KR100911974B1 - Crack repair agent composition for construction and engineering structure and method of construction for repairing crack - Google Patents
Crack repair agent composition for construction and engineering structure and method of construction for repairing crack Download PDFInfo
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- KR100911974B1 KR100911974B1 KR1020080054276A KR20080054276A KR100911974B1 KR 100911974 B1 KR100911974 B1 KR 100911974B1 KR 1020080054276 A KR1020080054276 A KR 1020080054276A KR 20080054276 A KR20080054276 A KR 20080054276A KR 100911974 B1 KR100911974 B1 KR 100911974B1
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/26—Carbonates
- C04B14/28—Carbonates of calcium
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- 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
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- 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
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- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0045—Polymers chosen for their physico-chemical characteristics
- C04B2103/0062—Cross-linked polymers
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00025—Aspects relating to the protection of the health, e.g. materials containing special additives to afford skin protection
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/10—Compositions or ingredients thereof characterised by the absence or the very low content of a specific material
- C04B2111/1006—Absence of well-defined organic compounds
- C04B2111/1012—Organic solvents
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
Abstract
Description
본 발명은 건축 토목 구조물의 균열 보수제 조성물 및 이를 이용한 균열 보수 공법에 관한 것이다. The present invention relates to a crack repair composition of construction civil engineering structures and a crack repair method using the same.
일반적으로 해상의 교량이나 잔교 등 각종 건축 토목 구조물은 내구 연한의 도래, 외부의 환경 변화, 충격 및 열화현상에 의한 철재 및 콘트리트 표면이 부식되어 균열이 유발된다. 이와 같이 구조물의 내력이 심각한 손상이 야기되어 이를 방지하기 위한 수단으로서 아크릴 에멀젼을 이용하는 보수, 보강 공법이 안출되었다.In general, various civil engineering structures such as bridges and bridges on the sea are corroded due to corrosion of steel and concrete surfaces due to the advent of durability, external environmental changes, impacts and degradation. As a result, the damage of the structure caused serious damage, and a repair and reinforcement method using the acrylic emulsion was devised as a means to prevent the damage.
그런데, 상기 아크릴 에멀젼을 이용하면, 아크릴 에멀젼은 내수성이 약하여 약간의 습기에도 접착력이 크게 저하되고 건조후에도 물에 대한 저항성이 매우 약하여 적은 양의 물을 흡수하여도 균열 보수제의 성능이 저하되어 크랙 및 들뜸 현상이 발생된다. 따라서 이러한 문제점을 감안하여 아크릴 에멀젼은 건조한 장소와 마지막 형성시에만 제한적으로 사용되고 있다.However, when the acrylic emulsion is used, the acrylic emulsion has a weak water resistance, greatly reduces adhesion to slight moisture, and is very weak to water even after drying, so that even if a small amount of water is absorbed, the performance of the crack repair agent decreases, resulting in cracks and Lifting phenomenon occurs. Therefore, in view of these problems, acrylic emulsions are used only in a dry place and at the last formation.
또한 아크릴 에멀젼은 석유계 용제, 휘발성 용제 등에 용해하여 사용하므로 흐름 저항성은 우수하지만 아크릴 에멀젼과의 상용성이 떨어지고, 작업시 냄새가 심해서 밀폐 공간이나 환기가 잘 안되는 장소에서는 작업하기가 곤란하다는 문제점이 있다. 이러한 문제점으로 인하여 아크릴 에멀젼의 고유 특성인 모체와의 접착력, 크랙 저항성, 무해성 및 환경친화적인 장점이 많이 부각되지 못하는 실정이다. In addition, acrylic emulsions are excellent in flow resistance because they are dissolved and used in petroleum solvents and volatile solvents, but they are not compatible with acrylic emulsions and are difficult to work in confined spaces or poorly ventilated places due to their bad smell. have. Due to these problems, many of the inherent properties of acrylic emulsions, such as adhesion with the matrix, crack resistance, harmlessness and environmentally friendly advantages, are not highlighted.
이에 본 발명이 이루고자 하는 기술적 과제는 상술한 문제점을 해결하여 내수성이 개선되고 습기면에서도 사용이 가능할 뿐만 아니라 접착력이 우수한 건축 토목 구조물의 균열 보수제 조성물 및 이를 이용한 균열 보수 공법에 관한 것이다.Accordingly, the technical problem to be achieved by the present invention is to solve the above problems and to improve the water resistance and use in terms of moisture as well as to provide a crack repair composition and a crack repair method using the same for building civil engineering structures having excellent adhesion.
