present invention According to the construction method, it is possible to apply even in a wet state, so that the construction period can be shortened, and it is economical and easy to repair, thereby reducing maintenance costs.

Hereinafter, the configuration and effect of the present invention will be described in more detail through examples. However, it is apparent to those skilled in the art that the present invention is not limited to these examples.

<Example 1>

An organic-inorganic composite composition for waterproofing a concrete structure was prepared by mixing 60% by weight of an inorganic binder and 40% by weight of an organic performance improving admixture in a forced mixer for 2 minutes.

In this case, the inorganic binder is 100 parts by weight of fly ash having a powder of about 2,350 cm ² /g, 20 parts by weight of aluminum hydroxide, 15 parts by weight of sodium carbonate, 25 parts by weight of titanium oxide, 15 parts by weight of sepiolite, and 15 parts by weight of bauxite And 15 parts by weight of metakaolin.

In addition, the organic performance-improving admixture is acrylic in which 90% by weight of an acrylic-epoxy copolymer having a weight average molecular weight (Mw) of about 577 and 10% by weight of an acrylic-epoxy copolymer having a weight average molecular weight (Mw) of about 51,850. -As an epoxy copolymer, 100 parts by weight of the acrylic-epoxy copolymer having an epoxy equivalent of 290 g/eq, 40 parts by weight of isophorone diamine, 8 parts by weight of tetrabutylammonium hyaluronate, 18 parts by weight of mono-tert-butylhydroquinone, 15 parts by weight of N-vinylpyrrolidone, 5 parts by weight of n-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane, 30 parts by weight of methyl methacrylate-butadiene copolymer, 15 parts by weight of polyacrylic acid, sulfo Nate (butyl) ester 22 parts by weight, pigment 17 parts by weight, 2-phosphonobutane-1,2,4-tricarboxylic acid 5 parts by weight, benzyl methacrylate 5 parts by weight, tetramethylbenzene 2 parts by weight, di 2 parts by weight of propylene glycol monomethyl ether acetate, 1 part by weight of N-methylethanesulfonamide, 2 parts by weight of a silicone antifoaming agent, and 2 parts by weight of a polycarboxylic acid water reducing agent were used.

<Example 2>

An organic-inorganic composite composition for waterproofing a concrete structure was prepared by mixing 70% by weight of an inorganic binder and 30% by weight of an organic performance improving admixture in a forced mixer for 2 minutes.

In this case, the inorganic binder is 100 parts by weight of fly ash having a powder of about 2,350 cm ² /g, 5 parts by weight of aluminum hydroxide, 35 parts by weight of sodium carbonate, 5 parts by weight of titanium oxide, 7 parts by weight of sepiolite, and 8 parts by weight of bauxite And metakaolin 12 parts by weight.

In addition, the organic performance-improving admixture is acrylic in which 90% by weight of an acrylic-epoxy copolymer having a weight average molecular weight (Mw) of about 577 and 10% by weight of an acrylic-epoxy copolymer having a weight average molecular weight (Mw) of about 51,850. -As an epoxy copolymer, 100 parts by weight of the acrylic-epoxy copolymer having an epoxy equivalent of 290 g/eq, 12 parts by weight of isophorone diamine, 10 parts by weight of tetrabutylammonium hyaluronate, 2 parts by weight of mono-tert-butyl hydroquinone, 8 parts by weight of N-vinylpyrrolidone, 2 parts by weight of n-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane, 7 parts by weight of methyl methacrylate-butadiene copolymer, 22 parts by weight of polyacrylic acid, sulfo Nate (butyl) ester 4 parts by weight, pigment 9 parts by weight, 2-phosphonobutane-1,2,4-tricarboxylic acid 12 parts by weight, benzyl methacrylate 1 part by weight, dipentyl malate 1 part by weight, tetra 1 part by weight of methylbenzene, 1 part by weight of dipropylene glycol monomethyl ether acetate, 0.5 part by weight of N-methylethanesulfonamide, 5 parts by weight of silicone antifoaming agent and 5 parts by weight of polycarboxylic acid water reducing agent were used.

<Example 3>

An organic-inorganic composite composition for waterproofing a concrete structure was prepared by mixing 60% by weight of an inorganic binder and 40% by weight of an organic performance improving admixture in a forced mixer for 2 minutes.

