KR101110704B1 - Cement-polymer modified waterproof coatings - Google Patents
Cement-polymer modified waterproof coatings Download PDFInfo
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- KR101110704B1 KR101110704B1 KR1020100042887A KR20100042887A KR101110704B1 KR 101110704 B1 KR101110704 B1 KR 101110704B1 KR 1020100042887 A KR1020100042887 A KR 1020100042887A KR 20100042887 A KR20100042887 A KR 20100042887A KR 101110704 B1 KR101110704 B1 KR 101110704B1
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- weight
- cement
- waterproofing
- agent
- structures
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Classifications
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- 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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/06—Acrylates
Abstract
The present invention is not only waterproof but also excellent in chemical resistance, weather resistance, crack resistance, impact resistance and hydrophilicity and high tensile strength by applying to structures that require waterproofing and leak prevention, as well as water resistance. It can be used for waterproofing exposed parts of concrete structures such as roofs of buildings, parking lots, underground interior and exterior walls, bridges, dams, etc., because cracks caused by water film do not occur when used in decoration. 60 to 68% by weight of acrylic emulsions for general purposes such as steel structures, wood structures, fiber reinforced plastics (FRP) structures, styrofoam, tiles and stones 10-14% by weight cement, 10-14% by weight quicklime, 1.0-1.6% by weight microcement, alumina cement 1 .0 to 1.6 wt%, 0.4 to 0.8 wt% of fastening cement, 0.4 to 0.8 wt% of antifoaming agent, 0.4 to 0.8 wt% of glidant, 0.4 to 0.8 wt% of blowing agent, 0.2 to 0.4 wt% of waterproofing powder resin, 0.2 to 0.4 per branch It provides a cement-containing polymer-based elastomeric waterproofing agent consisting of; wt% and 6.0 to 6.8 wt% of silica sand.
Description
The present invention relates to a cement-based polymer-based elastic waterproof agent, and more particularly, by applying to a structure that requires waterproof and leak-proof structure, as well as a waterproof function to prevent water from penetrating the structure, as well as excellent chemical resistance, weather resistance, crack resistance It has high impact strength, hydrophilicity and high tensile strength, and especially water-based, so that no crack occurs due to water film during the decoration. Therefore, it is exposed to concrete structures such as rooftops, parking lots, underground interior walls, bridges, dams, etc. It can be used for waterproofing the area, and is not limited to steel structures, wood structures, fiber reinforced plastics (FRP) structures, styrofoam, tiles and stones in various fields. It relates to a cement-containing polymer elastic waterproofing agent applicable to the purpose.
In general, concrete has a lot of bubbles are formed in the interior, so the waterproof ability is weak, so that various kinds of waterproofing work is performed to prevent the penetration of water and leakage.
That is, in the building, waterproofing is performed according to the concrete construction surface or the material used to perform waterproofing operations classified into asphalt waterproofing, sheet waterproofing, mortar waterproofing, sealing agent waterproofing, and waterproofing of the coating film.
A waterproofing agent is used for the waterproofing operation, and the waterproofing agent is mixed with cement, asphalt, calcium chloride, fatty acid soap, synthetic rubber, natural rubber, vinyl acetate, vinyl chloride, acrylate ester, and the like to increase water tightness according to chemical change. There is something.
And it is used as a method of preventing the penetration of moisture into the concrete by using a paint waterproofing agent as described above.
Waterproofing business using such waterproofing agent should not only adversely affect other properties of the concrete, but also prevent the behavior of buildings or micro-cracks caused by temperature changes and vibrations while improving the waterproofing effect.
In addition, there is a method in which a liquid coating film is applied by mixing or mixing a material to which a heating, hydrosetting, or two-liquid curing chemical substance is added in situ.
The above-described materials (mainly heated asphalt, room temperature asphalt, chloroprene, polyurethane, etc.) are cured at the same time as curing and form a smooth surface. Such a material is excellent in elasticity and may be used as a function of protecting it by being installed at a crack or a joint part.
And under the conditions of use and exposure, the elongation capacity of a particular material or system may vary depending on the elongation of the material, the thickness of the coating to be formed, the length of the coating material between the unattached portions of both cracks and gaps.
