KR101662711B1 - Mineral wet primer compositions for waterproofing concrete structure, polyurea waterproofing method therewith - Google Patents
Mineral wet primer compositions for waterproofing concrete structure, polyurea waterproofing method therewith Download PDFInfo
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- KR101662711B1 KR101662711B1 KR1020160013839A KR20160013839A KR101662711B1 KR 101662711 B1 KR101662711 B1 KR 101662711B1 KR 1020160013839 A KR1020160013839 A KR 1020160013839A KR 20160013839 A KR20160013839 A KR 20160013839A KR 101662711 B1 KR101662711 B1 KR 101662711B1
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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
- C04B41/48—Macromolecular compounds
- C04B41/4853—Epoxides
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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
- C04B41/48—Macromolecular compounds
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/004—Sealing liners
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
- E04B1/644—Damp-proof courses
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D11/00—Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, e.g. built-up roofs, elevated load-supporting roof coverings
- E04D11/02—Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/10—Accelerators; Activators
- C04B2103/14—Hardening accelerators
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/65—Water proofers or repellants
Abstract
Description
The present invention relates to a mineral-based wet primer for concrete waterproofing polyurea and a concrete polyurea waterproofing method using the same. More particularly, the present invention relates to a waterproofing method for polyurea concrete for waterproofing a concrete surface, Which is environmentally friendly, has no odor, and does not use an organic solvent as a water-soluble organic solvent. In addition to being able to be applied to a wet surface, moisture penetrating from the back of a concrete is shielded to prevent lifting of a polyurea coating film The present invention relates to a mineral-based wet primer for a concrete waterproofing polyurea having improved durability and a concrete polyurea waterproofing method using the same.
Generally, concrete has good compressive strength, and is resistant to acid resistance, alkali resistance, chemical resistance, ultraviolet rays, etc. However, as the use period has elapsed, the strength of the concrete decreases due to a substance containing impurities such as acid / alkali, If cracks occur due to external cracks, micro cracks and irregular cracks occur at the time of curing, cracks occur due to external force, and leaking occurs. If the corrosion is intensified, the buried steel is also corroded and the durability of the structure is seriously deteriorated. And the like.
Conventionally, there has been known a method of waterproofing and / or waterproofing concrete by applying a resin material such as epoxy or urethane on a concrete surface to form a protective film. Recently, a polyurea waterproofing method for coating a polyurea resin has been widely used . Polyurea is a resin generally produced by a chain reaction of an isocyanate prepolymer and an amine, and has a wide range of applications because it exhibits a faster drying time and excellent physical properties than conventional epoxies or urethanes. For example, polyurea has been used as surface protection or flooring for chemical tanks, pipes, pipes, steel pipes, various reinforcing bars and concrete structures, ships, chemical plants, refineries, power stations, water treatment facilities,
Generally, the waterproofing method using polyurea generally comprises a surface preparation step, a primer application step, a polyurea application step, and a top coating step. When the polyurea is directly applied to the concrete surface, the watertightness of the concrete surface is not good, so that pinholes are generated and the surface becomes uneven. Therefore, in order to solve this problem, the primer is applied before coating polyurea. Conventionally, urethane or epoxy primer is used as a primer, but there are many problems such as a need for ventilation due to a large amount of volatile components, a slow reaction rate, and a vulnerability to temperature and humidity.
The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a polyurea waterproofing method for waterproofing a concrete surface, particularly a two-pack type primer containing a subject and a hardener used before polyurea application, Is a new concrete waterproofing polyurea for waterproofing that does not use an organic solvent and can be applied to the wet side as well as preventing moisture penetration from the back of concrete and preventing lifting of the polyurea paint film. A primer composition and a concrete polyurea waterproofing method using the same.
