KR102158508B1 - Polymer Cement Mortar Composition for repair and reinforcement of concrete structure section using graphene and repair and reinforcement method of concrete structure using same - Google Patents

Polymer Cement Mortar Composition for repair and reinforcement of concrete structure section using graphene and repair and reinforcement method of concrete structure using same Download PDF

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Publication number
KR102158508B1
KR102158508B1 KR1020200010815A KR20200010815A KR102158508B1 KR 102158508 B1 KR102158508 B1 KR 102158508B1 KR 1020200010815 A KR1020200010815 A KR 1020200010815A KR 20200010815 A KR20200010815 A KR 20200010815A KR 102158508 B1 KR102158508 B1 KR 102158508B1
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South Korea
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weight
concrete
resistance
reinforcement
repair
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KR1020200010815A
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Korean (ko)
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김형진
홍국운
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세기하이테크건설 주식회사
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    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/72Repairing or restoring existing buildings or building materials
    • C04B2111/723Repairing reinforced concrete
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F3/00Sewer pipe-line systems
    • E03F3/06Methods of, or installations for, laying sewer pipes
    • E03F2003/065Refurbishing of sewer pipes, e.g. by coating, lining

Abstract

The present invention relates to a composition for repairing and reinforcing the cross section of a concrete structure containing 5 to 70 wt% of a functional binder, 5 to 90 wt% of fine aggregate, 0.1 to 10 wt% of a graphene dispersion and 0.1 to 25 wt% of water, and to a repair and reinforcement method of the concrete structure using the same. The functional binder contains, based on a total 100 wt% of the functional binder: 15 to 90 wt% of crude steel Portland cement; 5 to 50 wt% of calcium or magnesium sulfoaluminate; 1 to 40 wt% of calcium chloroaluminate; 1 to 30 wt% of hollow silica; 0.1 to 20 wt% of diatomite; 0.1 to 15 wt% of plaster; 0.1 to 15 wt% of a lithium silicate-potassium silicate mixture; 0.1 to 10 wt% of bentonite; 0.1 to 10 wt% of emery powder; 0.1 to 10 wt% of an ethylene-vinyl acetate-vinyl chloride copolymer; 0.1 to 10 wt% of a methyl methacrylate-styrene butadiene copolymer; to 10 wt% of an acrylonitrile-butadiene-polyvinyl chloride copolymer; and 0.1 to 10 wt% of cellulose acetate. When the concrete structure is repaired by using the composition of the present invention, the flexural toughness, abrasion resistance, salt damage resistance, neutralization resistance, freezing and thawing resistance, and surface hardness of the concrete structure can be improved by using a graphene dispersion and a functional binder, thereby being able to significantly reduce the maintenance cost of the concrete structure.

Description

그래핀을 이용한 콘크리트 구조물 단면 보수·보강용 폴리머 시멘트 모르타르 조성물 및 이를 이용한 콘크리트 구조물 보수·보강 공법{Polymer Cement Mortar Composition for repair and reinforcement of concrete structure section using graphene and repair and reinforcement method of concrete structure using same}Polymer Cement Mortar Composition for repair and reinforcement of concrete structure section using graphene and repair and reinforcement method of concrete structure using same}

본 발명은 그래핀을 이용한 콘크리트 구조물 단면 보수·보강용 폴리머 시멘트 모르타르 조성물 및 이를 이용한 콘크리트 구조물 보수·보강 공법에 관한 것으로, 더욱 상세하게는 고분말도를 가지는 그래핀을 이용하여 강도 및 내구성이 우수하고, 휨인성, 내산성, 내알칼리성, 염화물 침투 저항성, 중성화 저항성, 동결융해 저항성 및 내수성을 개선할 수 있어 교량 구조물, 도로시설 구조물, 지하구조물 (하수관거, 하수암거, 하수박스), 지수구조물 (수로, 수로교, 도수터널) 등의 화학적 침식으로 인한 콘크리트 부식을 방지할 수 있으며, 콘크리트 구조물의 유지관리 비용을 현저히 절감할 수 있는 그래핀을 이용한 콘크리트 구조물 단면 보수·보강용 폴리머 시멘트 모르타르 조성물 및 이를 이용한 콘크리트 구조물 보수·보강 공법에 관한 것이다.The present invention relates to a polymer cement mortar composition for repairing and reinforcing the cross section of a concrete structure using graphene, and a concrete structure repair and reinforcement method using the same, and more particularly, excellent strength and durability by using graphene having a high powder degree, and , Flexural toughness, acid resistance, alkali resistance, chloride penetration resistance, neutralization resistance, freezing and thawing resistance, and water resistance can be improved, so that bridge structures, road facilities structures, underground structures (sewage pipes, sewage culverts, sewage boxes), waterborne structures (waterways, Polymer cement mortar composition for repairing and reinforcing the cross section of concrete structures using graphene, which can prevent corrosion of concrete due to chemical erosion such as waterway bridges, waterway tunnels, etc., and significantly reduce the maintenance cost of concrete structures, and concrete using the same It relates to the structure repair and reinforcement method.

사회 간접 자본 시설의 대부분을 차지하고 있는 철근 콘크리트 구조물은 콘크리트의 높은 압축강도와 철근의 인장 강도를 복합시킨 경제성이 우수하고 콘크리트의 높은 알칼리성으로 인하여 철근의 방청에 유효한 역할을 담당하는 내구적이며 내진측면에서 매우 우수한 구조재료로서 전 세계적으로 건축 및 토목구조물 등에 광범위하게 사용되고 있다.Reinforced concrete structures, which occupy most of the infrastructure of social indirect capital, are durable and seismic that plays an effective role in rust prevention of reinforcing bars due to the combination of high compressive strength of concrete and tensile strength of reinforcing bars, and the high alkalinity of concrete. As a very excellent structural material in the world, it is widely used in construction and civil engineering structures.

그러나 염해, 중성화 등의 성능저하요인에 의해 건축 및 토목구조물 등 콘크리트구조물의 철근부식, 균열발생 및 구조내력 저하 등 성능저하현상이 심각한 문제점으로 대두됨에 따라 내용연수가 극도로 저하되어 구조물의 안정성 및 거주성이 약화되고 불량해질 뿐만 아니라 도시환경파괴의 주역이 되고 있으며, 염해 및 중성화에 의한 콘크리트구조물의 내구성 저하 현황이 국내 주요일간지를 통해 심각한 사회적인 이슈로 대두되고 있어 성능 저하된 콘크리트구조물의 장수명화 및 내구성 회복이 국가·사회적으로 시급히 해결해야 할 과제로 대두되고 있다. However, due to the deterioration of performance such as salt damage and neutralization, rebar corrosion of concrete structures such as construction and civil engineering structures, cracks, and deterioration of structural strength are serious problems. Not only is the habitability weakened and deteriorated, but it is also a leading player in the destruction of the urban environment, and the current status of the decrease in durability of concrete structures due to salt damage and neutralization has emerged as a serious social issue through major domestic daily newspapers. And durability recovery is emerging as an urgent task to be resolved nationally and socially.

한편, 일반적인 환경에서 화학적 부식 문제가 생기는 것은 확률적으로 매우 적으며, 생활하수 등에 포함된 유기물이 세균에 의해 반응을 일으켜 황산이온을 생성함으로써 콘크리트를 침식하거나, 온천 지대 또는 산성비 등에 의한 산성 물질에 의해 콘크리트가 침식되는 경우나, 하수종말처리에 관련된 철근 콘크리트 구조물의 아황산염에 의해 콘크리트 구조물이 부식되는 경우가 대부분이다. On the other hand, it is very unlikely that a chemical corrosion problem occurs in a general environment, and organic matter contained in household sewage reacts by bacteria to generate sulfate ions, thereby eroding concrete, or to acidic substances such as hot springs or acid rain. In most cases, concrete is eroded by the erosion of concrete or by the sulfite of reinforced concrete structures related to sewage treatment.