상기 기술적 과제를 이루기 위하여 본 발명에서는, 아크릴 에멀젼 40~60중량부; 충진제 50~70중량부; 증점제 0.1~2중량부; 증점보조제 0.1~0.5중량부; pH조절제 0.01~0.2중량부; 가교촉진제 0.1~1중량부; 가소제 0.01~0.5중량부; 및 0.5~3중량부의 흐름저항성 물질;을 포함하는 건축 토목 구조물의 균열 보수제 조성물을 제공한다.In the present invention, 40 to 60 parts by weight of an acrylic emulsion; 50 to 70 parts by weight of filler; Thickener 0.1 to 2 parts by weight; Thickening aid 0.1 to 0.5 parts by weight; 0.01 to 0.2 parts by weight of pH regulator; 0.1-1 weight part of crosslinking accelerator; 0.01 to 0.5 parts by weight of a plasticizer; And 0.5 to 3 parts by weight of a flow resistant material.
상기 아크릴 에멀젼에서 고형분의 함량은 40 내지 70 중량%이고, 아크릴 에멀젼의 pH 6.5~8.5, 점도가 100~300cps, 아크릴 에멀젼 입자 직경이 0.2㎛ 이하이다.The content of solids in the acrylic emulsion is 40 to 70% by weight, the pH of the acrylic emulsion is 6.5 ~ 8.5, the viscosity is 100 ~ 300cps, the acrylic emulsion particle diameter is 0.2㎛ or less.
상기 충진제는 탄산칼슘이고, 경도 2 내지4, 평균입경 9 내지11㎛, 수분 0.2이하, 진비중 2.6~2.7, 마모드 50mg이하인 것이 바람직하다. The filler is calcium carbonate, preferably 2 to 4 in hardness, 9 to 11 µm in average particle size, 0.2 or less in water, 2.6 to 2.7 in specific gravity, and 50 mg or less in mamod.
상기 증점제는 고형분 25±1%, 밀도가 1.02~1.06g/㎤인 음이온성 특성을 갖고, 상기 증점보조제는 메틸셀룰로오즈인 것이 바람직하다. The thickener has an anionic property of 25 ± 1% solids, the density is 1.02 ~ 1.06g / cm3, the thickener is preferably methyl cellulose.
상기 가교촉진제는 폴리포스페이트 및 글리콜 아세테이트계로 이루어진 군으로부터 선택된 하나 이상이다. The crosslinking promoter is at least one selected from the group consisting of polyphosphate and glycol acetate.
상기 가소제는 폴리프로필렌 글리콜인 것이 바람직하다. It is preferable that the said plasticizer is polypropylene glycol.
상기 흐름 저항성 물질은 함수율 8~12%, pH 8~10, 비중 2.2~2.5인 것이 바람직하다.The flow resistant material is preferably 8 to 12%, pH 8 to 10, specific gravity 2.2 to 2.5.
본 발명의 다른 기술적 과제는 건축 토목 구조물의 표면의 열화부를 제거하는 단계; 및 Another technical problem of the present invention is to remove the deterioration of the surface of the building civil engineering structure; And
상기 열화부가 제거된 상기 건축 토목 구조물의 표면 상부에 아크릴 에멀젼 40~60중량부, 충진제 50~70중량부, 증점제 0.1~2중량부, 증점보조제 0.1~0.5중량부, pH조절제 0.01~0.2중량부, 가교촉진제 0.1~1중량부, 가소제 0.01~0.5중량부 및 흐름저항성 물질 0.5~3중량부를 혼합한 건축 토목 구조물의 균열 보수제 조성물을 도포 및 건조하여 균열 보수막을 형성하는 단계를 포함하는 건축 토목 구조물의 균열 보수 공법에 의하여 이루어진다.40 to 60 parts by weight of acrylic emulsion, 50 to 70 parts by weight of filler, 0.1 to 2 parts by weight of thickener, 0.1 to 0.5 parts by weight of thickener, 0.01 to 0.2 parts by weight of pH adjusting agent Building civil engineering structure comprising the steps of applying and drying a crack repair composition of a building civil engineering structure comprising 0.1 to 1 part by weight of crosslinking accelerator, 0.01 to 0.5 part by weight of plasticizer and 0.5 to 3 parts by weight of flow resistant material By the crack repair method.
본 발명의 건축 토목 구조물의 균열 보수제 조성물은 아크릴계 1액형 균열 보수제이므로 제조하기가 용이하고, 내수성 및 내알칼리성이 뛰어나고 접착강도 및 내균열 추종성이 우수하다. 그리고 이 조성물은 습기면이나 물 접촉이 많은 장소의 균열 보수제로 특히 유용하다. 그리고 석유 용제, 휘발성 용제가 전혀 포함되어 있지 않으므로 환경 친화적이고 인체에 무해한 균열 보수제이다. The crack repair composition of the building civil engineering structure of the present invention is easy to manufacture because it is an acrylic one-component crack repair agent, and has excellent water resistance and alkali resistance, and excellent adhesive strength and crack resistance. And this composition is especially useful as a crack repair agent in a place with a lot of moisture surface or water contact. And since it contains no petroleum solvents or volatile solvents, it is an environmentally friendly and harmless crack repair agent.