According to an embodiment of the present invention, a mineral-based wetting primer composition for a concrete waterproofing polyurea comprises 25 to 55% by weight of water-soluble epoxy resin, 10 to 35% by weight of water, ordinary Portland cement, blast furnace slag, fly ash, 25 to 55% by weight of a polymeric capane, 5 to 10% by weight of a modified aliphatic polyamine, 25 to 45% by weight of a polymeric capping agent, 25 to 45% by weight of a mineral binder composed of trimethylamine, silicon waste sludge and 0.01 to 15% A curing agent comprising 5 to 20% by weight of an anhydride curing agent, 10 to 15% by weight of a phenalkamine and 10 to 35% by weight of a curing accelerator in a ratio of 3 to 4 parts by weight to 1 part by weight.
The water-soluble epoxy resin in the subject matter has the following formula:
Wherein R 1 and R 2 are alkyl of 1 to 6 carbon atoms such as methyl, ethyl, n-propyl, isopropyl, isobutyl, n-butyl, t-butyl, t-pentyl, neopentyl, n-hexyl, isohexyl, and the like, n is an average number of repeating units of 1 <n <30, and Ep is an epoxy compound.
In the above subject, the mineral binder is usually selected from the group consisting of 100 parts by weight of Portland cement, 5 to 40 parts by weight of blast furnace slag, 5 to 40 parts by weight of fly ash, 1 to 25 parts by weight of atropulgite, 0.01 to 10 parts by weight of trimethylamine, 0.01 to 10 parts by weight of sludge.
The additive in the subject matter may be selected from the group consisting of a surfactant comprising a mixture of nonylphenol ethosylate or sodium lauryl sulfate, an antioxidant comprising ammonium persulfate or sodium bisulfite, a precipitant, a retarder, a flame retardant, a defoamer, a dispersant, And at least one of an inorganic pigment.
The curing accelerator in the curing agent is selected from the group consisting of tertiary amines including tri-n-butylamine, benzylmethylamine, 2,4,6-tris (dimethylaminomethyl) phenol, 2-methylimidazole, , 2-ethyl-4-methylimidazole, and imidazoles including 2-phenylimidazole.
The concrete polyurea waterproofing method using the mineral-based wet primer composition for concrete waterproofing polyurea according to an embodiment of the present invention includes a cleaning step of removing impurities and deterioration parts of a surface of a concrete structure; Applying a mineral-based wetting primer composition for a concrete waterproofing polyurea according to the present invention to the cleaned concrete surface; Spraying a polyurea resin onto the painted mineral wetting primer composition after curing; And topcoating the coated polyurea.
According to the present invention, in a polyurea waterproofing method for waterproofing a concrete surface, it is a two-pack type primer containing a subject and a curing agent, particularly used before polyurea application, and is environmentally friendly without odor and can be cured at a low temperature below room temperature, The present invention relates to a mineral-based wet primer composition for a new concrete waterproofing polyurea wherein durability is improved by preventing pinholes on the surface of the polyurea coating film and preventing moisture penetration from the back of the concrete as well as being able to be installed on the wet surface, It is possible to provide a concrete polyurea waterproofing method.
Specifically, according to the present invention, by using a compound containing a water-soluble epoxy resin and a mineral binder and a compound such as a polymer capane capable of curing the epoxy resin at a low temperature below room temperature as a curing agent, it is environment- Mineral wetting primer composition for a new concrete waterproofing polyurea which is hardenable and can be applied on a wet surface and has improved durability such as prevention of pinholes on concrete surfaces as well as resistance to chloride penetration, freeze-thaw resistance and alkali- And a concrete polyurea waterproofing method using the same.
Further, according to the present invention, by using cement and industrial by-products in the mineral binder, it is possible to improve the long-term strength by using an admixture such as blast furnace slag and fly ash which is useful in terms of recycling of industrial by-products and has potential hydraulic and pozzolanic reaction characteristics. A new wet concrete primer composition for a concrete waterproofing polyurethane having improved durability such as penetration resistance, freeze-thaw resistance, alkali-aggregate reaction inhibition, and concrete polyurea waterproofing method using the same.