The above-mentioned waterproof coatings are a method of forming a film having a specific thickness of non-specificity through crosslinking of urethane and polyisocyanate in the form of a polymer-based organic sole, and a cement-containing polymer coating waterproofing agent having a mixed form of inorganic and organic. The system is composed of cement as a main component, and the organic system is a mixture of water-soluble emulsions in which an oily liquid is emulsified in water (O / W) or water is emulsified in an oily liquid (W / O) using various emulsifiers. Cement hydration reaction by moisture, the method of bonding cement particles and spherical polymer to form a continuous coating to form a solid non-specific coating, and also to transfer the liquid or solid form of asphalt (rubber-based asphalt, emulsified asphalt) in the field Structure coating from external moisture and various physical actions by treatment and coating on the surface To protect the
As described above, various waterproofing agents have been developed and used to protect concrete structures or structures, and have strong adhesive strength with concrete, excellent waterproofing and weather resistance, and have no neutral chemical reactions, and thus have the same alkalinity as concrete without material separation. There is a polymer cement-based inorganic coating waterproofing agent.
The polymer cement-based inorganic film waterproofing agent is close to the paint waterproofing agent, but may be classified as a waterproofing agent having a chemical reaction due to the addition of cement, thereby increasing the watertightness.
The polymer cement-based inorganic film waterproofing agent is composed of cement, acrylic sand, ceramic mineral, etc., cement-compatible acrylic emulsion polymer, which is mixed with the powder component. There is a problem that the composition should be prepared, but the mixing ratio of the materials is not constant, and the stirring and mixing are neglected, resulting in a non-uniform composition.
Korean Utility Model Model No. 20-0175730 proposed as a solution for such a problem is 20 to 50 parts by weight of water-dispersible acrylic emulsion having 10 to 30 parts by weight of Portland cement or blast furnace cement and 40 to 50 parts by weight of solid content. , 30-60 parts by weight of silica siliceous sand of 160 mesh or less, sodium fluoride as a curing retardant, oxycarboxylic acid and its salt, sodium gluconate, sucrose, polysaccharide, sugar alcohol 0.5-1.5 parts by weight, water 1 ~ 10 parts by weight, color additives and thickeners, preservatives, heat aging inhibitors, ozone inhibitors, UV stabilizers are 0.5 to 5 by weight ratio, but the disadvantage of the prior art is the various types of curing delays that inhibit the hydration reaction In terms of the use of a chemical agent and consequently in the field of mixing and stirring the admixture (emulsion polymer) and powder (inorganic powder) in the field, The abuse of unnecessary materials has the disadvantage of increasing cost.
In addition, domestic patent registration No. 10-0406212, 35-55 parts by weight of water is heated to 40-50 ℃, emulsified and dispersed by adding 5-10 parts by weight of nonionic surfactant and 40-60 parts by weight of calcium stearate Preparing a emulsion A agent by mixing with 180 to 200 parts by weight of an acrylic emulsion resin copolymer; And B agent prepared by mixing 50 to 70 parts by weight of No. 7 silica sand, 5 to 9 parts by weight of chromium oxide, and 0.1 to 0.5 parts by weight of polyoxyethylene lauryl ether, in 100 parts by weight of white portant cement. Mixing in a 0.25 weight ratio is suggested, but this prior art is the same as the prior art in that it is difficult for the user to make the emulsion A agent directly, and consequently, mixing and stirring in the field is performed.
In addition, Korean Patent Registration No. 10-0661210 is composed of a liquid binder mainly composed of a silicone emulsion, and a powder containing cement and aggregate; The content of the silicone emulsion is an active content of 4 to 17% by weight relative to the cement weight, the mixing ratio of the cement and aggregate is 1: 0.5 ~ 1: 5 by weight ratio, stabilizing the matrix structure of the cement It is suggested that the co-binder is added in the range of 6 to 16% by weight relative to the cement.
Therefore, according to the above prior art, acrylic or silicone emulsion is used as a admixture, and various additives are added to improve the performance of cement-based powder (inorganic powder) and various hydration reactions and water repellency, chemical resistance, tensile strength, and the like. It can be said that they are the same in that they are used for mixing and stirring the products at the construction site.
The present invention has been made on the basis of the contents of the prior art described above, the object of which is to prepare the liquid material and other materials in the powder state in a separate circular barrel more simply to mix the contents of the two circular cylinders in use The present invention provides a cement-containing polymer-based elastic waterproofing agent that improves the user's convenience so that anyone can mix and dilute and use the same.
In addition, another object of the present invention is to prevent water from penetrating the structure by mixing acrylic emulsion, cement and other materials in the construction site of the structure that needs waterproof and leak prevention, as well as excellent chemical resistance And weathering resistance, crack resistance, impact resistance and hydrophilicity, and a cement-containing polymer elastic waterproofing agent having high tensile strength.
