KR101615916B1 - Waterproof Organic-Inorganic Complex Composition For Concrete Structure, Manufacturing Method Thereof, And Waterproofing Method of Concrete Structure Therewith - Google Patents
Waterproof Organic-Inorganic Complex Composition For Concrete Structure, Manufacturing Method Thereof, And Waterproofing Method of Concrete Structure Therewith Download PDFInfo
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- KR101615916B1 KR101615916B1 KR1020150156357A KR20150156357A KR101615916B1 KR 101615916 B1 KR101615916 B1 KR 101615916B1 KR 1020150156357 A KR1020150156357 A KR 1020150156357A KR 20150156357 A KR20150156357 A KR 20150156357A KR 101615916 B1 KR101615916 B1 KR 101615916B1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/4598—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with waste materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5025—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with ceramic materials
- C04B41/5035—Silica
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5053—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials non-oxide ceramics
- C04B41/5054—Sulfides or selenides
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/5079—Portland cements
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- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
The present invention relates to an inorganic or organic composite composition for waterproofing a concrete structure, a method for producing the same, and a waterproofing method for a concrete structure using the same. More particularly, the present invention relates to an inorganic or organic composite composition for waterproofing a concrete structure, The present invention relates to a waterproofing method for a concrete structure using an organic / inorganic hybrid composition for waterproofing a concrete structure.
If leaks occur due to defects in waterproofing performance of concrete structures, compressive strength, freeze-thaw resistance, resistance to chemical erosion, etc. are reduced and the life of concrete structures is shortened. This results in a loss of aesthetics of the building and inconvenience to residence as a living space. As a result, deterioration due to physical and chemical environmental conditions is inevitable for large-scale maintenance and rework of concrete structures, which causes great economic losses. For the cracked concrete structure, it is necessary to repair the concrete structure in order to restore its waterproofness and durability, or to take into consideration the stability of the structure and the inertia. In order to repair the cracked part, a permeable waterproofing material generally applied by injection technique is used.
So far, penetration type waterproofing materials commonly used at home and abroad are composed of alkali silicate. These alkaline silicates rapidly react with calcium ions, which are the main constituents of concrete, to form calcium silicate even though the surface tension is low. This calcium silicate is a insoluble and chemically stable oxide that protects the surface of the concrete but has a problem that it can not penetrate into the concrete due to its penetration strength of only a few millimeters and thus it is difficult to restore the performance of the concrete structure.
Also, the concrete water repellent material, which is widely used in domestic and overseas, is applied to the concrete structure and reacts after the water repellent material penetrates into the concrete, thereby generating the hydraulic force, thereby blocking the penetration of water. When the water pressure is greatly affected as in the case of an exponential underground structure, it is difficult to apply due to the limit of the hydraulic force, and it is decomposed by heat and ultraviolet rays, so that it can not exhibit long-term performance. Particularly, in the case of the existing penetrating type water repellent material, since the concrete surface forms a strong lipophilic layer, there is a disadvantage in that when the secondary coating is applied to the concrete surface, the adhesiveness is lowered, the water pressure is weak, have. In addition, it has disadvantages such as degradation of chemical resistance and decomposition when it is exposed to sulfuric acid, hydrochloric acid, etc. and failing to exhibit its function.
Disclosure of the Invention Technical Problem [8] The present invention provides a composite composition for waterproofing a concrete structure, which has excellent penetration ability and is excellent in properties such as water resistance, chemical resistance, acid resistance, durability, salt resistance and strength when repairing concrete structures.
Another object of the present invention is to provide a method for preparing a water-repellent inorganic / organic composite composition for a concrete structure, which has excellent penetration ability and excellent properties such as water resistance, chemical resistance, acid resistance, durability, salt resistance and strength when repairing a concrete structure .
Another object of the present invention is to provide a waterproof composite concrete composition comprising an inorganic binder and a performance improving admixture, which is excellent in penetration and water resistance, chemical resistance, acid resistance, durability, Which is excellent in the characteristics of the concrete structure.
The present invention provides a composition for waterproofing a concrete structure, which comprises an inorganic binder and a performance improving admixture.