Further, according to the present invention, by providing a high-density-based, two-component mineral-based wet primer resistant to moisture, a primer layer can be formed on a concrete slab constituting a ceiling or a passage of water vapor and water rising from under the concrete layer, It is possible to form a rear moisture barrier film which can prevent and protect the adhesive agent, the finish agent, the coating agent and the like which are coated on the primer layer.
Further, according to the present invention, it is possible to prevent capillary penetration of oil or other chemicals from the ground and to treat oil-contaminated slabs.
Furthermore, the two-part type mineral-based wet primer according to the present invention is water-soluble and does not use an organic solvent (solvent-free), and has an advantage that the primer coating surface can be immediately worked after cleaning. In addition, the primer layer can provide the advantage of being able to form a barrier to lanthanum.
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.
According to an embodiment of the present invention, a mineral-based wet primer composition for a concrete waterproofing polyurea is a two-pack wetting primer comprising a base and a hardener. The subject is a mineral binder consisting of 25-45 wt% of water-soluble epoxy resin, 10-35 wt% of water, mineral binder comprising ordinary Portland cement, blast furnace slag fine powder, fly ash, atropulphite, trimethylamine, %, And 0.01 to 15 wt% of an additive. On the other hand, the curing agent comprises 25 to 55% by weight of polymer capstan, 5 to 10% by weight of modified aliphatic polyamine, 5 to 20% by weight of an anhydride curing agent, 10 to 15% by weight of phenacamine, and 10 to 35% by weight of a curing accelerator . The base and curing agent may be stored separately and mixed in a ratio of 3 to 4 parts by weight to 1 part by weight when used in the field.
The subject of the two-pack type primer composition according to the present invention is a composition comprising 25 to 55% by weight of a water-soluble epoxy resin, 10 to 35% by weight of water, ordinary Portland cement, blast furnace slag fine powder, fly ash, Amine, 25 to 45 wt% of a mineral binder comprising silicon waste sludge, and 0.01 to 15 wt% of an additive.
Among them, the water-soluble epoxy resin may include water-soluble epoxy resin and water-dispersed epoxy resin which are conventionally known. In particular,
Wherein R 1 and R 2 are alkyl of 1 to 6 carbon atoms such as methyl, ethyl, n-propyl, isopropyl, isobutyl, n-butyl, t-butyl, t-pentyl, neopentyl, n-hexyl, isohexyl, and the like, n is an average number of repeating units of 1 <n <30, and Ep is an epoxy compound.
Such a water-soluble epoxy resin is colorless, odorless and transparent, and can be adjusted in concentration by water. Therefore, it is environmentally friendly and has been widely used as a two-component type primer using a primer added with a mineral filler or a curing agent. The water-soluble epoxy resin is excellent in mechanical properties such as impact resistance and abrasion resistance, excellent in chemical performance such as chemical resistance, water resistance and solvent resistance, excellent in adhesion and durability, and especially in a place where ventilation is difficult due to little odor There is an advantage that the operation is easy.
The water-soluble epoxy resin may contain 25 to 55% by weight based on the subject weight. If the amount of the water-soluble epoxy resin is less than 25 wt% based on the weight of the base, it is difficult to obtain the desired adhesion property, and if it is more than 55 wt% based on the basis weight, the amount of the mineral binder is small and it is difficult to obtain desired additional properties in the present invention.
The mineral binder may be selected from the group consisting of 100 parts by weight of Portland cement, 5 to 40 parts by weight of blast furnace slag, 5 to 40 parts by weight of fly ash, 1 to 25 parts by weight of atropulgite, 0.01 to 10 parts by weight of trimethylamine, And 0.01 to 10 parts by weight of waste sludge.
Normally, Portland cement can usually use Portland cement. It is usually preferred to use Portland cement as specified in KS.