본 발명의 건축 토목 구조물의 균열 보수제 조성물을 이용하여 균열보수를 실시하면, 구조물의 유지 보수의 기간이 연장되고 균열 부위와 균열 보수제 조성물간의 접착성이 매우 증대된다.When the crack repair is performed using the crack repair composition of the building civil engineering structure of the present invention, the maintenance period of the structure is extended and the adhesion between the crack site and the crack repair composition is greatly increased.
이하, 본 발명을 보다 상세하게 설명하기로 한다.Hereinafter, the present invention will be described in more detail.
본 발명의 건축 토목 구조물의 균열 보수제 조성물은 수용성 아크릴계 1액형 조성물로서, 아크릴 에멀젼, 충진제, 증점제, 증점보조제, pH조절제, 가교촉진제 , 가소제 및 흐름저항성 물질로 이루어진다.The crack repair composition of the building civil engineering structure of the present invention is a water-soluble acrylic one-component composition, which is composed of an acrylic emulsion, a filler, a thickener, a thickener, a pH regulator, a crosslinking accelerator, a plasticizer, and a flow resistant material.
상기 아크릴 에멀젼에서 아크릴계 수지 에멀젼의 입자 지경경이 0.2㎛ 이하, 특히 0.05 내지 0.2㎛이다. 이러한 입경 범위를 가짐으로써 아크릴 에멀젼 입자가 구조물의 공극내에 깊이 침투하여 구조물내의 공극을 충진시켜 준다.The particle diameter of the acrylic resin emulsion in the acrylic emulsion is 0.2 μm or less, in particular 0.05 to 0.2 μm. By having such a particle size range, the acrylic emulsion particles penetrate deep into the pores of the structure to fill the pores in the structure.
상기 아크릴 에멀젼을 구성하는 아크릴계 수지로는 특히 아크릴계 코폴리머를 사용한다. 이러한 아크릴계 코폴리머의 구체적인 예로서, 하이드록시에틸아크릴레이트, 히드록시에틸메타크릴레이트, 에틸헥사아크릴레이트, 부틸아크릴레이트, 부틸메타크릴레이트중에서 선택된 2개의 반복단위로 이루어진 코폴리머, 또는 하이드록시에틸아크릴레이트, 히드록시에틸메타크릴레이트, 에틸헥사아크릴레이트, 부틸아크릴레이트, 부틸메타크릴레이트중에서 선택된 제1반복단위와 스티렌 제2반복단위를 포함하는 코폴리머를 사용한다. 이 코폴리머에서 제1반복단위와 제2반복단위의 혼합비는 제1반복단위 60~95 중량%와 제2반복단위 5~40 중량%이다. As the acrylic resin constituting the acrylic emulsion, an acrylic copolymer is particularly used. As a specific example of such an acrylic copolymer, a copolymer consisting of two repeating units selected from hydroxyethyl acrylate, hydroxyethyl methacrylate, ethyl hexaacrylate, butyl acrylate and butyl methacrylate, or hydroxyethyl A copolymer comprising a first repeating unit and a styrene second repeating unit selected from acrylate, hydroxyethyl methacrylate, ethyl hexaacrylate, butyl acrylate and butyl methacrylate is used. The mixing ratio of the first repeating unit and the second repeating unit in the copolymer is 60 to 95 wt% of the first repeating unit and 5 to 40 wt% of the second repeating unit.
본 발명에서 사용되는 아크릴계 에멀젼은 고형분의 함량이 60 내지 80 중량%으로 매우 높고, pH 6.5~8.5에서 안정하며 점도가 100~300cps이다. 이와 같이 본 발명에서 사용되는 아크릴 에멀젼은 기존의 에멀젼보다 고형분 함량이 높아 아크릴에멀젼의 물리적 및 화학적 성능이 뛰어나고 경화가 빨라 보수제의 경화시간을 단축시키고 내균열 추종성, 접착강도 및 내수성,내알카리성이 우수한 특성을 가지고 있다. The acrylic emulsion used in the present invention has a very high solids content of 60 to 80% by weight, is stable at pH 6.5 to 8.5, and has a viscosity of 100 to 300 cps. As described above, the acrylic emulsion used in the present invention has a higher solids content than the conventional emulsion, so that the physical and chemical performance of the acrylic emulsion is excellent and the curing is shortened, thereby shortening the curing time of the repair agent, and excellent in crack-tracking resistance, adhesive strength and water resistance, and alkali resistance. Has characteristics.