The inorganic or organic composite composition for waterproofing a concrete structure may contain 5 to 50% by weight of an inorganic binder and 50 to 95% by weight of a performance improving admixture.
The inorganic binder is fineness is 4000 ~ 5500cm 2 / g of fine powder of ordinary Portland cement 10 to 70% by weight, the powder is also a 4500 ~ 6000cm 2 / g of blast furnace slag fine powder and 5 to 30 wt%, the siliceous powder, 5-20 wt. 0.1 to 15 wt% of magnesium sulfate, 0.1 to 15 wt% of diatomaceous earth, 0.1 to 10 wt% of titanium oxide, 0.01 to 10 wt% of bentonite, 0.01 to 10 wt% of sodium aluminate, and 0.01 to 10 wt% of alkali silicate do.
The performance improving admixture may be selected from the group consisting of 40 to 98% by weight of acryl-urethane, 1 to 15% by weight of methyl acrylate-styrene, 0.1 to 15% by weight of butyl acrylate-butadiene, 0.1 to 15% by weight of vinyl acetate- 0.1 to 15% by weight of acrylate-ethyl acrylate, 0.1 to 10% by weight of methacrylamide and 0.1 to 10% by weight of a pigment.
The performance improving admixture may further include a defoaming agent for removing bubbles in the performance improving admixture to increase strength and durability.
The performance improving admixture may further include a high-performance water reducing agent for reducing the water-cement ratio to improve strength and durability.
The performance improving admixture may further include an alkylene glycol or a polyalkylene glycol for improving the shrinkage reducing effect by lowering the surface tension of the performance improving admixture.
The present invention also relates to a method for producing a composition for waterproofing a concrete structure, which comprises mixing 50 to 95% by weight of a performance improving admixture with 5 to 50% by weight of an inorganic binder, mixing for 30 seconds to 3 minutes, Based composite composition according to the present invention.
According to another aspect of the present invention, there is provided a method of manufacturing a concrete structure, comprising the steps of: removing impurities and deteriorated portions by chipping a portion of the concrete structure deteriorated by a water jet, a grinder, a grinder, Applying the composite composition for waterproofing the water-repellent concrete of the concrete structure to the upper part to which the primer is applied, curing the applied composition, and then applying the water-repellent inorganic / The present invention provides a waterproofing method for a concrete structure using an organic-inorganic hybrid composition for waterproofing a concrete structure, which comprises a step of top coating to improve antifouling property. At this time, in order to increase the toughness on the primer applied area to prevent reflection cracks and the like, a mesh type mat made of at least one fiber selected from polyethylene (PE) fiber, polypropylene (PP) fiber, nylon fiber, According to the concrete concrete state.
The primer may be at least one selected from the group consisting of acrylic, acryl-urethane, ethyl vinyl acetate (EVA) and styrene-butadiene, and the performance improving admixture which facilitates adhesion of the composition for a concrete repair agent to a concrete structure .
According to the present invention, when waterproofing a concrete structure, it is possible to obtain an inorganic and organic composite composition for waterproofing concrete structures excellent in penetration and excellent in properties such as water resistance, chemical resistance, acid resistance, durability, salt resistance and strength.
When waterproofing exposed concrete structures and exponential structures such as rooftops, underground parking lots, outdoor parking lots, bridges, etc. of buildings using water-based composite materials for waterproofing of concrete structures according to the present invention, the PP, PE, nylon and glass fiber mesh The tensile strength and elongation are increased to improve the resistance to the reflection cracks of the lower concrete structure and to induce contraction / expansion due to temperature, humidity, etc., and thus, the integrated behavior with the existing concrete structure can be achieved. Therefore, it exhibits an excellent effect of neutralizing water, chlorine or carbon dioxide, water resistance, weatherability and freezing and thawing resistance together with the effect of blocking moisture.
Hereinafter, preferred embodiments according to the present invention will be described in detail. However, it should be understood that the following embodiments are provided so that those skilled in the art will be able to fully understand the present invention, and that various modifications may be made without departing from the scope of the present invention. It is not.
The composite inorganic / organic composite for waterproofing concrete structures according to a preferred embodiment of the present invention includes an inorganic binder and a performance improving admixture.