또한, 콘크리트 구조물은 물이나 습기로 인하여 구조물이 중성화되어 보강재로 쓰인 철근, 철사, 강선 등의 금속류가 부식하고 밀폐공간의 내부 습기로 독가스 등으로 인하여 콘크리트의 중성화가 촉진되어 구조물의 사용 연한이 짧아지는 등의 문제점이 있다.In addition, since the structure of concrete structures is neutralized due to water or moisture, metals such as reinforcing steel, wire, and steel wire are corroded, and the use of the structure is shortened due to the promotion of neutralization of the concrete due to poison gas due to the moisture inside the closed space. There are problems such as losing.

특허등록번호 10-1964367 (2019.04.02.)Patent registration number 10-1964367 (2019.04.02.) 특허등록번호 10-1825152 (2018.02.02.)Patent registration number 10-1825152 (2018.02.02.) 특허등록번호 10-1654199 (2016.09.05.)Patent registration number 10-1654199 (2016.09.05.)

본 발명이 해결하고자 하는 과제는 그래핀을 사용하여 강도 및 내구성이 우수하고, 휨인성, 내산성, 내알칼리성, 염화물 침투 저항성, 중성화 저항성, 동결융해 저항성 및 내수성을 개선할 수 있으며, 화학적 침식으로 인한 콘크리트 부식을 방지할 수 있으며, 콘크리트 구조물의 유지관리 비용을 현저히 절감할 수 있는 그래핀을 이용한 콘크리트 구조물 단면 보수·보강용 조성물 및 이를 이용한 콘크리트 구조물 보수·보강 공법을 제공함에 있다.The problem to be solved by the present invention is excellent in strength and durability using graphene, and can improve flexural toughness, acid resistance, alkali resistance, chloride penetration resistance, neutralization resistance, freeze-thaw resistance and water resistance, and It is intended to provide a composition for repairing and reinforcing a concrete structure section using graphene, which can prevent concrete corrosion and significantly reduce the maintenance cost of concrete structures, and a concrete structure repair and reinforcement method using the same.

본 발명은, 기능성 결합재 5∼70중량%, 잔골재 5∼90중량%, 그래핀 분산액 0.1~10중량% 및 물 0.1∼25중량%를 포함하고, 상기 기능성 결합재는, 기능성 결합재 중량 대비, 조강 포틀랜드 시멘트 15∼90중량%, 칼슘 또는 마그네슘설포알루미네이트 5∼50중량%, 칼슘클로로알루미네이트 1∼40중량%, 중공형 실리카 1∼30중량%, 규조토 0.1∼20중량%, 석고 0.1∼15중량%, 리튬실리케이트-포타슘실리케이트 혼합물 0.1∼15중량%, 벤토나이트 0.1∼10중량%, 에머리 분말 0.1∼10중량, 에틸렌-초산비닐-염화비닐 공중합체 0.1∼10중량%, 메틸메타아크릴레이트-스티렌 부타디엔 공중합체 0.1∼10중량%, 아크릴로니트릴-부타디엔-폴리염화비닐 공중합체 0.1∼10중량% 및 셀룰로오스 아세테이트 0.1∼10중량%를 포함하는 것을 특징으로 하는 콘크리트 구조물 단면 보수·보강용 조성물을 제공한다.The present invention comprises a functional binder 5 to 70% by weight, fine aggregate 5 to 90% by weight, graphene dispersion 0.1 to 10% by weight and water 0.1 to 25% by weight, and the functional binder is, based on the weight of the functional binder, crude steel Portland Cement 15 to 90% by weight, calcium or magnesium sulfoaluminate 5 to 50% by weight, calcium chloro aluminate 1 to 40% by weight, hollow silica 1 to 30% by weight, diatomaceous earth 0.1 to 20% by weight, gypsum 0.1 to 15% %, lithium silicate-potassium silicate mixture 0.1 to 15% by weight, bentonite 0.1 to 10% by weight, emery powder 0.1 to 10% by weight, ethylene-vinyl acetate-vinyl chloride copolymer 0.1 to 10% by weight, methyl methacrylate-styrene butadiene It provides a composition for repairing and reinforcing a section of a concrete structure, comprising 0.1 to 10% by weight of a copolymer, 0.1 to 10% by weight of an acrylonitrile-butadiene-polyvinyl chloride copolymer, and 0.1 to 10% by weight of cellulose acetate. .

상기 기능성 결합재는, 감수제, 경화지연제, 소포제, 규불화마그네슘, 티타늄옥사이드, 3-아크릴옥시프로필메틸비스(트리메톡시)실란, 폴리아크릴산알킬, 테트라플루오로에틸렌-트리플루오로니트로소메탄 공중합체 또는 알긴산프로필렌글리콜을 기능성 결합재 중량 대비 0.01∼10 중량% 더 포함할 수 있다. The functional binder is a water reducing agent, a curing retardant, an antifoaming agent, magnesium silicide, titanium oxide, 3-acryloxypropylmethylbis(trimethoxy)silane, alkyl polyacrylate, tetrafluoroethylene-trifluoronitrosomethane copolymer It may further contain 0.01 to 10% by weight of the polymer or propylene glycol alginate based on the weight of the functional binder.

또한, 상기 기능성 결합재는, 휨 및 인장강도 개선, 초기소성균열, 파괴인성을 개선하기 위하여 친수성 섬유로서 폴리프로필렌섬유, 폴리에스터섬유, 나일론 섬유 및 매크로 섬유 중에서 선택된 1종 이상을 기능성 결합재 중량 대비 0.01∼5 중량% 더 포함할 수 있다. In addition, the functional binder is 0.01 or more selected from polypropylene fiber, polyester fiber, nylon fiber and macro fiber as a hydrophilic fiber to improve flexural and tensile strength, initial plastic cracking, and fracture toughness. It may further contain -5% by weight.

상기 그래핀 분산액은 산 용액에 그래핀 분말을 분산시키고 알칼리 용액으로 pH를 8로 조절한 것으로서, 용액 내 분산된 그래핀의 농도는 0.001∼30중량%의 범위이다.The graphene dispersion is obtained by dispersing graphene powder in an acid solution and adjusting the pH to 8 with an alkaline solution, and the concentration of the graphene dispersed in the solution is in the range of 0.001 to 30% by weight.

상기 잔골재는 실리카질 규사 60∼99중량% 및 뮬나이트 1∼40중량%를 포함할 수 있다. The fine aggregate may include 60 to 99% by weight of siliceous silica and 1 to 40% by weight of mullite.

본 발명은 또한 콘크리트 구조물의 보수·보강 공법을 제공하며, 이는 콘크리트의 레이탄스, 불순물, 열화부위 등을 그라인더, 평삭기, 숏블라스터 또는 핸드 워터젯으로 치핑하여 제거하고 흡입장치 등을 이용하여 청소하는 단계; 청소된 부위의 수분함수율을 확인한 후에 구체 콘크리트와 상기 콘크리트 구조물 단면 보수·보강용 조성물의 부착성을 개선하고, 유해물질, 물 등의 침투를 방지하기 위한 프라이머 또는 블루밍 처리하는 단계; 상기 프라이머 또는 블루밍 처리된 상부에 상기 콘크리트 구조물 단면 보수·보강용 조성물을 타설한 후 표면 마무리하는 단계; 내마모성, 내오염성, 중성화 저항성, 내염해성, 동결융해 저항성, 자외선 저항성 등의 표층강화 및 내구성을 개선하기 위하여 표면 보호·강화제로 표면을 마감하는 단계; 및 양생하는 단계를 포함한다.The present invention also provides a method for repairing and reinforcing concrete structures, which is used to remove latance, impurities, and deteriorated areas of concrete by chipping with a grinder, planing machine, shot blaster or hand water jet, and cleaning using a suction device. step; After checking the moisture content of the cleaned area, performing a primer or blooming treatment to improve the adhesion between the concrete concrete and the composition for repairing and reinforcing the cross section of the concrete structure, and to prevent penetration of harmful substances and water; Pouring the composition for repairing and reinforcing the cross-section of the concrete structure on the primer or blooming-treated upper portion and then finishing the surface; Finishing the surface with a surface protection/reinforcement agent to reinforce the surface layer and improve durability such as abrasion resistance, stain resistance, neutralization resistance, salt decomposition resistance, freeze-thaw resistance, and UV resistance; And curing.