In addition, another object of the present invention is to comply with the test items specified in the Korea Industrial Standard (KSF4919-"cement-containing polymer coating film waterproofing agent"), in particular in terms of the construction of concrete structures by greatly improving the tensile strength and elongation rate An object of the present invention is to provide a cement-containing polymer-based elastomeric waterproofing agent having excellent performance not separated or separated.
In addition, another object of the present invention is to use the cement-based inorganic powder shrinkage and expansion with the concrete, it is possible to easily prevent the corrosion of the concrete by discharging the moisture of the concrete to the outside to extend the life of the building It is to provide a cement-containing polymer-based elastic waterproof agent that can be extended.
Cement-containing polymer elastic waterproofing agent of the present invention for achieving the above object 60 to 68% by weight of acrylic emulsion, 10 to 14% by weight of general cement, 10 to 14% by weight of quicklime, 1.0 to 1.6% by weight of microcement, alumina cement 1.0 to 1.6% by weight, 0.4 to 0.8% by weight of cement, 0.4 to 0.8% by weight of defoaming agent, 0.4 to 0.8% by weight of glidant, 0.4 to 0.8% by weight of expanding agent, 0.2 to 0.4% by weight of waterproofing powder resin, 0.2 to 0.4% by weight And 6.0 to 6.8% by weight of silica sand.
The cement-containing polymer elastic waterproofing agent of the present invention made as described above may be diluted by adding and diluting a powder content of a pre-weighed and packaged powder to an acrylic emulsion for immediate use at a construction site. Since it does not have a problem of losing the function of the waterproofing agent, it can be easily used by any inexperienced worker or anyone, and has the effect of diluting and using the same elastic waterproofing agent of excellent quality regardless of the environment or skilled workers in the work site. .
In addition, it has superior tensile strength and elongation rate than the standard of tensile strength and elongation rate set by the Korean Industrial Standard, so it is not only waterproof, but also excellent in chemical resistance, weather resistance, crack resistance and resistance to water penetration. There is an effect of impact resistance, and hydrophilicity and high tensile force.
In addition, the use of cement-based inorganic powder shrinks and expands with the concrete, and can easily prevent the corrosion of the concrete by easily discharging the moisture of the concrete to the outside, thereby extending the life of the building. .
Hereinafter, the cement-containing polymer elastic waterproofing agent according to a preferred embodiment of the present invention will be described in detail.
Cement-containing polymer elastic waterproofing agent according to an embodiment according to the present invention, acrylic emulsion 60 to 68% by weight, general cement 10 to 14% by weight, quicklime 10 to 14% by weight, micro cement 10 to 14% by weight, alumina cement 1.0 to 1.6% by weight, 0.4 to 0.8% by weight of cement, 0.4 to 0.8% by weight of defoaming agent, 0.4 to 0.8% by weight of glidant, 0.4 to 0.8% by weight of expanding agent, 0.2 to 0.4% by weight of waterproofing powder resin, 0.2 to 0.4% by weight % And 6.0 to 6.8% by weight of silica sand.
The cement-containing polymer-based elastic waterproof agent according to the present embodiment as described above comprises preparing 60 to 68% by weight of the acrylic emulsion in the liquid state in the first circular cylinder, and 10 to 14% by weight of the general cement in the powder state in the second circular cylinder. , 10 to 14% by weight quicklime, 1.0 to 1.6% by weight microcement, 1.0 to 1.6% by weight alumina cement, 0.4 to 0.8% by weight fastener, 0.4 to 0.8% by weight defoaming agent, 0.4 to 0.8% by weight glidant, 0.4 to 0.8% expanding agent Preparing 0.8% by weight, 0.2 to 0.4% by weight of the waterproof powder resin, 0.2 to 0.4% by weight and 6.0 to 6.8% by weight of silica sand, and pouring the contents prepared in the second round barrel into the first round barrel It is prepared through the dilution for 3 to 5 minutes with a blender.
The cement-containing polymer-based elastic waterproofing agent of the present embodiment manufactured through the above process is 64% by weight of acrylic emulsion, 12% by weight of general cement, 12% by weight of quicklime, 1.3% by weight of microcement, 1.3% by weight of alumina cement, and 0.6 of fastening cement. It is most preferable that the weight percent, 0.6 weight percent antifoaming agent, 0.6 weight percent of fluidizing agent, 0.6 weight percent of expanding agent, 0.3 weight percent of waterproofing powder resin, 0.3 weight percent per branch and 6.4 weight percent of silica sand.