The inorganic or organic composite composition for waterproofing concrete structures may contain 5 to 50% by weight of an inorganic binder and 50 to 95% by weight of a performance improving admixture.
The inorganic binder is fineness is 4000 ~ 5500cm 2 / g of fine powder of ordinary Portland cement 10 to 70% by weight, the powder is also a 4500 ~ 6000cm 2 / g of blast furnace slag fine powder and 5 to 30 wt%, the siliceous powder, 5-20 wt. 0.1 to 15 wt% of magnesium sulfate, 0.1 to 15 wt% of diatomaceous earth, 0.1 to 10 wt% of titanium oxide, 0.01 to 10 wt% of bentonite, 0.01 to 10 wt% of sodium aluminate, and 0.01 to 10 wt% of lithium silicate do.
The performance improving admixture may be selected from the group consisting of 40 to 98% by weight of acryl-urethane, 1 to 15% by weight of methyl acrylate-styrene, 0.1 to 15% by weight of butyl acrylate-butadiene, 0.1 to 15% by weight of vinyl acetate- 0.1 to 15% by weight of acrylate-ethyl acrylate, 0.1 to 10% by weight of methacrylamide and 0.1 to 10% by weight of a pigment.
The performance improving admixture may further include a defoaming agent for removing bubbles in the performance improving admixture to increase strength and durability.
The performance improving admixture may further include a high-performance water reducing agent for reducing the water-cement ratio to improve strength and durability.
The performance improving admixture may further include an alkylene glycol or a polyalkylene glycol for improving the shrinkage reducing effect by lowering the surface tension of the performance improving admixture.
The fine powder ordinary Portland cement having a powder degree of 4000 to 5500 cm 2 / g is used to improve strength development, adhesion to concrete concrete and durability. It is preferable that the content of the fine powder of the ordinary Portland cement having a powder degree of 4000 to 5500 cm 2 / g is contained in an amount of 10 to 70% by weight based on the total weight of the inorganic binder. If the content of the fine powder of ordinary Portland cement having a powder degree of 4000 to 5500 cm 2 / g is less than 10% by weight, the effect of improving the strength, adhesion and durability is insufficient. If the content is more than 70% by weight, workability may be deteriorated.
The blast furnace slag powder having a powder viscosity of 4500 to 6000 cm 2 / g is latent hydraulic and is used for improving long-term strength and durability. The blast furnace slag powder having a powdery viscosity of 4500 to 6000 cm 2 / g is preferably contained in an amount of 5 to 30 wt% with respect to the total weight of the inorganic binder, and the blast furnace slag powder having a powder phase of 4500 to 6000 cm 2 / When the content exceeds 5% by weight, the effect of improving long-term strength and durability is insufficient.
The silica powder is used to improve strength and abrasion resistance. When the content of the silica powder is more than 20% by weight, the strength and abrasion resistance are improved but the workability is deteriorated. When the content of the silica powder exceeds 5% by weight %, The external impact strength is lowered.
The magnesium sulfate is used for improving flame retardancy and durability. The magnesium sulfate preferably contains 0.1 to 15% by weight based on the total weight of the inorganic binder. When the content of the magnesium sulfate exceeds 15% by weight, the flame retardancy is improved but the workability and strength are lowered. When the content is less than 0.1% The workability and strength are increased but the flame retarding effect is lowered.
The diatomaceous earth is made of silicic acid (SiO 2 ) and is white or grayish white. Because of its fine porosity, it is highly absorbent and is a bad conductor of heat and is used to prevent material separation and improve fire resistance. The content of the diatomaceous earth is preferably 0.1 to 20% by weight based on the total weight of the inorganic binder. When the content of the diatomaceous earth is more than 20% by weight, the effect of preventing separation of materials and improving the fire resistance is insufficient. The performance improvement effect is deteriorated.