상기 프라이머는 스티렌-부타디엔, 폴리초산비닐, 폴리 아크릴 에스테르 및 아크릴계 에멀젼 중에서 선택된 1종 이상이다. The primer is at least one selected from styrene-butadiene, polyvinyl acetate, polyacrylic ester, and acrylic emulsion.

상기 표면 보호·강화제는 황산바륨 1∼30중량%, 이산화규소 1∼20중량%, 탄화붕소 1∼20중량%, 티타늄옥사이드 1∼20중량%, 메틸아크릴레이트-부틸아크릴레이트-스티렌 공중합체 1∼30중량%, 폴리에스테르폴리올 1~20중량%, 비스페놀A-에피클로로하이드린 중합체 1~15중량% 및 프로필에틸트리메톡시실란 0.1∼10중량%를 포함한다. The surface protection/strengthening agent is 1 to 30% by weight of barium sulfate, 1 to 20% by weight of silicon dioxide, 1 to 20% by weight of boron carbide, 1 to 20% by weight of titanium oxide, methyl acrylate-butyl acrylate-styrene copolymer 1 To 30% by weight, 1 to 20% by weight of polyester polyol, 1 to 15% by weight of bisphenol A-epichlorohydrin polymer, and 0.1 to 10% by weight of propylethyltrimethoxysilane.

본 발명의 콘크리트 구조물 단면 보수·보강용 조성물에 의하면, 그래핀 분산액 및 기능성 결합재를 사용함으로써 휨인성, 내마모성, 내염해성, 중성화 저항성, 동결융해 저항성 및 표면경도를 개선할 수 있다. 또한, 현장에서 물만 주입하여 사용할 수 있어 현장시공성이 개선되고, 조기강도를 발현할 수 있어 시공기간을 단축하여 교통개방 시간을 줄일 수 있으며, 콘크리트 구조물의 공용 기간을 연장시킬 수 있을 뿐만 아니라 유지보수에 소요되는 비용을 절감할 수 있다.According to the composition for repairing and reinforcing the cross section of a concrete structure of the present invention, flexural toughness, abrasion resistance, salt decomposition resistance, neutralization resistance, freeze-thaw resistance and surface hardness can be improved by using a graphene dispersion and a functional binder. In addition, since only water can be injected and used at the site, site constructability is improved, and early strength can be expressed, so the construction period can be shortened to reduce the traffic opening time, and the common period of concrete structures can be extended as well as maintenance. You can reduce the cost of

이하, 본 발명에 따른 바람직한 실시예를 상세하게 설명한다. 그러나 이하의 실시예는 이 기술분야에서 통상적인 지식을 가진 자에게 본 발명이 충분히 이해되도록 제공되는 것으로서 여러 가지 다른 형태로 변형될 수 있으며, 본 발명의 범위가 다음에 기술되는 실시예에 한정되는 것은 아니다. Hereinafter, a preferred embodiment according to the present invention will be described in detail. However, the following examples are provided so that the present invention may be sufficiently understood by those of ordinary skill in the art, and may be modified in various other forms, and the scope of the present invention is limited to the examples described below. It is not.

본 발명의 바람직한 실시예에 따른 콘크리트 구조물 단면 보수·보강용 조성물은 기능성 결합재 5∼70중량%, 잔골재 5∼90중량%, 그래핀 분산액 0.1~10중량% 및 물 0.1∼25중량%를 포함한다.The composition for repairing and reinforcing the cross-section of a concrete structure according to a preferred embodiment of the present invention comprises 5 to 70% by weight of a functional binder, 5 to 90% by weight of fine aggregate, 0.1 to 10% by weight of graphene dispersion, and 0.1 to 25% by weight of water. .

상기 기능성 결합재는 초기 강도를 발현하며, 내구성을 증진하고, 온도 상승을 억제하며, 내마모성을 개선하는 등의 효과를 갖게 하기 위하여 사용하며, 상기 콘크리트 구조물 단면 보수·보강용 조성물에 대하여 5∼70중량% 함유되는 것이 바람직하며, 상기 기능성 결합재의 함량이 70중량%를 초과하면 강도 및 내구성은 개선되나 수축팽창효과에 의하여 균열이 발생하기 쉽고, 그 함량이 5중량% 미만이면 작업성 및 균열발생은 저하되나 강도 및 내구성 개선효과가 미약할 수 있다.The functional binder is used to have effects such as expressing initial strength, enhancing durability, suppressing temperature rise, and improving abrasion resistance, and is 5 to 70 weight based on the composition for repairing and reinforcing the cross section of the concrete structure. %, and if the content of the functional binder exceeds 70% by weight, strength and durability are improved, but cracks are likely to occur due to the shrinkage and expansion effect, and if the content is less than 5% by weight, workability and cracking occur It may decrease, but the effect of improving strength and durability may be weak.

상기 기능성 결합재는 조강 포틀랜드 시멘트 15∼90중량%, 칼슘 또는 마그네슘설포알루미네이트 5∼50중량%, 칼슘클로로알루미네이트 1∼40중량%, 중공형 실리카 1∼30중량%, 규조토 0.1∼20중량%, 석고 0.1∼15중량%, 리튬실리케이트-포타슘실리케이트 혼합물 0.1∼15중량%, 벤토나이트 0.1∼10중량%, 에머리 분말 0.1∼10중량, 에틸렌-초산비닐-염화비닐 공중합체 0.1∼10중량%, 메틸메타아크릴레이트-스티렌 부타디엔 공중합체 0.1∼10중량%, 아크릴로니트릴-부타디엔-폴리염화비닐 공중합체 0.1∼10중량% 및 셀룰로오스 아세테이트 0.1∼10중량%를 포함한다.The functional binder is crude steel Portland cement 15 to 90% by weight, calcium or magnesium sulfoaluminate 5 to 50% by weight, calcium chloro aluminate 1 to 40% by weight, hollow silica 1 to 30% by weight, diatomaceous earth 0.1 to 20% by weight , Gypsum 0.1-15% by weight, lithium silicate-potassium silicate mixture 0.1-15% by weight, bentonite 0.1-10% by weight, emery powder 0.1-10% by weight, ethylene-vinyl acetate-vinyl chloride copolymer 0.1-10% by weight, methyl 0.1-10% by weight of a methacrylate-styrene butadiene copolymer, 0.1-10% by weight of an acrylonitrile-butadiene-polyvinyl chloride copolymer, and 0.1-10% by weight of a cellulose acetate are included.

상기 조강 포틀랜드 시멘트는 KS에 규정된 것을 사용하는 것이 바람직하며, 일반 시중에 유통되는 시멘트를 사용할 수 있다. 상기 조강 포틀랜드 시멘트는 상기 기능성 결합재에 대하여 15∼90중량% 함유되는 것이 바람직하다. 상기 조강 포틀랜드 시멘트의 함량이 90중량%를 초과하면 경화속도가 빨라져 작업성이 저하되고, 그 함량이 15중량% 미만이면 초기 강도 발현성이 저하된다.It is preferable to use the crude steel Portland cement specified in KS, and cement distributed in the general market may be used. It is preferable that the crude steel Portland cement is contained in an amount of 15 to 90% by weight based on the functional binder. When the content of the crude steel Portland cement exceeds 90% by weight, the curing rate is accelerated to reduce workability, and when the content is less than 15% by weight, the initial strength development property decreases.

상기 칼슘 또는 마그네슘설포알루미네이트는 초기강도 발현 및 건조수축을 저감하기 위하여 사용한다. 상기 칼슘 또는 마그네슘설포알루미네이트는 상기 기능성 결합재에 대하여 5∼50중량% 함유되는 것이 바람직하다. 상기 칼슘 또는 마그네슘설포알루미네이트의 함량이 50중량%를 초과하면 초기강도 발현 및 수축저감 효과는 개선되나 작업성이 떨어질 수 있고, 그 함량이 5중량% 미만이면 작업성은 좋으나 초기강도 발현 및 수축저감 효과가 미약할 수 있다. The calcium or magnesium sulfoaluminate is used to develop initial strength and reduce drying shrinkage. The calcium or magnesium sulfoaluminate is preferably contained in an amount of 5 to 50% by weight based on the functional binder. If the content of calcium or magnesium sulfoaluminate exceeds 50% by weight, the initial strength and shrinkage reduction effect are improved, but workability may be deteriorated.If the content is less than 5% by weight, workability is good, but initial strength is expressed and shrinkage is reduced. The effect may be weak.