A blast furnace slag fine powder refers to a blast furnace slag obtained by quenching a molten blast furnace slag at the same time as a pig iron in a blast furnace (blast furnace), followed by drying and pulverizing. It has a weak hardening property in itself, but it has potential hydraulic properties and is used for improving strength and durability by improving physical properties of portland cement itself. The blast furnace slag powder is preferably contained in an amount of 5 to 40 parts by weight based on 100 parts by weight of the Portland cement. If the content of the blast furnace slag fine powder is less than 5 parts by weight, the initial reactivity of the blast furnace slag may be deteriorated and the initial strength development and durability improving effect may be deteriorated. If the blast furnace slag fineness exceeds 40 parts by weight, And drying shrinkage may increase.
Fly ash is produced by burning fine powder coal at a high temperature of about 1400 ° C in a thermal power plant and discharging it after discharging it using an electrostatic precipitator. When it is mixed with portland cement, It is used for improving strength and durability because it improves the physical properties of Portland cement itself. It is preferable that the fly ash is contained in an amount of 5 to 40 parts by weight based on 100 parts by weight of the Portland cement. When the content of the fly ash is less than 5 parts by weight, the initial reactivity is lowered and the initial strength development and durability improving effect may be deteriorated. When the fly ash content is more than 40 parts by weight, the durability is improved but the strength and drying shrinkage Can be increased.
Acetapulgite is a porous mineral preservative residue material used to improve water retention and prevention of material separation. It is preferable that the above-mentioned perphosphite is contained in an amount of 1 to 25 parts by weight with respect to 100 parts by weight of the Portland cement. When the content of the atropulgite is less than 1 part by weight, the maintenance performance deteriorates and the material separation phenomenon tends to occur. When the content of the atropulgite is more than 25 parts by weight, the water retention property is improved, The expression may be delayed.
Trimethylamine is used to improve chloride ion penetration resistance and water resistance. The trimethylamine is preferably contained in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the Portland cement. If the content of trimethylamine is less than 0.01 part by weight, the chloride ion penetration resistance and waterproofing effect may be insignificant. If the trimethylamine content exceeds 10 parts by weight, chloride ion penetration resistance and waterproofing effect are improved, It is easy.
Silicon waste sludge is used to obtain shrinkage reduction effect because it has swelling property. The silicon waste sludge is preferably contained in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the Portland cement. If the content of the silicon waste sludge is less than 0.01 parts by weight, the shrinkage reduction effect may be insufficient. If the content of the silicon waste sludge exceeds 10 parts by weight, the silicone waste sludge may over-expand.
Water in the subject matter may be comprised of from 10 to 35% by weight, based on the weight of the composition, of the components to mix to adjust the appropriate working concentration (e.g., solids concentration of the primer composition). When the solid content of the primer is more than 10% by weight, the thickness of the coated primer layer becomes thicker, and when the solid content of the primer is more than 10% by weight, So as to prevent deterioration in performance.
The curing agent of the two-pack type primer composition according to the present invention is a curing agent capable of inducing a polymerization reaction at a low temperature of room temperature or lower and curing, 10 to 15% by weight of phenacamine, and 10 to 35% by weight of a curing accelerator.
The polymer capant has the function of accelerating the curing reaction of the epoxy resin and increasing the viscosity. When using, for example, a 3-fluoro-bromo-polymer capant system as the polymer capping agent, the epoxy resin can be cured at a low temperature below room temperature. The polymer cap can contain 25 to 55% by weight based on the weight of the curing agent. If the content of the polymer capping agent is less than 25% by weight, the curing temperature may be elevated. If the content of the polymer capping agent is more than 55% by weight, addition amounts of other curing agent components may be limited.
The modified aliphatic polyamines have the function of accelerating the curing reaction, enhancing the acid resistance and alkali resistance, inhibiting the absorption of carbon dioxide in the air, and reducing the toxicity of the curing agent. The modified aliphatic polyamine is preferably contained in an amount of 5 to 30% by weight based on the weight of the curing agent. If the content of the modified aliphatic polyamine is less than 5 wt%, the acid resistance and alkali resistance of the composition may be insignificant. If the content of the modified aliphatic polyamine exceeds 30 wt%, the addition amount of other curing agent components may be limited.