In the cement-containing polymer-based elastic waterproof agent according to the present embodiment made as described above, the above-mentioned acrylic emulsion is a common one, and a mixture of water, a surfactant, an acrylic resin copolymer, and the like is used. The acrylic emulsion has excellent abrasion resistance, It is known to be excellent in weather resistance, crack resistance, impact resistance and strength.
In addition, in order to maximize the watertightness and permeability, and to increase the durability and strength, the microcement preferably uses a microcement (aka: Misem 8000) having a powder degree of 8000 cm 2 / g or more.
And the general cement is made of portland cement or blast furnace cement of the powder degree 3000㎠ / g
In addition, the quicklime is used for a smooth hydration reaction.
In addition, the superplasticizer is used to disperse the cement particles as a mixture to soften the concrete. A lubricating film is formed between the particles to reduce the mutual adhesion between the components, thereby changing the quality of the blended or hardened concrete. It will greatly improve the fluidity without making it.
Applicant has confirmed through experiments that various fluidizing agents including commonly known CMC-PC, Peramin SMF30, Peramin Conpac 149S and the like can be used. In addition to the fluidizing agents of the kind set forth above, the use of other fluidizing agents is also possible. The use of such a fluidizing agent is chemically stable, making it easy to manufacture high-strength concrete, and there is an effect of almost no slump loss.
In addition, the antifoaming agent is used to suppress the foaming to control the amount of air and to reduce the function of bubbles. This makes it possible to ensure the stability of the quality, there is an effect to enhance the strength.
Applicant has confirmed through experiments that a variety of antifoaming agents including commonly known Agitan 295, Agitan P803, Agitan P833 and the like can be used. Of course, it is also possible to use other antifoaming agents as well as the above-mentioned antifoaming agents.
In addition, the expander is used to expand the cement as a material to inflate bubbles. In the present invention, various types of expanding agents generally known may be used.
In addition, the alumina cement has corrosion resistance and fire resistance and is used to have a quickness such as the action of the quick cement because the time between mixing with water and curing is short.
The waterproof powder resin is a compound of vinyl chloride, ethylene, ethylene, vinyl laurate, and polyvinyl alcoho, which increases flexibility and elasticity when mixed with the cements. Is of course used to have the effect of waterproofing.
In addition, the sugars are used to increase the adhesion between the mixture and at the same time to soften the material.
And the silica sand is used to increase the strength by reinforcing the strength.
Referring to the action and effect of the cement-containing polymer-based elastic waterproof agent according to the present embodiment made as described above in detail.
In order to configure the cement-containing polymer-based elastic waterproofing agent according to the present embodiment, first, a commercial acrylic liquid emulsion is prepared.
In addition, microcement (Meisem 8000), quicklime, acrylic emulsion, general cement, alumina cement, and quickening cement which are not chemically reacted with each other are prepared in a small package in advance, and each of the additives (fluiding agent, antifoaming agent, expanding agent, waterproofing powder) is prepared. Resin, fat, and silica sand are also packaged together.
In addition, each of the above materials are weighed by 64% by weight of acrylic emulsion, 12% by weight of general cement, 12% by weight of quicklime, 1.3% by weight of microcement, 1.3% by weight of alumina cement, 0.6% by weight of cement, 0.6% by weight of antifoaming agent, fluidization After preparing to 0.6% by weight, 0.6% by weight of expanding agent, 0.3% by weight of waterproofing powder resin, 0.3% by weight of paper and 6.4% by weight of silica sand, the liquid acrylic emulsion is placed in a first round cylinder, the microcement of the remaining powder state, Alumina cement, general cement, quickened cement, quicklime, waterproof powder resin, fluidizing agent, antifoaming agent, expanding agent, land sugar, silica are put in the second round barrel and the lid is closed and stored.
At this time, it is preferable that each circular cylinder is sealed, and it is preferable that a 1st circular cylinder has a volume 2 times or more than a 2nd circular cylinder.
The reason for using the circular cylinder in the above is to ensure a smooth dilution in the dilution process using an electric mixer.
In addition, when the antifoaming agent and the expanding agent is in a liquid state rather than a powder state, it should be stored in a first round cylinder.
As described above, the first and second circular barrels containing the prepared contents are transported to the site to be constructed, and cleaned using a high pressure sprayer to remove foreign substances from the construction surface of the concrete structure to be constructed.
Thereafter, the contents contained in the second round barrel are poured into the first round barrel, and then diluted with an electric mixer of RPM 600 or more for 3 minutes to 5 minutes to prepare a cement-containing polymer-based elastic waterproof agent so that there is no lumped powder.