상기 칼슘클로로알루미네이트는 수화반응성을 증가시키고 균열 억제를 위해 첨가하는 무기계 속경성 광물 재료로서, 물과 접촉할 때 순식간에 물과 반응하여 에트린자이트(Ettringite) 수화물을 생성함으로써, 시멘트와 혼합할 때 단시간 내에 우수한 압축 강도를 얻을 수 있게 한다. 상기 칼슘클로로알루미네이트는 상기 기능성 결합재에 대하여 대하여 1∼40중량% 함유되는 것이 바람직하다. 상기 칼슘클로로알루미네이트의 중량비가 증가하면 빠른 경화특성을 나타내며, 상기 칼슘클로로알루미네이트의 함량이 1중량% 미만일 경우 강도 개선 효과 및 균열 발생 억제 효과가 미약할 수 있고, 그 함량이 40중량%를 초과할 경우에는 빠른 경화 특성으로 인해 좋은 물성을 얻을 수 있으나 제조 원가가 높아져 경제적이지 못하다. The calcium chloroaluminate is an inorganic fast-setting mineral material added to increase hydration reactivity and inhibit cracking, and when it comes into contact with water, it reacts with water in an instant to produce ethringite hydrate, thereby mixing it with cement. When doing so, it makes it possible to obtain excellent compressive strength within a short time. The calcium chloro aluminate is preferably contained in an amount of 1 to 40% by weight based on the functional binder. When the weight ratio of the calcium chloro aluminate increases, it shows a fast curing property, and when the content of the calcium chloro aluminate is less than 1% by weight, the strength improvement effect and the cracking suppression effect may be weak, and the content is 40% by weight. If it is exceeded, good physical properties can be obtained due to fast hardening properties, but manufacturing costs are high, which is not economical.

상기 중공형 실리카는 장기 강도 발현 및 내구성 증진을 위하여 사용한다. 상기 중공형 실리카의 중량비가 증가하면 조기 강도는 저하되나, 장기 강도 발현 및 내구성이 증가한다. 상기 중공형 실리카는 상기 기능성 결합재에 대하여 1∼30중량% 함유되는 것이 바람직하다. 상기 중공형 실리카의 함량이 30중량%를 초과하면 초기 강도발현을 저하시키고, 그 함량이 1중량% 미만이면 장기 강도 발현 및 내구성 개선효과가 미약할 수 있다.The hollow silica is used to develop long-term strength and improve durability. As the weight ratio of the hollow silica increases, the early strength decreases, but long-term strength and durability increase. It is preferable that the hollow silica is contained in an amount of 1 to 30% by weight based on the functional binder. When the content of the hollow silica exceeds 30% by weight, initial strength expression is reduced, and when the content is less than 1% by weight, long-term strength expression and durability improvement effect may be weak.

상기 규조토는 천연 포졸란 특성, 장기 강도 발현 및 내구성 증진을 위하여 사용한다. 상기 규조토의 중량비가 증가하면 조기 강도는 저하되나, 장기 강도 발현 및 내구성이 증가한다. 상기 규조토는 상기 기능성 결합재에 대하여 0.1∼20중량% 함유되는 것이 바람직하다. 상기 규조토의 함량이 20중량%를 초과하면 초기 강도발현을 저하시키고, 그 함량이 0.1중량% 미만이면 장기 강도 발현 및 내구성 개선효과가 미약할 수 있다.The diatomaceous earth is used to develop natural pozzolan properties, long-term strength and durability. As the weight ratio of the diatomaceous earth increases, the early strength decreases, but long-term strength and durability increase. The diatomaceous earth is preferably contained in an amount of 0.1 to 20% by weight based on the functional binder. When the content of the diatomaceous earth exceeds 20% by weight, the initial strength expression is lowered, and when the content is less than 0.1% by weight, the long-term strength expression and durability improvement effect may be weak.

상기 석고(CaSO4)는 시멘트 중의 성분, 특히 C3A(3CaOㆍAl2O3)와 반응하여 초기에 에트린자이트(AFt상, C3A3ㆍCaSO4ㆍ32H2O)를 생성하게 되는데, 생성된 에트린자이트는 수화가 진행됨에 따라 그 양이 감소하거나 또는 그 일부가 모노 설페이트(AFm상, C3AㆍCaSO4ㆍ12H2O)로 전이된다. 본 발명에서와 같이 다량의 석고가 첨가될 경우 에트린자이트가 초기부터 충분히 생성되어 시멘트의 구조를 치밀화시킴으로써 초기 재령에서 염화물 이온에 대한 침투저항성을 증가시키게 된다. 또한 일반 시멘트의 경우 생성된 에트린자이트가 초기에만 주로 존재하게 되지만 본 발명의 조성물의 경우 석고량이 충분히 첨가되기 때문에 장기 재령에 있어서도 에트린자이트가 일정 부분 존재하게 되거나 또는 일부의 에트린자이트가 연속적으로 생성되기도 한다. 이와 같이 생성된 에트린자이트는 콘크리트 구조체 내의 공극을 치밀하게 채워줌으로써 장기 재령에 있어서도 염화물에 대한 침투 저항성을 증가시키게 된다. The gypsum (CaSO 4 ) reacts with a component in the cement, especially C 3 A (3CaO·Al 2 O 3 ), to initially generate ethrinzite (AFt phase, C 3 A3·CaSO 32H 2 O). However, the amount of the produced ethrinzite decreases as the hydration progresses, or a part thereof is transferred to monosulfate (AFm phase, C 3 A·CaSO 12H 2 O). As in the present invention, when a large amount of gypsum is added, ethrinzite is sufficiently generated from the beginning to densify the structure of the cement, thereby increasing the penetration resistance to chloride ions in the early age. In addition, in the case of general cement, the generated ethrinzite is mainly present only at the beginning, but in the case of the composition of the present invention, since a sufficient amount of gypsum is added, a certain portion of ethrinzite may exist or part of the ethrinzite It may be generated continuously. The ethrinzite produced in this way densely fills the voids in the concrete structure, thereby increasing the penetration resistance to chloride even in long-term age.

상기 석고는 상기 기능성 결합재에 대하여 0.1∼15중량% 함유되는 것이 바람직하다. 상기 석고의 중량비가 증가하면 빠른 경화특성을 나타내며, 상기 석고의 함량이 0.1중량% 미만일 경우 강도 및 작업성이 떨어질 수 있고, 그 함량이 15중량%를 초과할 경우에는 빠른 경화 특성으로 인해 좋은 물성을 얻을 수 있으나 제조 원가가 높아져 경제적이지 못하다. It is preferable that the gypsum is contained in an amount of 0.1 to 15% by weight based on the functional binder. When the weight ratio of the gypsum increases, it exhibits rapid hardening properties, and when the gypsum content is less than 0.1% by weight, strength and workability may decrease, and when the content exceeds 15% by weight, good physical properties due to fast curing properties Can be obtained, but it is not economical due to the high manufacturing cost.

상기 리튬실리케이트-포타슘실리케이트 혼합물은 강도, 내식성, 내수성 및 균열저항성을 개선할 수 있다. 상기 리튬실리케이트-포타슘실리케이트 혼합물은 상기 기능성 충전재에 대하여 0.1 내지 15 중량%로 함유되는 것이 바람직하다. 상기 리튬실리케이트-포타슘실리케이트 혼합물의 함량이 상기한 함량 범위보다 너무 많으면 제조 원가가 높아져 경제적이지 못하고 성능개선 효과는 미미할 수 있고, 상기한 함량 범위보다 너무 적으면 성능개선 효과가 미흡하게 된다. 이 때, 상기 리튬실리케이트-포타슘실리케이트 혼합물은 리튬실리케이트 및 포타슘실리케이트를 2:1의 중량비율로 혼합한 것을 사용함으로써, 상기한 효과를 더욱 개선할 수 있다.The lithium silicate-potassium silicate mixture may improve strength, corrosion resistance, water resistance, and crack resistance. The lithium silicate-potassium silicate mixture is preferably contained in an amount of 0.1 to 15% by weight based on the functional filler. If the content of the lithium silicate-potassium silicate mixture is too much than the above-described content range, the manufacturing cost is high, which is not economical, and the performance improvement effect may be insignificant, and if it is too small than the above-described content range, the performance improvement effect is insufficient. In this case, the lithium silicate-potassium silicate mixture may be further improved by using a mixture of lithium silicate and potassium silicate in a weight ratio of 2:1.