상기 아크릴 에멀젼의 함량은 40~60 중량부이다. 만약 아크릴 에멀젼의 함량이 40 중량부 미만이면, 물리적, 화학적 성능이 기대에 미치지 못하여 접착강도 저하 및 내수성,내알카리성이 떨어지고 습기면에서의 사용이 곤란하게 되고 60중량부를 초과하면, 물리적, 화학적 성능은 우수하나 원부재료 가격이 상승하여 타제품들과의 경쟁력이 떨어지고, 수분량이 많아져 경화시간이 지연되어 공사기간의 길어지는 단점이 있다. The content of the acrylic emulsion is 40 to 60 parts by weight. If the content of acrylic emulsion is less than 40 parts by weight, the physical and chemical performance is less than expected, so that the adhesive strength is lowered and the water resistance and alkali resistance are poor, and it is difficult to use in moisture. Is excellent, but the price of raw and subsidiary materials rises, which makes it less competitive with other products.
본 발명에서 사용하는 충진제는 50~70중량부을 사용하고 균열 보수제에서 통상적으로 사용하는 탄산칼슘염, 황산바륨, 벤토나이트, 규사를 사용할 수 있지만, 본 발명에서는 탄산칼슘염을 사용하였다. The filler used in the present invention may be 50 to 70 parts by weight, and calcium carbonate salt, barium sulfate, bentonite, and silica sand which are commonly used in crack repair agents may be used, but in the present invention, calcium carbonate salt was used.
만약 충진제의 함량이 50중량부 미만이면 상대적으로 아크릴에멀젼의 함유량이 높아져 균열 보수제의 가격 경쟁력이 저하되고 수분함유량이 높아져 경화시간이 길어지는 단점이 있으며 70중량부를 초과하면, 균열 보수제의 점도가 높아져 작업성이 매우 떨어지고 물리적, 화학적 기능이 저하되는 단점이 있다. If the content of the filler is less than 50 parts by weight, the content of the acrylic emulsion is relatively high, so that the price competitiveness of the crack repair agent is lowered, the moisture content is increased, and the curing time is long. When the content of the filler exceeds 70 parts by weight, the viscosity of the crack repair agent is increased. There is a disadvantage in that workability is very poor and physical and chemical functions are degraded.
본 발명에서 사용하는 탄산칼슘은 경도 2 내지 4 특히 약 3, 평균 입경 9 내지 11㎛, 수분 0.2 이하 특히 0.001 내지 0.2, 진비중 2.6~2.7, 마모도 50㎎ 이하, 특히 0.01 내지 50mg인 특성을 갖는 것을 사용한다.The calcium carbonate used in the present invention has a hardness of 2 to 4 particularly about 3, an average particle diameter of 9 to 11 μm, a moisture of 0.2 or less, in particular 0.001 to 0.2, a specific gravity of 2.6 to 2.7, abrasion of 50 mg or less, especially 0.01 to 50 mg. Use it.
증점제는 아크릴 에멀젼의 점도를 높여주어 흐름 저항성을 향상시키면서 박리를 방지해주기 위하여 부가하는 첨가제로서, 그 함량은 0.1 내지 2 중량부이다. 만약 증점제의 함량이 0.1중량부 미만이면 충분한 점도 상승을 기대할 수 없고, 2중량부를 초과하면 균열 보수제의 고점도화로 작업성이 저하되어 바람직하지 못하다.The thickener is an additive added to increase the viscosity of the acrylic emulsion to prevent peeling while improving flow resistance, and the content thereof is 0.1 to 2 parts by weight. If the content of the thickener is less than 0.1 part by weight, a sufficient increase in viscosity cannot be expected. If the content of the thickener exceeds 2 parts by weight, the workability decreases due to the high viscosity of the crack repair agent, which is not preferable.
증점제의 구체적인 예로서, 셀룰로이스 에스테르계 물질로서, 알카리성에서 에멀젼의 점도를 상승시키는 효과가 있다. As a specific example of the thickener, as a cellulose ester-based material, there is an effect of increasing the viscosity of the emulsion in alkaline.
본 발명에서 사용한 아크릴 증점제는 고형분 25±1%이고 밀도가 1.02~1.06g/㎤, 특히 약 1.05g/㎤인 음이온성인 특성을 갖는다.The acrylic thickener used in the present invention has anionic properties of 25 ± 1% solids and a density of 1.02 to 1.06 g / cm 3, in particular about 1.05 g / cm 3.