The above-mentioned titanium oxide is used for eliminating gloss of an acid-resistant / alkali-resistant paint, a white pigment having high hiding power, artificial dogs, staple fiber and chemical fiber and is harmless, It is used for packing paper of food. It is also used in soap, printing, printing ink, artificial leather, etc. in addition to polishing of metal products, raw materials for organic titanium compounds, enamel and ceramic glazes, titanium capacitors and dental materials. As titanium oxides, titanium oxide (II), titanium oxide (III), titanium peroxide and the like are known. Since titanium oxide (IV) is excellent in light reflectivity in the infrared region, it exerts an excellent effect in suppressing the temperature rise on the road surface. The content of the titanium oxide is preferably 0.1 to 10% by weight based on the total weight of the inorganic binder. When the content of the titanium oxide exceeds 10% by weight, the effect of improving the temperature rise and the antifouling property is improved, When the amount is less than 0.1% by weight, the performance improving effect is deteriorated.
The bentonite is used as a hygroscopic agent to prevent the foaming by absorbing the moisture of the polymer during rapid curing. The bentonite is preferably contained in an amount of 0.01 to 10% by weight based on the total weight of the inorganic binder. When the content of bentonite is more than 10% by weight, workability is deteriorated and when it is less than 0.01% by weight, separation of materials may occur.
Said aluminate is used to prevent plastic cracking due to initial strength development and initial moisture evaporation. The sodium aluminate is preferably contained in an amount of 0.01 to 10% by weight based on the total weight of the inorganic binder. If the content of the sodium aluminate is less than 0.01% by weight, the initial strength development and the plastic cracking inhibiting effect are insufficient. If the content is more than 10% by weight, the curing time is increased and the workability is lowered.
The alkali silicate is used for improving alkali imparting, water resistance and durability. The content of the alkaline silicate is preferably 0.01 to 10% by weight based on the total weight of the inorganic binder. When the content of the alkaline silicate is more than 10% by weight, the water resistance and durability are improved, %, The improvement effect is lowered.
The acryl-urethane is used for improving strength, durability and weatherability. The content of the acryl-urethane is preferably 50 to 98% by weight based on the total weight of the performance improving admixture. If the content of the acryl-urethane is more than 98% by weight, the weatherability is improved but the price competitiveness is decreased. If the content is less than 50% by weight, the effect of improving weatherability is insufficient.
The methyl acrylate-styrene is used to improve the workability by improving the adhesion and viscosity by having strong permeability. The content of the methyl acrylate-styrene is preferably 1 to 15% by weight based on the total weight of the performance improving admixture. If the content of the methyl acrylate-styrene exceeds 15% by weight, the adhesion is improved but the material separation phenomenon tends to occur. If the content is less than 1% by weight, the effect of improving the adhesion is insufficient.
The butylacrylate-butadiene is used to improve viscosity control, adhesion and ductility. The butyl acrylate-butadiene is preferably contained in an amount of 0.1 to 15% by weight based on the total weight of the performance improving admixture. When the content of butyl acrylate-butadiene exceeds 15% by weight, If the content is less than 0.1% by weight, adhesion and workability are deteriorated.
The vinyl acetate-butyl acrylate is used to improve the adhesive strength and water resistance. The content of the vinyl acetate-butyl acrylate is preferably 0.1 to 15% by weight based on the total weight of the performance improving admixture. If the content of the vinyl acetate-butyl acrylate emulsion exceeds 15% by weight, the adhesive strength and water resistance are improved but the workability is easily deteriorated. If the content is less than 0.1% by weight, the adhesive strength and water resistance are lowered.
The methyl methacrylate-ethyl acrylate is used to improve the adhesive strength. The content of the methyl methacrylate-ethyl acrylate is preferably 0.1 to 15% by weight based on the total weight of the performance improving admixture. If the content of the methyl methacrylate-ethyl acrylate exceeds 15% by weight, the bonding strength and durability are improved but the brittle phenomenon easily occurs. If the content is less than 0.1% by weight, the bonding strength and durability are lowered.
The methacrylamide is used for improving creep resistance, heat resistance and solvent resistance. The content of the methacrylamide is preferably 0.1 to 10% by weight based on the total weight of the performance improving admixture. If the content of the methacrylamide exceeds 10% by weight, the performance is improved but the material separation phenomenon tends to occur. If the content of the methacrylamide is less than 0.1% by weight, the performance improvement effect is insufficient.