At this time, the inorganic binder is 100 parts by weight of fly ash of about 2,350 cm ² /g, 7 parts by weight of aluminum hydroxide, 5 parts by weight of sodium carbonate, 0.5 parts by weight of titanium oxide, 15 parts by weight of sepiolite, 5 parts by weight of bauxite , 7 parts by weight of metakaolin, 5 parts by weight of barium sulfate and 1 part by weight of 4,4'-butylidenebis(3-methyl-6-t-butylphenol) were used.

In addition, the organic performance-improving admixture is acrylic in which 90% by weight of an acrylic-epoxy copolymer having a weight average molecular weight (Mw) of about 577 and 10% by weight of an acrylic-epoxy copolymer having a weight average molecular weight (Mw) of about 51,850. -As an epoxy copolymer, 100 parts by weight of the acrylic-epoxy copolymer having an epoxy equivalent of 290 g/eq, 12 parts by weight of isophorone diamine, 15 parts by weight of tetrabutylammonium hyaluronate, 12 parts by weight of mono-tert-butyl hydroquinone, 9 parts by weight of N-vinylpyrrolidone, 1 part by weight of n-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane, 18 parts by weight of methyl methacrylate-butadiene copolymer, 25 parts by weight of polyacrylic acid, sulfo Nate (butyl) ester 14 parts by weight, pigment 9 parts by weight, 2-phosphonobutane-1,2,4-tricarboxylic acid 8 parts by weight, benzyl methacrylate 1 part by weight, dipentyl malate 2 parts by weight, tetra 1 part by weight of methylbenzene, 1 part by weight of dipropylene glycol monomethyl ether acetate, 2 parts by weight of N-methylethanesulfonamide, 5 parts by weight of silicone antifoaming agent and 5 parts by weight of polycarboxylic acid water reducing agent were used.

In order to more easily grasp the characteristics of Examples 1 to 3 above, comparative examples that can be compared with the examples of the present invention are presented.

<Comparative Example 1>

The composition was prepared by mixing 60% by weight of calcium carbonate and 40% by weight of the acrylic-epoxy copolymer in a forced mixer for 2 minutes.

The present invention is described in more detail with reference to the following experimental examples, which are not intended to limit the invention.

<Test Example 1> adhesion strength test

To compare the adhesion strength properties of the organic/inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3 and the composition prepared in Comparative Example 1, an adhesion strength test was performed by KS F 4919 (cement-incorporated polymer waterproofing material). , The results are shown in Table 1 below.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Bond strength
(N/mm ² ) Standard 1.2 1.3 1.45 1.0 After immersion 1.1 1.1 1.2 0.9

As shown in Table 1, the organic/inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3 exhibited very high adhesion performance than the compositions prepared in Comparative Example 1.

<Test Example 2> Fracture resistance

For the concrete organic/inorganic composite composition for waterproofing the concrete structures prepared in Examples 1 to 3 and the composition prepared in Comparative Example 1, the crack resistance according to KS F 4919 was measured. The results are shown in Table 2 below.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Seismic resistance nothing strange nothing strange nothing strange Small cracks

As shown in Table 2, the cracking phenomenon occurred on the surface of the waterproof layer made of the composition prepared in Comparative Example 1, but the surface of the waterproof layer made of the organic-inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3 It was confirmed that the splitting phenomenon did not occur.

<Test Example 3> Tensile performance

In order to compare the tensile performance of the organic/inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3 and the composition prepared in Comparative Example 1, tensile performance by KS F 4919 was measured. The results are shown in Table 3 below.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Tensile performance Tensile strength (N/mm ² ) 2.5 2.7 2.6 1.2 Elongation (%) 61 65 66 49

As shown in Table 3, the organic/inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3 exhibited superior tensile performance than the compositions prepared in Comparative Example 1.

<Test Example 4> Crack resistance

In order to compare the crack resistance of the compositions prepared in Comparative Example 1 and the organic/inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3, crack resistance by KS F 4919 was measured. The results are shown in Table 4 below.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Crack resistance Indoor 0℃, 20℃ More than
none More than
none More than
none More than
none Outdoor -10℃, 20℃ More than
none More than
none More than
none More than
none

As shown in Table 4, both the organic and inorganic composite composition for waterproofing the concrete structures prepared in Examples 1 to 3 and the waterproof layer using the composition prepared in Comparative Example 1 did not break.