증점보조제는 증점제의 기능을 한층 더 개선해주는 역할을 하며, 그 함량은 0.1～0.5중량부를 사용하는 것이 바람직하다. Thickening aid serves to further improve the function of the thickener, the content is preferably used 0.1 to 0.5 parts by weight.
증점보조제의 구체적인 예로서, 메틸 셀룰로이즈를 사용하며 증점 효과와 접착력을 증가시켜 주며 보습성이 향상되어 크렉 보수제의 물리적 성능을 향상시켜 준다. 또한 균열 보수제 조성물의 작업성을 증진시키는 윤활 특성을 가지고, 계면 활성 특성으로 인해 용액내 분산된 입자들의 안정성을 향상시켜 준다. As a specific example of thickening aid, methyl cellulose is used to increase the thickening effect and adhesion, and the moisture retention is improved to improve the physical performance of the crack repair agent. It also has lubricating properties that enhance the workability of the crack repair agent composition and improves the stability of the particles dispersed in the solution due to the surfactant properties.
만약 증점보조제의 함량이 0.1 중량부 미만이면 충분한 보습효과와 윤활특성을 기대할 수 없고, 0.5 중량부를 초과하면 고점도화로 작업성이 나빠지고 수분증발 속도가 지연되어 균열 보수제의 경화시간이 길어지므로 바람직하지 못하다.If the content of thickening aid is less than 0.1 parts by weight, sufficient moisturizing effect and lubrication properties cannot be expected. If it exceeds 0.5 parts by weight, it is not preferable because the workability is worsened due to high viscosity and the evaporation rate is delayed and the curing time of the crack repair agent is long. Can not do it.
본 발명에서 사용한 메틸셀룰로이즈는 순도가 98%이상이고 겉보기 비중이 250~350g/ℓ, 2% 수용액 점도가 12,000~18,000cps인 것을 특징으로 한다. The methyl cellulose used in the present invention is characterized by having a purity of 98% or more and an apparent specific gravity of 250-350 g / L and a 2% aqueous solution viscosity of 12,000-18,000 cps.
pH 조절제는 0.01~0.2 중량부를 사용하는 것이 바람직하며, pH를 조절해줌으로써 균열 보수제의 보관안정성과 혼화성 및 분산효과를 증진시켜 주는 효과가 있다. It is preferable to use 0.01 to 0.2 parts by weight of the pH adjusting agent, and by adjusting the pH, there is an effect of improving the storage stability, miscibility, and dispersion effect of the crack repair agent.
가교촉진제는 0.1~1 중량부를 사용하는 것이 바람직하며 균열 보수제내의 아크릴 입자들이 빠르게 가교결합되도록 촉진시켜 줌으로써 석유용제나 휘발성 용제에 수지를 용해하여 사용하는 제품들보다 늦게 경화되는 단점을 보완해주는 역할을 수행한다. It is preferable to use 0.1 to 1 parts by weight of the crosslinking accelerator, and it promotes the crosslinking of the acrylic particles in the crack repair agent so as to compensate for the disadvantages of curing later than those used by dissolving the resin in petroleum solvent or volatile solvent. To perform.
가교 촉진제로는 폴리포스페이트 및 글리콜 아세테이트계중에서 선택된 하나 이상이 사용될수 있으며, 실험에 의하여 효과 발현과 물성을 고려하여 적합한 것을 선정 할 수 있다. As the crosslinking accelerator, one or more selected from polyphosphate and glycol acetate may be used, and an appropriate one may be selected in consideration of effect expression and physical properties by experiment.
가소제의 함량은 0.01~0.5 중량부를 사용하는 것이 바람직하다. 가소제는 균열 보수제에 유연성을 부여하여 모체의 크랙이나 유동성 변화에도 박리나 흘러내림등을 방지하는 효과가 있으며 동결방지 효과도 가지고 있다. 또한 아크릴에멀젼의 가교결합에 있어 일정한 필름의 형성을 유지시켜 줌으로써 균열 보수제의 경화시 갈라짐이나 들뜸등을 억제하는 기능도 부여해 준다. It is preferable to use 0.01-0.5 weight part of content of a plasticizer. Plasticizers provide flexibility to crack repair agents to prevent peeling and dripping even when changing the mother's cracks or fluidity. In addition, by maintaining the formation of a constant film in the cross-linking of the acrylic emulsion, it also provides a function of suppressing cracking and lifting during curing of the crack repair agent.
만약 가소제의 함량이 0.01 중량부 미만으로 사용하면 상기의 기대효과를 충분히 만족하지 못하고 0.5 중량부를 초과하면 균열 보수제의 유연성이 너무 높아 인장강도가 저하되고 신장율이 높아져 처짐이나 흘러내림등을 일으킬수 있다. If the content of the plasticizer is less than 0.01 parts by weight, the above expected effects are not sufficiently satisfied. If the content of the plasticizer is more than 0.5 parts by weight, the flexibility of the crack repair agent is too high, the tensile strength is lowered and the elongation rate is increased, which may cause sagging or dripping. .