The pigment may be an azo compound (AZO compound) which is an organic pigment that reflects infrared rays. The azo compound is a generic name of a compound having an azo group -N = N-. The azo compound has azo nitrogen at a bonding angle close to 120 °, allowing cis- and trans-type geometric isomers, most of which is in a stable trans-form, and azobenzene is a typical azo compound in the trans form. These azo compounds can be used to produce the color desired by the consumer. The content of the pigment is preferably in the range of 0.1 to 10% by weight based on the total weight of the performance improving admixture. If the content of the pigment is less than 0.1% by weight, the effect of reflecting infrared rays is deteriorated. If the content exceeds 10% by weight, the price competitiveness is deteriorated.
The antifoaming agent is used to remove bubbles in the performance improving admixture to increase strength and durability. In addition, when the defoaming agent is added to the performance improving admixture, the air entraining effect is imparted to improve the workability and the pot life. The antifoaming agent is preferably contained in an amount of 0.01 to 5% by weight based on the total weight of the performance improving admixture. Examples of the defoaming agent include alcohol defoaming agents, silicone defoaming agents, fatty acid defoaming agents, oil defoaming agents, ester defoaming agents and oxyalkylene defoaming agents. Examples of the silicone defoaming agent include dimethyl silicone oil, polyorganosiloxane, and fluorosilicone oil. Examples of the fatty acid defoaming agent include stearic acid and oleic acid. Examples of the oil-based antifoaming agents include kerosene, animal and plant oil, and castor oil. Examples of the ester type antifoaming agents include solitol trioleate, glycerol monoricinolate, and the like. Examples of the oxyalkylene antifoaming agents include polyoxyalkylene, acetylene ethers, polyoxyalkylene diisocyanate esters, and polyoxyalkylene alkylamines. Examples of the alcohol-based defoaming agent include glycol.
The high performance water reducing agent is used to improve the strength and durability by reducing the water-cement ratio and to secure the fluidity of the performance improving admixture. Improvement of performance Water-cement ratio is reduced when high performance water reducing agent is added to admixture. The high performance water reducing agent is preferably contained in an amount of 0.01 to 5% by weight based on the total weight of the performance improving admixture. The high performance water reducing agent may be a polycarboxylic acid type, melamine type or naphthalene type water reducing agent. However, the naphthalene type and melamine type may lower the strength of the composition as compared with the polycarboxylic acid type and lower the workability and the pot life, , A polycarboxylic acid-based water-reducing agent which does not lower workability and pot life.
The alkylene glycol or polyalkylene glycol is used for reducing the surface tension of the performance improving admixture to improve shrinkage reduction effect. The content of the alkylene glycol or polyalkylene glycol is preferably 0.01 to 5% by weight based on the total weight of the performance improving admixture.
The present invention also relates to a method for producing a composition for waterproofing a concrete structure, which comprises mixing 50 to 95% by weight of a performance improving admixture with 5 to 50% by weight of an inorganic binder, mixing for 30 seconds to 3 minutes, Based composite composition according to the present invention.
According to another aspect of the present invention, there is provided a method of manufacturing a concrete structure, comprising the steps of: removing impurities and deteriorated portions by chipping a portion of the concrete structure deteriorated by a water jet, a grinder, a grinder, Applying the composite composition for waterproofing the water-repellent concrete of the concrete structure to the upper part to which the primer is applied, curing the applied composition, and then applying the water-repellent inorganic / The present invention provides a waterproofing method for a concrete structure using an organic-inorganic hybrid composition for waterproofing a concrete structure, which comprises a step of top coating to improve antifouling property. In this case, in order to increase the toughness at the portion to which the primer is applied to prevent reflection cracks, it is possible to further include a step of embedding a mesh-type mat made of PE, PP, nylon fiber, have.
The primer may be at least one selected from the group consisting of acrylic, acryl-urethane, ethyl vinyl acetate (EVA) and styrene-butadiene, and the performance improving admixture which facilitates adhesion of the composition for a concrete repair agent to a concrete structure .
Hereinafter, the present invention will be described in more detail with reference to examples.