상기 벤토나이트는 흡착성능을 가지고 있어 재료분리 방지, 내수성, 내구성 및 점도를 조절하기 위해 사용한다. 상기 벤토나이트는 상기 기능성 결합재에 0.1∼10중량% 함유되는 것이 바람직하다. 상기 벤토나이트의 함량이 0.1중량% 미만이면 성능 개선효과가 미흡하게 되고, 그 함량이 10중량%를 초과하면 재료분리 현상은 발생하지 않으나 점성이 높아져 작업성이 저하될 수 있다. Bentonite has adsorption performance and is used to prevent material separation, water resistance, durability, and viscosity. The bentonite is preferably contained in an amount of 0.1 to 10% by weight in the functional binder. If the content of bentonite is less than 0.1% by weight, the performance improvement effect is insufficient, and if the content is more than 10% by weight, material separation does not occur, but the viscosity increases, so workability may decrease.

상기 에머리 분말은 장기 강도, 내구성, 내화성을 개선하기 위하여 사용한다. 상기 에머리 분말은 상기 기능성 결합재에 대하여 0.1∼10중량% 함유되는 것이 바람직하다. 상기 에머리 분말의 중량비가 증가하면 빠른 경화특성을 나타내며, 상기 에머리 분말의 함량이 0.1중량% 미만일 경우 작업성, 강도 및 내구성 개선 효과가 미약할 수 있고, 그 함량이 10중량%를 초과할 경우에는 빠른 경화 특성으로 인해 좋은 물성을 얻을 수 있으나 제조 원가가 높아져 경제적이지 못하다. The emery powder is used to improve long-term strength, durability, and fire resistance. It is preferable that the emery powder is contained in an amount of 0.1 to 10% by weight based on the functional binder. When the weight ratio of the emery powder increases, it shows fast curing properties, and when the content of the emery powder is less than 0.1% by weight, the effect of improving workability, strength, and durability may be weak, and when the content exceeds 10% by weight, Good physical properties can be obtained due to the fast curing characteristics, but it is not economical due to the high manufacturing cost.

상기 에틸렌-초산비닐-염화비닐 공중합체는 유·무기물 간의 결합을 유도하고 강도 및 내구성을 개선하기 위하여 사용한다. 상기 에틸렌-초산비닐-염화비닐 공중합체는 상기 기능성 결합재에 대하여 0.1∼10중량% 함유되는 것이 바람직한데, 상기 에틸렌-초산비닐-염화비닐 공중합체의 함량이 0.1중량% 미만일 경우에는 무기물간 결합을 유도하는 효과와 강도, 내염해성 및 동결융해 저항성 등의 내구성을 향상시키는 효과가 미약할 수 있고, 그 함량이 10중량%를 초과하는 경우에는 더 이상의 무기물간 결합 유도 효과와 강도 및 내구성 향상 효과를 기대하기 어렵고 경제적이지 못하다.The ethylene-vinyl acetate-vinyl chloride copolymer is used to induce bonding between organic and inorganic substances and to improve strength and durability. The ethylene-vinyl acetate-vinyl chloride copolymer is preferably contained in an amount of 0.1 to 10% by weight with respect to the functional binder. When the content of the ethylene-vinyl acetate-vinyl chloride copolymer is less than 0.1% by weight, bonding between inorganic substances is performed. The inducing effect and the effect of improving the durability such as strength, salt decomposition resistance and freeze-thaw resistance may be weak, and if the content exceeds 10% by weight, the effect of inducing further bonding between inorganic substances and the effect of improving strength and durability is achieved. It is difficult to expect and not economical.

상기 메틸메타아크릴레이트-스티렌 부타디엔 공중합체는 강도, 인성 및 내구성을 개선하는 역할을 한다. 상기 메틸메타아크릴레이트-스티렌 부타디엔 공중합체는 상기 기능성 결합재에 대하여 0.1∼10중량% 함유되는 것이 바람직한데, 상기 메틸메타아크릴레이트-스티렌 부타디엔 공중합체의 함량이 0.1중량% 미만일 경우에는 부착력 및 인성 개선의 효과가 미약할 수 있고, 그 함량이 10중량%를 초과하는 경우에는 더 이상의 부착력 및 인성 개선 효과를 기대하기 어렵고 경제적이지 못하다. The methyl methacrylate-styrene butadiene copolymer serves to improve strength, toughness and durability. The methyl methacrylate-styrene butadiene copolymer is preferably contained in an amount of 0.1 to 10% by weight based on the functional binder, and when the content of the methyl methacrylate-styrene butadiene copolymer is less than 0.1% by weight, adhesion and toughness are improved. The effect of may be weak, and when the content exceeds 10% by weight, it is difficult to expect further adhesion and toughness improvement effects and is not economical.

상기 아크릴로니트릴-부타디엔-폴리염화비닐 공중합체는 부착 강도, 자외선 저항성 및 내구성을 개선시키기 위해 사용한다. 상기 아크릴로니트릴-부타디엔-폴리염화비닐 공중합체는 상기 기능성 결합재에 대하여 0.1∼10중량% 함유되는 것이 바람직한데, 상기 아크릴로니트릴-부타디엔-폴리염화비닐 공중합체의 함량이 10중량%를 초과하면 상기 성능은 개선되나 작업성 및 가격경쟁력이 떨어질 수 있으며, 그 함량이 0.1중량% 미만이면 작업성은 개선되나, 성능 개선효과가 탄성 및 내구성 개선 효과가 미약할 수 있다.The acrylonitrile-butadiene-polyvinyl chloride copolymer is used to improve adhesion strength, UV resistance and durability. The acrylonitrile-butadiene-polyvinyl chloride copolymer is preferably contained in an amount of 0.1 to 10% by weight with respect to the functional binder. If the content of the acrylonitrile-butadiene-polyvinyl chloride copolymer exceeds 10% by weight The performance is improved, but workability and price competitiveness may be deteriorated. If the content is less than 0.1% by weight, workability is improved, but the performance improvement effect may have weak elasticity and durability improvement effect.

상기 셀룰로오스 아세테이트는 연성, 접착력 및 내구성을 개선하기 위하여 사용한다. 상기 셀룰로오스 아세테이트는 상기 기능성 결합재에 대하여 0.1∼10중량% 함유되는 것이 바람직하며, 상기 셀룰로오스 아세테이트의 함량이 10중량%를 초과하면 성능은 개선되나 경제성이 저하되고, 그 함량이 0.1중량% 미만이면 성능 개선 효과가 미약하고 취성이 강해져 충격강도가 저하될 수 있다.The cellulose acetate is used to improve softness, adhesion and durability. The cellulose acetate is preferably contained in an amount of 0.1 to 10% by weight based on the functional binder, and when the content of the cellulose acetate exceeds 10% by weight, performance is improved but economical efficiency is lowered, and when the content is less than 0.1% by weight, performance The improvement effect is weak and brittleness becomes strong, and the impact strength may decrease.

상기 고성능 감수제는 물-시멘트 비 저하 및 작업성을 확보하기 위해 사용한다. 상기 고성능 감수제는 상기 성능 개선 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. The high-performance water reducing agent is used to lower the water-cement ratio and ensure workability. The high-performance water reducing agent is preferably contained in an amount of 0.01 to 10% by weight based on the performance-improving binder.