본 발명에서 사용한 가소제로는 활성도가 100%이고 점도가 60~80cps, 밀도 1.02g/㎤인 폴리프로필렌 글리콜을 사용한다.As the plasticizer used in the present invention, polypropylene glycol having an activity of 100%, a viscosity of 60 to 80 cps and a density of 1.02 g / cm 3 is used.
본 발명에서 사용되는 흐름저항성 물질은 힘이 작용할때는 쉽게 퍼지나 힘이 작용하지 않을 경우에는 처짐을 방지해 주는 기능을 가지고 있다. 또한 저장안정성이 뛰어나 균열 보수제의 보존기간을 연장시켜주는 특성도 가지고 있다. The flow resistant material used in the present invention is easily spread when the force is applied, but prevents sagging when the force is not applied It has a function. It also has excellent storage stability and extends the shelf life of crack repair agents.
흐름저항성 물질이 너무 적게 사용되면 기대되는 효과가 미비하며, 너무 많이 사용되면 제품의 경화시간을 지연시켜 접착력 저하를 가져올 수 있으며 원가상승 요인이 되므로 반복적 실험을 통해 적합한 사용량을 선정할 수 있다. If too little flow-resistant material is used, the expected effect is insignificant. If too much flow resistance material is used, it may delay the curing time of the product, which may lead to a decrease in adhesive strength, and it may increase the cost.
본 발명에서 사용한 흐름저항성 물질은, 함수율 8~12%, pH 8~10, 비중 2.2~2.5 특성을 갖는다. 그리고 흐름저항성 물질의 구체적인 예로서 (메톡시프로필아세테이트가 있다. The flow-resistant substance used in the present invention has water content of 8 to 12%, pH 8 to 10, and specific gravity of 2.2 to 2.5. And (methoxypropyl acetate) as a specific example of the flow resistant material.
본 발명의 균열 보수제 조성물은 기본물성을 저해하지 않는 범위내에서 분산제,소포제,항균제,방부제,동결 방지제중에서 선택된 하나 이상의 첨가제를 더 포함할 수 있다.The crack repair agent composition of the present invention may further include one or more additives selected from dispersants, antifoams, antibacterial agents, antiseptics, antifreezing agents within a range that does not impair the basic properties.
상술한 균열 보수제 조성물을 이용한 균열 보수 공법에 대하여 설명하기로 한다.The crack repair method using the crack repair composition described above will be described.
먼저 건축 토목 구조물 표면으로부터 열화부를 제거한다. 이러한 열화부를 제거하기 위하여 통상적인 표면처리 방법을 이용할 수 있다. First, the deterioration is removed from the surface of the building civil structure. Conventional surface treatment methods can be used to remove such deterioration.
상기 표면처리된 구조물의 표면에 상술한 조성을 갖는 균열 보수제 조성물을 도장 및 건조하여 균열 보수막을 형성한다. A crack repair film is formed by coating and drying the crack repair composition having the above-described composition on the surface of the surface-treated structure.
본 발명의 균열 보수제 조성물은 1액형으로서 작업직전에 다른 첨가제와 혼합하는 과정이 불필요하므로 작업하기가 용이하고, 도장하기가 쉽다. 또한 도장 및 건조 작업을 통하여 구조물 표면상에서 아크릴에멀젼내에 함유된 아크릴계 공중합체간의 가교 반응이 진행되어 치밀한 균열 보수막이 형성된다. The crack repair agent composition of the present invention is a one-part type, so that a process of mixing with other additives immediately before the operation is unnecessary, so that it is easy to work and easy to paint. In addition, the cross-linking reaction between the acrylic copolymer contained in the acrylic emulsion on the surface of the structure through the coating and drying operation is carried out to form a dense crack repair film.
상기한 바와 같은 치밀한 균열 보수막의 형성으로 구조물과 균열 보수막의 접착력은 기존의 아크릴계 에멀젼을 사용한 경우와 비교하여 매우 개선된다. With the formation of the dense crack repair film as described above, the adhesion between the structure and the crack repair film is greatly improved compared with the case of using the conventional acrylic emulsion.
상술한 균열 보수막 형성 과정이후에 양생처리과정을 거칠 수 있다.The curing process may be performed after the above-described crack repair film forming process.