<Test Example 5> Absorption amount

In order to compare the absorbency of the organic/inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3 and the composition prepared in Comparative Example 1, the absorption amount by KS F 4919 was measured. The results are shown in Table 5 below.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Absorption (g) 0.1 0.2 0.01 0.8

As shown in Table 5, it was confirmed that the concrete structure waterproofing organic/inorganic composite compositions prepared in Examples 1 to 3 showed less absorption than the compositions prepared in Comparative Example 1. As a result, it was confirmed that the waterproof properties of the organic-inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3 were excellent.

<Test Example 6> Water resistance

In order to compare the water permeability of the composition prepared in Example 1 to Example 3 for waterproofing the structure of the concrete structure, and the composition prepared in Comparative Example 1, water permeability by KS F 4919 was measured. The results are shown in Table 6 below.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Water permeability Not pitched Not pitched Not pitched Not pitched

As shown in Table 6, the water permeation phenomenon did not occur in both the waterproof layer using the composition prepared in Comparative Example 1 and the organic-inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3. Thereby, it was confirmed that it had excellent water resistance.

<Test Example 7> moisture permeability

In order to compare the moisture permeability of the organic/inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3 and the composition prepared in Comparative Example 1, moisture permeability by KS F 4919 was measured. The results are shown in Table 7 below.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Moisture permeability Sd(m) One One 0.3 2

As shown in Table 7, it was confirmed that both the organic and inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3 and the waterproof layer using the composition prepared in Comparative Example 1 had moisture permeability.

<Test Example 8> Alkali resistance

In order to compare the alkali resistance of the composition of Comparative Example 1 with the organic/inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3, the alkali resistance was measured by KS F 4919. Table 8 shows the results.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Alkali resistance nothing strange nothing strange nothing strange nothing strange

As shown in Table 8, it was confirmed that both the organic and inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3 and the waterproofing layer using the composition prepared in Comparative Example 1 were excellent in alkali resistance.

<Test Example 9> Thermal conductivity

In order to compare the thermal conductivity characteristics of the organic/inorganic composite composition for waterproofing concrete structures prepared in Examples 1 to 3 and the composition of Comparative Example 1, thermal conductivity was measured by KS L 9016 (measurement method of thermal conductivity of insulating material). Table 9 shows the results.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Thermal conductivity (W/mk) 0.11 0.12 0.10 0.4

As shown in Table 9, it was confirmed that the thermal conductivity was lower than that of the compositions prepared in Comparative Example 1 for the organic/inorganic composite compositions for waterproofing concrete structures prepared in Examples 1 to 3. Thus, by improving the thermal efficiency of the concrete structure by improving the thermal insulation performance, an energy saving effect is expected.

<Test Example 10> Deodorization

In order to compare the deodorizing properties of the composition of Comparative Example 1 with the composition for waterproofing the concrete structure prepared in Examples 1 to 3, the deodorization test was performed by KFIA-FI-1004 (ammonia gas detection tube). . Table 10 shows the results.

Test Items Example 1 Example 2 Example 3 Comparative Example 1 Deodorization (%) 91 93 95 81

As shown in Table 10, it was confirmed that the concrete composition waterproofing organic-inorganic composites prepared in Examples 1 to 3 had better deodorizing properties than the compositions prepared in Comparative Example 1.

As described above, those skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without changing its technical spirit or essential features. Therefore, the embodiments described above are all illustrative and should be understood as not limiting. The scope of the present invention should be construed to include all modified or modified forms derived from the equivalent concept and meaning and scope of the claims, which will be described later, rather than the detailed description.

Claims (4)