상기 경화지연제는 일정 시간 동안 작업성을 확보하기 위해 급격하게 경화되는 것을 지연하기 위하여 사용되는 것으로서, 상기 기능성 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 경화지연제로는 일반적으로 잘 알려진 물질을 사용할 수 있는데, 예컨대 포도당, 글루코오스, 텍스트린, 덱스트란과 같은 당류, 글루콘산, 사과산, 구연산과 같은 산류 또는 그의 염, 아미노카복실산 또는 그의 염, 포스폰산 또는 그의 유도체, 글리세린과 같은 다가알코올 등을 사용할 수 있다. The curing retardant is used to delay rapid curing in order to secure workability for a certain period of time, and is preferably contained in an amount of 0.01 to 10% by weight based on the functional binder. As the curing retardant, generally well-known substances may be used, for example, sugars such as glucose, glucose, textulin, and dextran, acids such as gluconic acid, malic acid, and citric acid, or salts thereof, aminocarboxylic acids or salts thereof, phosphonic acids. Alternatively, derivatives thereof, polyhydric alcohols such as glycerin, and the like can be used.

상기 소포제는 공기량을 조절하여 강도 및 내구성을 개선하기 위해 사용한다. 상기 소포제는 상기 기능성 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. The antifoaming agent is used to improve strength and durability by controlling the amount of air. The antifoaming agent is preferably contained in an amount of 0.01 to 10% by weight based on the functional binder.

상기 규불화마그네슘은 초기 강도 발현, 내마모성, 내화학성 등을 개선하기 위해 사용한다. 상기 규불화마그네슘은 상기 기능성 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하며, 상기 규불화마그네슘의 함량이 10중량%를 초과하면 성능은 개선되나 작업성 및 경제성이 저하되고, 그 함량이 0.01중량% 미만이면 성능 개선효과가 미흡하게 된다. The magnesium silicate is used to improve initial strength expression, abrasion resistance, and chemical resistance. The magnesium silicide is preferably contained in an amount of 0.01 to 10% by weight based on the functional binder, and when the content of the magnesium silicide exceeds 10% by weight, performance is improved but workability and economy are lowered, and the content is 0.01 If it is less than% by weight, the performance improvement effect is insufficient.

상기 티타늄옥사이드는 자외선 저항성 및 재료 분리 저항성을 개선하기 위하여 사용한다. 상기 티타늄옥사이드는 상기 기능성 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 티타늄옥사이드의 중량비가 증가하면 자외선 및 재료분리 저항성 개선 효과를 나타내며, 상기 티타늄옥사이드의 함량이 0.01중량% 미만일 경우 자외선 및 재료분리 저항성 개선 효과가 미약할 수 있고, 상기 티타늄옥사이드의 함량이 10중량%를 초과할 경우에는 성능은 개선되나 강도가 저하되고 가격경쟁력이 떨어진다. The titanium oxide is used to improve UV resistance and material separation resistance. The titanium oxide is preferably contained in an amount of 0.01 to 10% by weight based on the functional binder. When the weight ratio of the titanium oxide increases, it shows the effect of improving UV and material separation resistance, and when the content of the titanium oxide is less than 0.01% by weight, the effect of improving UV and material separation resistance may be weak, and the content of titanium oxide is 10% by weight. When it exceeds %, performance improves, but strength decreases and price competitiveness decreases.

상기 3-아크릴옥시프로필메틸비스(트리메톡시)실란은 반응성을 개선하여 강도 및 내구성을 개선하기 위해 사용한다. 상기 3-아크릴옥시프로필메틸비스(트리메톡시)실란은 상기 기능성 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하며, 상기 3-아크릴옥시프로필메틸비스(트리메톡시)실란의 함량이 10중량%를 초과하면 성능은 개선되나 작업성 및 경제성이 저하되고, 그 함량이 0.01중량% 미만이면 성능 개선효과가 미흡하게 된다. The 3-acryloxypropylmethylbis(trimethoxy)silane is used to improve strength and durability by improving reactivity. The 3-acryloxypropylmethylbis(trimethoxy)silane is preferably contained in an amount of 0.01 to 10% by weight based on the functional binder, and the content of the 3-acryloxypropylmethylbis(trimethoxy)silane is 10% by weight If it exceeds %, the performance is improved, but workability and economy are deteriorated, and if the content is less than 0.01% by weight, the performance improvement effect is insufficient.

상기 폴리아크릴산알킬은 붓자국, 로울러자국, 오렌지필(orange peal), 분화구현상(cratering), 핀홀(pin hole), 색얼룩 등의 표면에 생기는 결함을 방지하기 위하여 사용한다. 상기 폴리아크릴산알킬은 상기 기능성 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 폴리아크릴산알킬의 함량이 10중량%를 초과하면 성능은 개선되나 작업성 및 경제성이 저하되고, 그 함량이 0.01중량% 미만이면 성능 개선효과가 미흡하게 된다. The alkyl polyacrylate is used to prevent defects occurring on the surface such as brush marks, roller marks, orange peal, cratering, pin holes, and color stains. The alkyl polyacrylate is preferably contained in an amount of 0.01 to 10% by weight based on the functional binder. When the content of the alkyl polyacrylate exceeds 10% by weight, performance is improved, but workability and economic efficiency are deteriorated, and when the content is less than 0.01% by weight, the performance improvement effect is insufficient.

상기 테트라플루오로에틸렌-트리플루오로니트로소메탄 공중합체는 강성, 내크리프성, 내약품성, 내후성, 내연소성을 개선하기 위하여 사용한다. 상기 테트라플루오로에틸렌-트리플루오로니트로소메탄 공중합체는 상기 기능성 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 테트라플루오로에틸렌-트리플루오로니트로소메탄 공중합체의 함량이 10중량%를 초과하면 성능은 개선되나 작업성 및 경제성이 저하되고, 그 함량이 0.01중량% 미만이면 성능 개선효과가 미흡하게 된다. The tetrafluoroethylene-trifluoronitrosomethane copolymer is used to improve rigidity, creep resistance, chemical resistance, weather resistance, and combustion resistance. The tetrafluoroethylene-trifluoronitrosomethane copolymer is preferably contained in an amount of 0.01 to 10% by weight based on the functional binder. When the content of the tetrafluoroethylene-trifluoronitrosomethane copolymer exceeds 10% by weight, the performance is improved, but workability and economy are deteriorated, and when the content is less than 0.01% by weight, the performance improvement effect is insufficient. .

상기 알긴산프로필렌글리콜은 재료분리 저항성 및 내수성을 개선하기 위하여 사용한다. 상기 알긴산프로필렌글리콜은 상기 기능성 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 알긴산프로필렌글리콜의 함량이 10중량%를 초과하면 성능은 개선되나 작업성 및 경제성이 저하되고, 그 함량이 0.01중량% 미만이면 성능 개선효과가 미흡하게 된다. The propylene glycol alginate is used to improve material separation resistance and water resistance. The propylene glycol alginate is preferably contained in an amount of 0.01 to 10% by weight based on the functional binder. When the content of propylene glycol alginate exceeds 10% by weight, performance is improved, but workability and economical efficiency are deteriorated, and when the content is less than 0.01% by weight, the performance improvement effect is insufficient.

상기 친수성 섬유는 휨 및 인장강도 개선, 초기소성균열, 파괴인성을 개선하기 위하여 사용한다. 상기 친수성 섬유로서는 폴리프로필렌섬유, 폴리에스터섬유, 나일론 섬유 및 매크로 섬유 중에서 선택된 1종 이상의 물질을 사용하는 것이 바람직하다. 또한, 상기 친수성 섬유는 상기 기능성 결합재에 대하여 0.01∼5중량% 함유되는 것이 바람직하다.The hydrophilic fiber is used to improve flexural and tensile strength, initial plastic cracking, and fracture toughness. As the hydrophilic fiber, it is preferable to use at least one material selected from polypropylene fiber, polyester fiber, nylon fiber, and macro fiber. In addition, the hydrophilic fiber is preferably contained in an amount of 0.01 to 5% by weight based on the functional binder.

상기 잔골재는 실리카질 규사 및 뮬나이트를 포함할 수 있다. 상기 잔골재는 실리카질 규사 70∼99중량% 및 뮬나이트 1∼30중량%를 포함하는 것이 바람직하다.The fine aggregate may include siliceous silica sand and mullite. The fine aggregate preferably contains 70 to 99% by weight of siliceous silica and 1 to 30% by weight of mullite.