상기 양생 처리 과정은 온도, 하중, 충격 또는 오파손 등의 유해한 영향을 최소화하기 위한 것으로서, 양생 조건은, 15℃ 내지 25℃의 온도 및 50% 내지 70%의 상대 습도 하에서, 1일 내지 2일 동안 수행되는 것이 바람직하다.The curing process is for minimizing harmful effects such as temperature, load, impact or misruption, and curing conditions are 1 to 2 days under a temperature of 15 ° C. to 25 ° C. and a relative humidity of 50% to 70%. Is preferably carried out during the process.
본 발명의 균열 보수 공법은 그 적용 분야가 특별하게 제한되는 것은 아니며, 하수암거, 전력구, 통신구, 공동구, 지하철과 같은 지하구조물, 정수장, 하수종말처리장, 수영장, 저수시설, 수로암거/개거와 같은 수리구조물, 터널, 교량, 보도육교, 지하차도, 옹벽, 건축 구조물과 같은 일반구조물, 댐, 부두시설, 방파제, 해상강관, LNG 탱크/유류탱크, 산업 플랜트 시설과 같은 특수구조물 등에 사용된다.The crack repair method of the present invention is not particularly limited in the field of application, sewage culvert, electric power, communication, joint, underground structure such as subway, water purification plant, sewage treatment plant, swimming pool, water storage facility, channel culvert / reclaim It is used to repair structures such as tunnels, bridges, sidewalks, underground structures, retaining walls, general structures such as building structures, dams, wharf facilities, breakwaters, offshore steel pipes, LNG tanks / oil tanks, and special structures such as industrial plant facilities. .
이하, 실시예에 의하여 본 발명을 보다 구체적으로 설명하지만 본 실시예가 본발명의 범주를 한정하는 것은 아니다. Hereinafter, the present invention will be described in more detail with reference to Examples, but the Examples do not limit the scope of the present invention.
실시예Example 1 One
혼합교반조에 40중량부의 아크릴 에멀젼을 넣고 500rpm의 속도로 교반하면서 0.5중량부의 증점제(셀룰로이스 에스테르), 0.1중량부의 증점보조제인 메틸셀룰로이스 0.05중량부의 pH조절제, 0.5중량부의 가교촉진제(글리콜 아세테이트), 0.3중량부의 가소제(폴리프로필렌 글리콜), 1중량부의 흐름저항성 물질인 메톡시프로필아세테이트를 순서대로 서서히 투입한 후 60중량부의 충진제인 탄산칼슘을 넣고 300rpm의 속도로 상온에서 1시간 교반하여 균열 보수제 조성물을 준비하였다.0.5 parts by weight of thickener (cellulose ester), 0.1 parts by weight of methyl cellulose, 0.05 parts by weight of pH regulator, 0.5 parts by weight of crosslinking accelerator (glycol acetate) while stirring 40 parts by weight of acrylic emulsion in a stirring mixture at 500 rpm. , 0.3 parts by weight of plasticizer (polypropylene glycol), 1 part by weight of methoxypropyl acetate, a flow-resistant material, was gradually added in order, and then 60 parts by weight of calcium carbonate, a filler, was stirred at a speed of 300 rpm for 1 hour to crack repair agent. The composition was prepared.
실시예Example 2 2
혼합교반조에 60중량부의 아크릴에멀젼을 넣고 500rpm의 속도로 교반하면서 0.5중량부의 아크릴 증점제, 0.3중량부의 메틸셀룰로이스 0.05중량부의 pH조절제, 1중량부의 가교촉진제, 0.3중량부의 가소제, 1중량부의 흐름저항성 물질을 순서대로 서서히 투입한 후 50중량부의 충진제를 넣고 300rpm의 속도로 상온에서 1시간 교반하여 균열 보수제 조성물을 준비하였다. 여기에서 증점제, 메틸셀룰로오즈, pH조절제, 가교촉진제, 가소제 및 흐름저항성 물질은 실시예 1과 동일한 것을 사용하였다.60 parts by weight of acrylic emulsion was added to the mixing agitation, and 0.5 parts by weight of acrylic thickener, 0.3 parts by weight of methylcellulose, 0.05 parts by weight of pH regulator, 1 part by weight of crosslinking accelerator, 0.3 part by weight of plasticizer, and 1 part by weight of flow resistance Subsequently, the materials were slowly added in order, and then 50 parts by weight of filler was added thereto, followed by stirring at room temperature for 1 hour at 300 rpm to prepare a crack repair composition. Here, the same thickener, methylcellulose, pH regulator, crosslinking accelerator, plasticizer and flow resistant material were used as in Example 1.