Penicamins play a role in imparting water stability. It is preferred that the phenacamine contains 10 to 15% by weight based on the weight of the curing agent. If the content of the phenacamine is less than 10% by weight, a function-lowering effect may be exhibited when the primer composition is applied to the wet surface. If the content exceeds 15% by weight, the addition amount of other curing agent components may be limited.
The additive in the subject matter may be selected from the group consisting of surfactants including nonylphenol ethonsyrate or sodium lauryl sulfate mixture, antioxidants including ammonium persulfate or sodium bisulfite, antisettling agents, retarders, flame retardants, defoamers, binders, And a pigment.
The antifoaming agent is used to remove the pores in the concrete to increase the strength and durability of the concrete. As the defoaming agent, generally known materials such as an alcohol defoaming agent, a silicone defoaming agent, a fatty acid defoaming agent, an oil defoaming agent, an ester defoaming agent, and an oxyalkylene defoaming agent may be used. 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 agent include kerosene, animal and plant oil, castor oil, and the ester-based antifoaming agents include solitol trioleate and glycerol monoricinolate. Examples of the oxyalkylene antifoaming agents include polyoxyalkylene, acetylene ethers, polyoxyalkylene diazoxide esters, polyoxyalkylene alkylamines, and the like. Examples of the antifoaming agent include glycol.
The dispersant is used to improve workability by improving dispersibility of the ultra fast curing color cement composition having improved durability. The dispersant may be polycarboxylic acid type, naphthalene type, melamine type or the like, but it is preferable to use a polycarboxylic acid type dispersant.
The retarding agent is preferably used to prevent rapid loss of workability of the composition and to prevent agglomeration, wherein the retarding agent is preferably one or a mixture of tartaric acid and citric acid.
The inorganic pigments may be used to impart the color of the composition. Herein, one or more of red iron oxide, yellow iron oxide, chromium oxide (Cr 2 O 3 ), purple iron oxide and black iron oxide (carbon black) may be used as the inorganic pigment, , And white.
The curing accelerator in the curing agent may include 10 to 35% by weight of a curing accelerator based on the weight of the curing agent. The curing accelerator may include tri-n-butylamine, benzylmethylamine, 2,4,6-tris (dimethylaminomethyl) Tertiary amines, imidazoles including 2-methylimidazole, 2-ethylimidazole, 2-ethyl-4-methylimidazole, and 2-phenylimidazole.
The above-mentioned subject and curing agent are mixed at a weight ratio of 3 to 4: 1, and then partially coated with a tool such as a brush or the like at a spot, a corner, or a changed color, Apply several times. The coating thickness of the primer is about 0.1 to 3 mm at the time of one application, and it is preferable that the total thickness at the time of applying a few times is 1 mm or less.
The primer coating film is cured within about 1 to 2 hours after application, and the polyurea can be applied on the cured primer layer. The polyurea resin can be sprayed at a temperature of about 70 to 80 DEG C at a discharge pressure of 150 to 200 kg / cm < 2 >, and the polyurea coating layer can be formed to a thickness of about 1.5 to 2 mm once or twice.
The concrete polyurea waterproofing method using the mineral-based wet primer composition for concrete waterproofing polyurea according to an embodiment of the present invention includes a cleaning step of removing impurities and deterioration parts of a surface of a concrete structure; Applying a mineral-based wetting primer composition for a concrete waterproofing polyurea according to the present invention to the cleaned concrete surface; Spraying a polyurea resin onto the painted mineral wetting primer composition after curing; And topcoating the coated polyurea.
By applying the mineral-based wet primer composition for concrete waterproofing polyurea as described above and coating the polyurea, not only the concrete surface and the polyurea coating layer can be strongly adhered, but also the wet surface can be worked, It is possible to form a polyurea waterproof coating film with improved quality such as durability by preventing the penetration of moisture from the back of the concrete and preventing lifting of the polyurea coating film.