일반적으로 골재는 잔골재와 굵은 골재로 구분되며, 굵은골재는 입경 5 ㎜를 초과하는 골재를 의미하고, 이하에서 잔골재라 함은 굵은골재와 대비하여 입경 5 ㎜ 이하의 골재를 의미하는 것으로 사용한다. 원적외선 효과가 우수한 뮬나이트가 혼입된 잔골재를 사용함으로써, 단열성 및 강도가 우수하고, 산성, 염해 등에 대한 내구성이 우수한 장점이 있다. In general, aggregates are divided into fine aggregates and coarse aggregates, and coarse aggregates mean aggregates with a particle diameter exceeding 5 mm, and hereinafter, fine aggregates are used to mean aggregates with a particle diameter of 5 mm or less compared to coarse aggregates. By using a fine aggregate mixed with mullite having an excellent far-infrared ray effect, there are advantages of excellent heat insulation and strength, and excellent durability against acid and salt damage.

상기 실리카질 규사는 입자 크기가 4호사 내지 6호사(0.05∼2.0㎜)인 것이 바람직하다. 상기 실리카질 규사의 입자 크기가 이보다 클 경우에는 상기 콘크리트 구조물 단면 보수·보강용 조성물의 유동성이 저하될 우려가 있고, 이보다 작을 경우에는 상기 콘크리트 구조물 단면 보수·보강용 조성물의 작업성을 저하시킬 수 있다. 상기 실리카질 규사는 잔골재에 대해 70∼99중량% 함유되는 것이 바람직하다. It is preferred that the siliceous silica has a particle size of 4 to 6 (0.05 to 2.0 mm). If the particle size of the siliceous silica sand is larger than this, there is a concern that the fluidity of the composition for repairing and reinforcing the section of the concrete structure may be lowered, and if it is smaller than this, the workability of the composition for repairing and reinforcing the section of the concrete structure may be reduced. have. It is preferable that the siliceous silica is contained in an amount of 70 to 99% by weight based on the fine aggregate.

상기 뮬나이트는 내마모성 및 내화성이 우수한 골재로 상기 콘크리트 구조물 단면 보수·보강용 조성물에서 강도, 내마모성 및 내화성을 높이기 위하여 사용한다. 상기 뮬나이트는 상기 잔골재에 대해 1∼30중량% 함유되는 것이 바람직하다. The mullite is an aggregate having excellent wear resistance and fire resistance, and is used to increase strength, abrasion resistance, and fire resistance in the composition for repairing and reinforcing the cross section of concrete structures. The mullite is preferably contained in an amount of 1 to 30% by weight based on the fine aggregate.

상기 그래핀 분산액은 물-시멘트 비를 저감하여 강도, 특히 휨 및 인장강도를 개선함과 동시에 방수성, 내식성, 내마모성 등의 내구성능을 개선하기 위하여 사용한다. 상기 그래핀 분산액은 상기 기능성 결합재에 대하여 0.01∼10중량% 함유되는 것이 바람직하다. 상기 그래핀 분산액의 함량이 0.01중량% 미만이면 성능개선효과가 저하되고, 그 함량이 10중량%를 초과하면 성능은 개선되나 작업성 및 경제성이 저하된다. The graphene dispersion is used to reduce the water-cement ratio to improve strength, in particular, flexural and tensile strength, and at the same time improve durability such as waterproofness, corrosion resistance, and abrasion resistance. The graphene dispersion is preferably contained in an amount of 0.01 to 10% by weight based on the functional binder. If the content of the graphene dispersion is less than 0.01% by weight, the performance improvement effect is lowered, and if the content exceeds 10% by weight, the performance is improved, but workability and economical efficiency are lowered.

본 발명에 따른 그래핀 분산액은 용매 내에 그래핀 분말 입자가 분산된 형태이다. 일반적으로 그래핀은 탄소원자들이 2차원 상에서 sp2결합에 의한 육각형 벌집모양의 배열로 구성되어 있으며 원자 한 층의 두께를 가진 반금속성 물질로, 구조적, 화학적으로 매우 안정할 뿐만 아니라, 우수한 기계적 물성과 뛰어난 전기, 열 전도체로서의 특징을 가지고 있다. 또한, 그래핀은 비표면적이 2,000∼3,000m2/g으로 매우 크며, 철의 100배 정도의 인장강도, 수소나 헬륨 원소도 차단하는 높은 기밀성을 가져 내구성이 우수하다. 하지만, 그래핀을 분말상태로 사용하기에는 분말도가 너무 커서 혼입이 어렵기 때문에 사용성을 개선하기 위하여 그래핀을 물에 분산하여 사용하는 것이 바람직하다.The graphene dispersion according to the present invention is a form in which graphene powder particles are dispersed in a solvent. In general, graphene is a semi-metallic material consisting of a hexagonal honeycomb arrangement in which carbon atoms are formed by sp 2 bonds in two dimensions, and is a semi-metallic material having a thickness of one atom. It is structurally and chemically very stable, as well as excellent mechanical properties. And excellent electric and thermal conductors. In addition, graphene has a very large specific surface area of 2,000 to 3,000 m 2 /g, has a tensile strength of about 100 times that of iron, and has high airtightness that blocks hydrogen and helium elements, so it has excellent durability. However, it is preferable to use graphene by dispersing it in water in order to improve usability, since it is difficult to mix the graphene because the powder is too large to be used in a powder state.

본 발명에 따라, 그래핀 분산액의 제조는 냉각수 자켓이 장착된 10ℓ 반응기에 40 ml의 citric acid (농도; 1mg/ml) 수용액에 나노 그래핀을 Teflon-lined autoclave에 넣고 200℃에서 3 시간 동안 교반한 후, 상온으로 냉각시킨 후에 NaOH를 이용해서 pH를 8로 조절하여 제조한다. 이때 용액 내 분산된 그래핀의 농도는 0.001~30중량%의 범위이지만, 이에 제한되지 않는다.According to the present invention, the preparation of the graphene dispersion is carried out by adding nano-graphene in a 40 ml citric acid (concentration; 1 mg/ml) aqueous solution in a 10 liter reactor equipped with a cooling water jacket in a Teflon-lined autoclave and stirring at 200° C. for 3 hours. Then, after cooling to room temperature, it is prepared by adjusting the pH to 8 using NaOH. At this time, the concentration of the graphene dispersed in the solution is in the range of 0.001 to 30% by weight, but is not limited thereto.

본 발명의 바람직한 실시예에 따른 콘크리트 구조물 단면 보수·보강용 조성물은 기능성 결합재 5∼70중량% 및 잔골재 5∼90중량%를 강제식 믹서 또는 진공형 믹서에서 프리믹싱한 후, 그래핀 분산액 0.1~10중량% 및 물 1∼25중량%을 첨가하여 강제식 믹서나 연속식 믹서로 소정 시간(예컨대, 1∼5분) 동안 믹싱하여 제조할 수 있다. The composition for repairing and reinforcing the cross-section of a concrete structure according to a preferred embodiment of the present invention includes 5 to 70% by weight of a functional binder and 5 to 90% by weight of fine aggregates are premixed in a forced mixer or a vacuum mixer, and then the graphene dispersion is 0.1 to It can be prepared by adding 10% by weight and 1 to 25% by weight of water and mixing with a forced mixer or a continuous mixer for a predetermined time (eg, 1 to 5 minutes).

본 발명은 상술한 콘크리트 구조물 단면 보수·보강용 조성물을 이용한 콘크리트 구조물 보수·보강 공법을 제시한다. 이하에서, 콘크리트 구조물이라 함은 도로시설물 (도로 측구, 중앙분리대, 날개벽 등) 도로 포장 구조물, 도로의 노면, 교량 구조물 (교면포장, 교량 상·하부 슬래브, 교각, 기초), 지하 구조물 (하수암거, 하수관거, 하수박스), 지수 구조물 (수로, 수로교, 도수터널) 등의 구조물로서 콘크리트로 이루어진 모든 구조물을 포함하는 의미로 사용한다. The present invention proposes a concrete structure repair and reinforcement method using the above-described concrete structure section repair and reinforcement composition. Hereinafter, concrete structures are referred to as road facilities (road sides, median strips, wing walls, etc.), road pavement structures, road surfaces, bridge structures (pave bridges, bridge upper and lower slabs, bridge piers, foundations), underground structures (sewer culverts, etc.) , Sewage pipes, sewage boxes), water-water structures (waterways, waterway bridges, water supply tunnels), etc. It is used to include all structures made of concrete.