≪ Example 1 >
30% by weight of an inorganic binder and 70% by weight of a performance improving admixture were mixed in a forced mixer for 2 minutes to prepare an inorganic hybrid composition for waterproofing concrete structures.
At this time, the inorganic binder was prepared by mixing 15 wt% of fine powder of blast furnace slag, 55 wt% of fine powder of portland cement having a powder degree of 4000 to 5500 cm 2 / g, 4500 to 6000 cm 2 / g of powder, 10 wt% of silica powder, 5% by weight of diatomaceous earth, 5% by weight of diatomaceous earth, 5% by weight of titanium oxide, 4% by weight of bentonite, 0.5% by weight of sodium aluminate and 0.5% by weight of alkali silicate.
The performance improving admixture was composed of 92 wt% acryl-urethane, 2 wt% methyl acrylate-styrene, 1 wt% butyl acrylate-butadiene, 1 wt% vinyl acetate-butyl acrylate, methyl methacrylate- 1 weight% of methacrylamide, 1 weight% of pigment, 0.2 weight% of defoamer, 0.3 weight% of high performance water reducing agent and 0.5 weight% of alkylene glycol or polyalkylene glycol Respectively. At this time, the antifoaming agent may be an alcohol type antifoaming agent or a silicone type antifoaming agent. The high performance water reducing agent used was a polycarboxylic acid based high performance water reducing agent.
≪ Example 2 >
30% by weight of an inorganic binder and 70% by weight of a performance improving admixture were mixed in a forced mixer for 2 minutes to prepare an inorganic hybrid composition for waterproofing concrete structures.
At this time, the inorganic binder was prepared by mixing 15 wt% of fine powder of blast furnace slag, 55 wt% of fine powder of portland cement having a powder degree of 4000 to 5500 cm 2 / g, 4500 to 6000 cm 2 / g of powder, 10 wt% of silica powder, 5% by weight of diatomaceous earth, 5% by weight of diatomaceous earth, 5% by weight of titanium oxide, 4% by weight of bentonite, 0.5% by weight of sodium aluminate and 0.5% by weight of alkali silicate.
The performance improving admixture was prepared by mixing 87 wt% of acryl-urethane, 3 wt% of methyl acrylate-styrene, 2 wt% of butyl acrylate-butadiene, 2 wt% of vinyl acetate-butylacrylate, 2 weight% of methacrylamide, 1 weight% of pigment, 0.2 weight% of defoamer, 0.3 weight% of high performance water reducing agent and 0.5 weight% of alkylene glycol or polyalkylene glycol Respectively. At this time, the antifoaming agent may be an alcohol type antifoaming agent or a silicone type antifoaming agent. The high performance water reducing agent used was a polycarboxylic acid based high performance water reducing agent.
≪ Example 3 >
30% by weight of an inorganic binder and 70% by weight of a performance improving admixture were mixed in a forced mixer for 2 minutes to prepare an inorganic hybrid composition for waterproofing concrete structures.
At this time, the inorganic binder was prepared by mixing 15 wt% of fine powder of blast furnace slag, 55 wt% of fine powder of portland cement having a powder degree of 4000 to 5500 cm 2 / g, 4500 to 6000 cm 2 / g of powder, 10 wt% of silica powder, 5% by weight of diatomaceous earth, 5% by weight of diatomaceous earth, 5% by weight of titanium oxide, 4% by weight of bentonite, 0.5% by weight of sodium aluminate and 0.5% by weight of alkali silicate.
The performance improving admixture was composed of 82 wt% of acryl-urethane, 4 wt% of methyl acrylate-styrene, 3 wt% of butylacrylate-butadiene, 3 wt% of vinyl acetate-butylacrylate, 3 weight% of methacrylamide, 1 weight% of pigment, 0.2 weight% of defoamer, 0.3 weight% of high performance water reducing agent and 0.5 weight% of alkylene glycol or polyalkylene glycol Respectively. At this time, the antifoaming agent may be an alcohol type antifoaming agent or a silicone type antifoaming agent. The high performance water reducing agent used was a polycarboxylic acid based high performance water reducing agent.