In the organic-inorganic composite composition for waterproofing concrete structures for waterproofing concrete structures,
60 to 70% by weight of an inorganic binder and 30 to 40% by weight of an organic performance improving admixture,
The inorganic binder is 5 to 60 parts by weight of aluminum hydroxide, 0.1 to 35 parts by weight of sodium carbonate, 0.1 to 30 parts by weight of titanium oxide, and 0.01 to Sepiolite based on 100 parts by weight of fly ash having a powder of 2,000 to 5,000 cm ² /g. 20 parts by weight, 0.01 to 20 parts by weight of bauxite and 0.01 to 20 parts by weight of metakaolin,
The organic performance improving admixture is based on 100 parts by weight of the acrylic-epoxy copolymer, 5 to 40 parts by weight of isophorone diamine, 1 to 20 parts by weight of tetrabutylammonium hyaluronate, 1 to 20 parts by weight of mono-tert-butyl hydroquinone, 1 to 20 parts by weight of N-vinylpyrrolidone, 0.1 to 5 parts by weight of n-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane, 0.1 to 35 parts by weight of methyl methacrylate-butadiene copolymer, poly 0.1 to 35 parts by weight of acrylic acid, 0.1 to 35 parts by weight of sulfonate (C1-6 alkyl) ester, and 0.1 to 35 parts by weight of pigment,
The acrylic-epoxy copolymer is an epoxy equivalent of 150 to 3000g / eq,
90 to 95% by weight of an acrylic-epoxy copolymer having a weight average molecular weight (Mw) of 300 to 1,000, and 5 to 10% by weight of an acrylic-epoxy copolymer having a weight average molecular weight (Mw) of 10,000 to 300,000;
The inorganic binder further comprises 5 to 20 parts by weight of barium sulfate, based on 100 parts by weight of the fly ash of 2,000 to 5,000 cm ² /g of the powder; 4,4'-butylidenebis (3-methyl-6-t-butylphenol) is further comprising 0.01 to 5 parts by weight;
The organic performance improving admixture further comprises 0.01 to 20 parts by weight of 2-phosphonobutane-1,2,4-tricarboxylic acid with respect to 100 parts by weight of the acrylic-epoxy copolymer; Further comprising 0.01 to 10 parts by weight of at least one viscosity modifier selected from the group consisting of benzyl methacrylate, dipentyl malate, and mixtures thereof; Further comprising 0.01 to 20 parts by weight of at least one organic solvent selected from the group consisting of tetramethylbenzene, dipropylene glycol monomethyl ether acetate and mixtures thereof; Further comprising 0.01 to 10 parts by weight of N-methylethanesulfonamide; Further comprising 0.01 to 10 parts by weight of an antifoaming agent; It further comprises 0.01 to 10 parts by weight of water reducing agent;
The organic-inorganic composite composition for waterproofing the concrete structure is KS F 4919 (cement-incorporated polymer-based waterproofing material) adhesion strength test results, the standard is 1.2 to 1.45 N/mm ² , 1.1 to 1.2 N/mm ² after immersion; As a result of the crack resistance test by KS F 4919, no abnormality was found; As a result of the tensile performance test by KS F 4919, the tensile strength was 2.5 to 2.7 N/mm ² , and the elongation was 61 to 66%; Crack resistance test by KS F 4919, no abnormality; As a result of the absorption test by KS F 4919, it was 0.01 to 0.2 g; As a result of the water permeability test according to KS F 4919, it was not permeable; Moisture permeability (Sd) test according to KS F 4919, 0.3 to 1 m; Alkali resistance test according to KS F 4919, no abnormality; Thermal conductivity test result by KS L 9016 (method for measuring thermal conductivity of insulating materials), 0.1 to 0.12 W/mk; Deodorization test result by KFIA-FI-1004 (ammonia gas detector tube) was 91 to 95%;
Inorganic and inorganic composite composition for waterproofing concrete structures, characterized in that the insulation performance is further improved.
delete As a waterproofing method of a concrete structure using the organic-inorganic composite composition for waterproofing the concrete structure according to claim 1,
Removing impurities, ray tans, and deterioration sites of the concrete structure with a planing machine, grinder, shot blaster, or polishing machine, and cleaning the removed areas with a water jet or a high-pressure sprinkler and cleaning with a vacuum inhaler;
Applying a primer to the surface to strengthen the surface layer and improve adhesion;
A step of first applying the organic/inorganic composite composition for waterproofing the concrete structure to the upper part of the site where the primer is applied, followed by curing, and then applying the organic/inorganic composite composition for waterproofing the concrete structure a second time; And
Waterproofing method of a concrete structure comprising the step of applying a top coating agent to improve the water resistance, wear resistance and antifouling properties on the upper portion of the concrete structure waterproof organic-inorganic composite composition is applied.
The method of claim 3,
The primer,
Selected from acrylic, ethyl vinyl acetate (EVA) and styrene-butadiene rubber (SBR) and the organic performance improving admixture to facilitate the adhesion of the concrete structure waterproofing organic/inorganic composite composition to the concrete structure At least one,
The top coating agent is a waterproof method of a concrete structure, characterized in that at least one selected from aqueous silica sol-based, epoxy, urethane and the performance improving admixture.