The cement mixed polymer-based elastic waterproofing agent may be applied to a thickness of about 2 to 4 mm by using equipment such as a brush, a roller, or a nozzle on a construction surface of a concrete structure, and dried at room temperature for 3 to 4 hours to complete waterproof construction.
In addition, if necessary, a separate coating may be further applied to the surface of the dried waterproofing agent.
As described above, the present invention is a cement-containing polymer system having excellent chemical resistance, weather resistance, crack resistance, impact resistance and hydrophilicity and high tensile strength as well as a waterproof function that prevents water from penetrating perfectly without breaking even in cracking and behavior of concrete structures. Provide an elastic waterproofing agent.
Claims (2)
General cement 10 to 14% by weight;
10 to 14 weight percent quicklime;
1.0 to 1.6 weight percent of microcement;
1.0 to 1.6% by weight of alumina cement;
0.4 to 0.8 wt% quenched cement;
Antifoaming agent 0.4-0.8 wt%;
Glidant 0.4 to 0.8 wt%;
0.4 to 0.8 weight percent expanding agent;
Waterproof powder resin 0.2 to 0.4% by weight;
0.2 to 0.4 weight percent per land;
6.0-6.8 weight percent of silica sand; Cement-containing polymer elastic waterproof agent, characterized in that consisting of
The acrylic emulsion is 64% by weight;
The general cement is 12% by weight;
The quicklime is 12% by weight;
The microcement is 1.3% by weight;
The alumina cement is 1.3 wt%;
The quick cement is 0.6 wt%;
The antifoaming agent was 0.6 wt%;
The glidant is 0.6% by weight;
The expanding agent is 0.6% by weight;
The waterproof powder resin is 0.3% by weight;
The land mass is 0.3% by weight;
Said silica sand 6.4 weight%; Cement-containing polymer elastic waterproof agent, characterized in that consisting of
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020100042887A KR101110704B1 (en) | 2010-05-07 | 2010-05-07 | Cement-polymer modified waterproof coatings |
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| KR1020100042887A KR101110704B1 (en) | 2010-05-07 | 2010-05-07 | Cement-polymer modified waterproof coatings |
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| KR20110123412A KR20110123412A (en) | 2011-11-15 |
| KR101110704B1 true KR101110704B1 (en) | 2012-02-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160150224A (en) | 2015-06-19 | 2016-12-29 | 서울과학기술대학교 산학협력단 | Cement-polymer modified waterproof coatings and preparation method thereof |
| US11859097B2 (en) * | 2018-02-28 | 2024-01-02 | Green Solution Llc | Functional aqueous paint composition having incombustibility, flame resistance, heat shielding, heat insulation and dew condensation prevention effects |
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|---|---|---|---|---|
| KR0143810B1 (en) * | 1995-11-21 | 1998-07-15 | 송건정 | Method for producing moisture permeable waterproof coating |
| KR200175730Y1 (en) | 1999-10-16 | 2000-03-15 | 임춘기 | Paint film water proofing agent |
| KR100507383B1 (en) | 2002-12-24 | 2005-08-09 | 주식회사 케미콘 | Paints composition for protecting a surface of concrete structure using redispersibility polymer |
| KR100956955B1 (en) | 2009-08-06 | 2010-05-11 | 하태훈 | Cement-polymer modified waterproof coatings and preparation method thereof |
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2010
- 2010-05-07 KR KR1020100042887A patent/KR101110704B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR0143810B1 (en) * | 1995-11-21 | 1998-07-15 | 송건정 | Method for producing moisture permeable waterproof coating |
| KR200175730Y1 (en) | 1999-10-16 | 2000-03-15 | 임춘기 | Paint film water proofing agent |
| KR100507383B1 (en) | 2002-12-24 | 2005-08-09 | 주식회사 케미콘 | Paints composition for protecting a surface of concrete structure using redispersibility polymer |
| KR100956955B1 (en) | 2009-08-06 | 2010-05-11 | 하태훈 | Cement-polymer modified waterproof coatings and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160150224A (en) | 2015-06-19 | 2016-12-29 | 서울과학기술대학교 산학협력단 | Cement-polymer modified waterproof coatings and preparation method thereof |
| US11859097B2 (en) * | 2018-02-28 | 2024-01-02 | Green Solution Llc | Functional aqueous paint composition having incombustibility, flame resistance, heat shielding, heat insulation and dew condensation prevention effects |
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| KR20110123412A (en) | 2011-11-15 |
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