<Example 4>
The waterproofing sheet was prepared by coating the organic / inorganic hybrid composition for waterproofing concrete prepared in Example 1 once, filling the PE mesh, and then applying the organic / inorganic hybrid composition for waterproofing the concrete structure.
≪ Example 5 >
The waterproofing sheet was prepared by coating the organic / inorganic hybrid composition for waterproofing concrete prepared in Example 2 once, and then filling the PE mesh with the waterproof composite composition for waterproofing the concrete structure.
≪ Example 6 >
The waterproofing sheet was prepared by coating the organic / inorganic hybrid composition for waterproofing concrete prepared in Example 3 once, and then filling the PE mesh with the waterproof composite composition for waterproofing the concrete structure.
In order to more easily grasp the characteristics of the first to third embodiments, comparative examples which can be compared with the embodiments of the present invention are presented.
≪ Comparative Example 1 &
30% by weight of ordinary Portland cement and 70% by weight of acryl-urethane were mixed in a forced mixer for 2 minutes to prepare a composition.
≪ Comparative Example 2 &
The composition prepared in Comparative Example 1 was applied once, the PE mesh was embedded, and then the composition prepared in Comparative Example 1 was applied to prepare a sheet.
The present invention will be described in more detail with reference to the following experimental examples, which are not intended to limit the present invention.
≪ Test Example 1 >
In order to compare the mechanical properties of the composite and sheet of the present invention with those of the organic and inorganic composite for waterproofing and the sheet prepared in Comparative Examples 1 and 2, tensile strength, elongation and tensile strength of KS F 3211 (construction coating waterproofing material) Tensile bond strength test was conducted, and the results are shown in Table 1 below.
2
(Kgf / cm2)
As shown in Table 1, Examples 1 to 6 using the organic-inorganic hybrid composition for waterproofing concrete and the sheet prepared according to the preferred embodiment of the present invention had significantly higher tensile strength, elongation and tensile adhesion performance than Comparative Examples 1 and 2 Respectively.
≪ Test Example 2 > Tensile performance after degradation treatment
In order to compare the tensile performance after degradation treatment of the composition and sheet of the comparative example and the sheet with the organic-inorganic hybrid composition for waterproofing concrete prepared in Examples, the tensile performance after the deterioration treatment was measured by KS F 3211. The results are shown in Table 2.
(%)
Elongation (%)
As shown in Table 2, Examples 1 to 6 of the present invention exhibited better tensile performance after heat treatment than Comparative Examples 1 and 2.
≪ Test Example 3 >
The temperature dependency of the water-insoluble organic / inorganic hybrid composition and sheet prepared in the examples was compared with that of the comparative composition and sheet by KS F 3211. The results are shown in Table 3.
(%)
As shown in Table 3 above, Examples 1 to 6 of the present invention showed much higher temperature dependency than Comparative Examples 1 and 2.
≪ Test Example 4 >
In order to compare the deterioration properties of the concrete composition waterproofing inorganic composite compositions and sheets prepared in the examples and the compositions of the comparative examples and the sheets during the extension, KS F 3211 was used to measure the deterioration properties during elongation. The results are shown in Table 4.
Degradation property
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none
none
none
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none
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As shown in Table 4, in Examples 1 to 6 and Comparative Examples 1 and 2 of the present invention, cracks, residue and deformation did not occur.
≪ Test Example 5 >
In order to compare the flow resistance performance of the concrete composition waterproofing organic composite composition and sheet and the comparative composition and sheet produced in the concrete example, the falling resistance performance was measured by KS F 3211. The results are shown in Table 5.
Resistance performance
As shown in the above table, the preferred embodiments 1 to 6 of the present invention had less runoff than Comparative Examples 1 and 2, and wrinkles did not occur in any specimen.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, This is possible.