실시예Example 3 3
혼합교반조에 60중량부의 아크릴에멀젼을 넣고 500rpm의 속도로 교반하면서 1중량부의 아크릴 증점제, 0.1중량부의 메틸셀룰로이스 0.05중량부의 pH조절제, 0.5중량부의 가교촉진제, 0.2중량부의 가소제, 1중량부의 흐름저항성 Agent을 순서대로 서서히 투입한 후 70중량부의 충진제를 넣고 300rpm의 속도로 상온에서 1시간 교반하여 균열 보수제 조성물을 준비하였다. 여기에서 증점제, 메틸셀룰로오즈, pH조절제, 가교촉진제, 가소제 및 흐름저항성 물질은 실시예 1과 동일한 것을 사용하 였다.60 parts by weight of acrylic emulsion was added to the mixing agitation, while stirring at a speed of 500 rpm, 1 part by weight of acrylic thickener, 0.1 part by weight of methyl cellulose, 0.05 part by weight of pH regulator, 0.5 part by weight of crosslinking accelerator, 0.2 part by weight of plasticizer, and 1 part by weight of flow resistance. After slowly adding the agent in order to 70 parts by weight of the filler was added to prepare a crack repair composition by stirring at room temperature for 1 hour at a speed of 300rpm. Here, the same thickener, methyl cellulose, pH regulator, crosslinking accelerator, plasticizer and flow resistant material were used as in Example 1.
평가예Evaluation example 1 One
건축 토목 구조물의 열화부를 제거한 다음, 이 표면상부에 상기 실시예 1~3의 균열 보수제 조성물을 각각 도장 및 건조하여 균열 보수막을 형성하였다. 이와 같이 얻어진 균열 보수막의 접착강도, 내균열 안정성 및 미끄럼저항성 및 균열 보수제 조성물의 저장안정성을 KS규격, KSL 1593상의 시험방법에 의거하여 물성을 평가하고 그 결과를 하기 표 1에 기재하였다. 하기 표 1에서 제품 A는 국내에서 시판되고 있는 K사의 건축 토목 구조물의 균열 보수제 제품을 나타내며, 이를 실시예 1~3의 균열 보수제 조성물과 비교 대상으로 평가하였다.After the deterioration part of the civil engineering structure was removed, the crack repair agent compositions of Examples 1 to 3 were respectively coated and dried on the surface thereof to form a crack repair film. The adhesive strength, crack resistance and slip resistance of the crack repair film thus obtained and the storage stability of the crack repair agent composition were evaluated based on the test method of the KS standard and KSL 1593, and the results are shown in Table 1 below. In Table 1, product A represents a crack repair product of K civil engineering structures, which are commercially available in Korea, and were evaluated by comparison with the crack repair composition of Examples 1 to 3.
[표 1] TABLE 1
상기 표1에서 알 수 있듯이, 실시예 1~3에 의한 균열 보수제 조성물은 제품A의 경우와 비교하여 내균열저항성, 내수성, 내알카리성이 개선되고, 미끄럼 저항성은 거의 동등한 수준을 나타냈다.As can be seen from Table 1, the crack repair agent composition according to Examples 1 to 3 has improved crack resistance, water resistance, alkali resistance, and slip resistance almost the same level as compared to the case of product A.
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| KR101744500B1 (en) * | 2016-11-16 | 2017-06-09 | (주)피엠씨 | Composition of high elastic putty for crack repair containing inorganic filler surface modified with silane coupling agent and construction method thereof |
| KR101791653B1 (en) | 2015-08-04 | 2017-10-31 | 주식회사 제이에스기술 | Epoxy Primer for Preventing Pin Hole |
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| JPH0450158A (en) * | 1990-06-20 | 1992-02-19 | Yoshida Kogyo Kk <Ykk> | Ceramic material for extrusion molding |
| KR20060097293A (en) * | 2005-03-05 | 2006-09-14 | 우신건축환경클리닉(주) | Method for repairing the concrete |
| KR100623423B1 (en) | 2005-05-16 | 2006-09-15 | 주식회사 부일건화 | A composite of polymer cement mortar with anti-water property and durability as a concrete surface finishing material |
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| JPH02292312A (en) * | 1989-05-01 | 1990-12-03 | Mitsubishi Rayon Co Ltd | Composition for resin concrete |
| JPH0450158A (en) * | 1990-06-20 | 1992-02-19 | Yoshida Kogyo Kk <Ykk> | Ceramic material for extrusion molding |
| KR20060097293A (en) * | 2005-03-05 | 2006-09-14 | 우신건축환경클리닉(주) | Method for repairing the concrete |
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| KR101791653B1 (en) | 2015-08-04 | 2017-10-31 | 주식회사 제이에스기술 | Epoxy Primer for Preventing Pin Hole |
| KR101744500B1 (en) * | 2016-11-16 | 2017-06-09 | (주)피엠씨 | Composition of high elastic putty for crack repair containing inorganic filler surface modified with silane coupling agent and construction method thereof |
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