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 (6)
25 to 45% by weight of a mineral binder composed of 25 to 55% by weight of a water-soluble epoxy resin, 10 to 35% by weight of water, ordinary Portland cement, fine blast furnace slag powder, fly ash, perphosphite, trimethylamine, silicon waste sludge, 0.01 to 15% by weight of an additive,
A curing agent comprising 25 to 55% by weight of a polymeric capstan, 5 to 10% by weight of a modified aliphatic polyamine, 5 to 20% by weight of an anhydride curing agent, 10 to 15% by weight of a penicamine and 10 to 35%
3 to 4 parts by weight of the above-mentioned curing agent and 1 part by weight of the aforementioned curing agent,
The water-soluble epoxy resin in the subject matter has the following formula:
Wherein R 1 and R 2 are independently selected from the group consisting of alkyl having 1 to 6 carbon atoms, methyl, ethyl, n-propyl, isopropyl, isobutyl, n-butyl, t-butyl, s- N is an average number of repeating repeating units of 1 < n < 30, and Ep is an epoxy-based compound)
In the above subject matter, the mineral binder is usually selected from the group consisting of 100 parts by weight of Portland cement, 5 to 40 parts by weight of blast furnace slag, 5 to 40 parts by weight of fly ash, 1 to 25 parts by weight of atropulgite, 0.01 to 10 parts by weight of trimethylamine, And 0.01 to 10 parts by weight of sludge, based on the total weight of the water-soluble polyurea.
The additive in the subject matter may be selected from the group consisting of surfactants including nonylphenol ethosylate or sodium lauryl sulfate mixture, antioxidants including ammonium persulfate or sodium bisulfite, anti-settling agents, retarders, flame retardants, defoamers, dispersants, binders, And at least one of inorganic pigments. The mineral-based wet primer composition for concrete waterproofing polyurea according to claim 1,
The curing accelerator in the curing agent is selected from the group consisting of tertiary amines including tri-n-butylamine, benzylmethylamine, 2,4,6-tris (dimethylaminomethyl) phenol, 2-methylimidazole, , 2-ethyl-4-methylimidazole, and imidazoles including 2-phenylimidazole. The mineral-based wet primer composition for a concrete waterproofing polyurea according to claim 1,
A cleaning step of removing impurities and deterioration parts of the surface of the concrete structure;
Applying a mineral-based wetting primer composition for the concrete waterproofing polyurea to the cleaned concrete surface;
Spraying a polyurea resin onto the painted mineral wetting primer composition after curing; And
And coating the coated polyureas with a top coating. The concrete polyurea waterproofing method using the mineral-based wetting primer composition for concrete waterproofing polyurea.
Priority Applications (1)
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| CN108532606A (en) * | 2018-04-23 | 2018-09-14 | 中铁七局集团第四工程有限公司 | The temperature control method of mass concrete |
| KR101991240B1 (en) * | 2019-01-29 | 2019-06-20 | 최형철 | Improved waterproof method by eco-friendly polyurea paint film |
| KR20190074932A (en) | 2017-12-20 | 2019-06-28 | 코오롱인더스트리 주식회사 | Environment-friendly polyurea waterproofing method and waterproofing structure thereof |
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| KR102297261B1 (en) * | 2021-07-07 | 2021-09-03 | 삼성포리머 주식회사 | Wet primer composition |
| KR102307322B1 (en) * | 2021-03-17 | 2021-09-30 | 주식회사 아이랩 종합건설 | Epoxy-based resin mortar floor finishing composition using blast furnace slag powder and construction method of floor finishing material using the same |
| CN116063873A (en) * | 2023-03-02 | 2023-05-05 | 青岛爱尔家佳新材料股份有限公司 | Special aqueous putty for spraying polyurea elastomer and preparation method thereof |
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| CN116063873A (en) * | 2023-03-02 | 2023-05-05 | 青岛爱尔家佳新材料股份有限公司 | Special aqueous putty for spraying polyurea elastomer and preparation method thereof |
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