Claims (9)
5 to 50% by weight of an inorganic binder and 50 to 95% by weight of an organic performance improving admixture,
The inorganic binder is fineness is 4000 ~ 5500cm 2 / g of fine powder of ordinary Portland cement 10 to 70% by weight, the powder is also a 4500 ~ 6000cm 2 / g of blast furnace slag fine powder and 5 to 30 wt%, the siliceous powder, 5-20 wt. 0.1 to 15 wt% of magnesium sulfate, 0.1 to 15 wt% of diatomaceous earth, 0.1 to 10 wt% of titanium oxide, 0.01 to 10 wt% of bentonite, 0.01 to 10 wt% of sodium aluminate, and 0.01 to 10 wt% of alkali silicate and,
The performance improving admixture may be selected from the group consisting of 40 to 98% by weight of acryl-urethane, 1 to 15% by weight of methyl acrylate-styrene, 0.1 to 15% by weight of butyl acrylate-butadiene, 0.1 to 15% by weight of vinyl acetate- 0.1 to 15% by weight of acrylate-ethyl acrylate, 0.1 to 10% by weight of methacrylamide, and 0.1 to 10% by weight of a pigment,
The performance improving admixture may further comprise an alkylene glycol or a polyalkylene glycol for improving the shrinkage reducing effect by lowering the surface tension of the performance improving admixture. Composition for waterproofing structures.
Wherein the performance improving admixture further comprises a defoaming agent for removing bubbles in the performance improving admixture to increase strength and durability.
Wherein the performance improving admixture further comprises a high-performance water reducing agent for reducing the water-cement ratio to improve the strength and durability.
And 5 to 50% by weight of the inorganic binder is added to 50 to 95% by weight of the performance improving admixture, and the mixture is mixed for 30 seconds to 3 minutes.
A cleaning step of cleaning a portion of the concrete structure where the concrete deteriorates;
Applying a primer to the deteriorated portion of the concrete that has been cleaned in the cleaning step;
Coating the organic composite material for waterproofing concrete with water on the upper portion of the primer-coated portion by first coating and then curing the organic-inorganic hybrid composition for waterproofing the concrete structure secondarily; And
Coating the top of the coated portion of the organic / inorganic composite for waterproofing concrete with a top coat to improve waterproofness, abrasion resistance and antifouling property;
A waterproofing method for a concrete structure using an organic / inorganic hybrid composition for waterproofing a concrete structure.
Before the primary coating of the organic / inorganic hybrid composition for waterproofing the concrete structure is applied to the upper part of the primer applied area,
In order to increase the toughness at the portion to which the primer is applied and to prevent reflection cracks and the like, a mat type net made of at least one fiber selected from polyethylene (PE) fiber, polypropylene (PP) fiber, nylon fiber, Wherein the method further comprises the step of embedding the water-repellent composite composition of the present invention.
In the step of applying the primer,
In order to facilitate the adhesion of the water-repellent inorganic / organic composite composition to the concrete structure, at least one selected from the group consisting of acrylic, acryl-urethane, ethyl vinyl acetate (EVA), styrene-butadiene, A waterproofing method for a concrete structure using an organic / inorganic hybrid composition for waterproofing a concrete structure.
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| CN106116414A (en) * | 2016-06-23 | 2016-11-16 | 李庆良 | A kind of wear-resisting waterproof nano modification highway bridge material and preparation method thereof |
| CN107698218A (en) * | 2017-11-13 | 2018-02-16 | 蒋艳玲 | A kind of insulation leakproofing material |
| KR101914735B1 (en) | 2018-04-18 | 2018-11-02 | (주)경룡 | Crack inhibition type cement concrete composition with excellent corrosion and wear resistance and maintenance method for road pavement therewith |
| KR102070677B1 (en) | 2019-07-05 | 2020-01-30 | 이용교 | functional waterproof paint composition having excellent permeating, adhadhesive and waterproofing property and waterproofing method of concrete structure therewith |
| KR102130477B1 (en) | 2019-08-30 | 2020-07-06 | 주식회사 홍서이엔씨 | Waterproof organic-inorganic complex composition for concrete structure and waterproofing method of concrete structure therewith |
| KR102296298B1 (en) * | 2021-04-27 | 2021-09-02 | 주식회사 세기엔지니어링 | Composition of finishing material for concrete building structure and coating method thereof |
| CN116023812A (en) * | 2023-02-08 | 2023-04-28 | 漳州海耀绿阑新材料有限公司 | Preparation method of high-performance inorganic powder coating |
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