본 발명의 바람직한 실시예에 따른 콘크리트 구조물 보수·보강 공법은, 콘크리트의 레이탄스, 불순물, 열화부위 등을 그라인더, 평삭기, 숏블라스터 또는 핸드 워터젯으로 치핑하여 제거하고 흡입장치 등을 이용하여 청소하는 단계와, 청소된 부위의 수분함수율을 확인한 후에 구체 콘크리트와 상기 콘크리트 구조물 단면 보수·보강용 조성물의 부착성을 개선하고, 유해물질, 물 등의 침투를 방지하기 위한 프라이머 또는 블루밍 처리하는 단계와, 상기 프라이머 또는 플루밍 처리된 상부에 상기 콘크리트 구조물 단면 보수·보강용 조성물을 타설한 후 표면 마무리하는 단계와 내마모성, 내오염성, 중성화 저항성, 내염해성, 동결융해 저항성, 자외선 저항성 등의 표층강화 및 내구성을 개선하기 위하여 표면 보호·강화제로 표면을 마감하는 단계; 및 양생하는 단계를 포함하는 것을 특징으로 하는 콘크리트 구조물 보수·보강 공법을 제공한다. In the concrete structure repair and reinforcement method according to a preferred embodiment of the present invention, the latance, impurities, and deteriorated areas of concrete are removed by chipping with a grinder, planing machine, shot blaster, or hand water jet, and cleaned using a suction device. Steps and, after checking the moisture content of the cleaned area, improving the adhesion of the concrete concrete and the composition for repairing and reinforcing the cross section of the concrete structure, and performing a primer or blooming treatment to prevent penetration of harmful substances and water, After pouring the composition for repairing and reinforcing the cross-section of the concrete structure on the upper part of the primer or flummed treatment, surface finishing and surface reinforcement and durability such as abrasion resistance, stain resistance, neutralization resistance, salt resistance, freeze-thaw resistance, UV resistance, etc. Finishing the surface with a surface protection/reinforcement agent in order to improve it; And it provides a concrete structure repair and reinforcement method comprising the step of curing.

상기 청소하는 단계는 보수면적이 큰 경우의 부위를 청소할 경우에는 진공흡입차량으로 이용하여 청소하는 단계를 더 포함할 수 있다. The cleaning may further include a step of cleaning by using a vacuum suction vehicle when cleaning a portion of a large maintenance area.

상기 프라이머는 스티렌-부타디엔, 폴리에틸렌초산비닐, 폴리 아크릴 에스테르 및 아크릴계 에멀젼 중에서 선택된 1종 이상의 물질을 포함할 수 있다. The primer may include at least one material selected from styrene-butadiene, polyethylene vinyl acetate, polyacrylic ester, and acrylic emulsion.

이하에서, 본 발명에 따른 콘크리트 구조물 단면 보수·보강용 조성물의 실시예들을 더욱 구체적으로 제시하며, 다음에 제시하는 실시예들에 의하여 본 발명이 한정되는 것은 아니다. Hereinafter, examples of the composition for repairing and reinforcing the cross section of a concrete structure according to the present invention are presented in more detail, and the present invention is not limited by the following examples.

그래핀 분산액의 제조예Preparation example of graphene dispersion

냉각수 자켓이 장착된 10ℓ 반응기에 40 ml의 citric acid (농도; 1mg/ml) 수용액에 나노 그래핀을 Teflon-lined autoclave에 넣고 200℃에서 3시간 동안 교반한 후, 상온으로 냉각시킨 후에 NaOH를 이용해서 pH를 8로 조절하여 그래핀 분산액을 제조한다. 그래핀 분산액 내 분산된 그래핀의 농도는 15중량%로 조절하였다.In a 10ℓ reactor equipped with a cooling water jacket, nano graphene was added to a 40 ml citric acid (concentration; 1mg/ml) aqueous solution in a Teflon-lined autoclave, stirred at 200℃ for 3 hours, cooled to room temperature, and then NaOH was used. Then, the pH is adjusted to 8 to prepare a graphene dispersion. The concentration of graphene dispersed in the graphene dispersion was adjusted to 15% by weight.

<실시예 1><Example 1>

조강 포틀랜드 시멘트 35kg, 칼슘설포알루미네이트 20kg, 칼슘클로로알루미네이트 10kg, 중공형 실리카 5kg, 규조토 5kg, 석고 5kg, 리튬실리케이트-포타슘실리케이트 혼합물 5kg, 벤토나이트 5kg, 에머리 분말 1kg, 에틸렌-초산비닐-염화비닐 공중합체 1kg, 메틸메타아크릴레이트-스티렌 부타디엔 공중합체 1kg, 아크릴로니트릴-부타디엔-폴리염화비닐 공중합체 1kg, 셀룰로오스 아세테이트 1kg, 폴리칼본산계 감수제 0.5kg, 경화지연제로서 구연산 0.5kg, 실리콘계 소포제 0.5kg, 친수성 섬유로서 나일론 섬유 0.5kg, 규불화마그네슘 0.5kg, 티타늄옥사이드 0.5kg, 3-아크릴옥시프로필메틸비스(트리메톡시)실란 0.5kg, 폴리아크릴산알킬 0.5kg, 테트라플루오로에틸렌-트리플루오로니트로소메탄 공중합체 0.5kg 및 알긴산프로필렌글리콜 0.5kg를 혼합하여 기능성 결합재 100kg을 얻었다.Crude Portland Cement 35kg, Calcium Sulfoaluminate 20kg, Calcium Chloroaluminate 10kg, Hollow Silica 5kg, Diatomaceous Earth 5kg, Gypsum 5kg, Lithium Silicate-potassium Silicate Mixture 5kg, Bentonite 5kg, Emery Powder 1kg, Ethylene-Vinyl Acetate-Vinyl Chloride 1 kg of copolymer, 1 kg of methyl methacrylate-styrene butadiene copolymer, 1 kg of acrylonitrile-butadiene-polyvinyl chloride copolymer, 1 kg of cellulose acetate, 0.5 kg of polycarboxylic acid water reducing agent, 0.5 kg of citric acid as a curing retardant, 0.5 kg of silicone antifoam kg, as a hydrophilic fiber, nylon fiber 0.5 kg, magnesium silicate 0.5 kg, titanium oxide 0.5 kg, 3-acryloxypropylmethylbis (trimethoxy) silane 0.5 kg, alkyl polyacrylate 0.5 kg, tetrafluoroethylene-trifluoro 0.5 kg of a nitrosomethane copolymer and 0.5 kg of propylene glycol alginate were mixed to obtain 100 kg of a functional binder.

상기에서 얻어진 기능성 결합재 40kg 및 실리카질 규사 및 뮬나이트가 9:1의 중량비로 혼합된 잔골재 50kg를 강제식 믹서에서 프리믹싱한 후, 상기에서 제조한 그래핀 분산액 1kg 및 물 9kg를 첨가한 다음 2분간 교반하여 콘크리트 구조물 단면 보수·보강용 조성물 100kg을 제조하였다. 40 kg of the functional binder obtained above and 50 kg of fine aggregate mixed in a weight ratio of 9:1 of siliceous silica sand and mullite were premixed in a forced mixer, and then 1 kg of the graphene dispersion prepared above and 9 kg of water were added. By stirring for a minute, 100 kg of a composition for repairing and reinforcing a section of a concrete structure was prepared.

<실시예 2><Example 2>

조강 포틀랜드 시멘트 33kg, 칼슘설포알루미네이트 20kg, 칼슘클로로알루미네이트 10kg, 중공형 실리카 5kg, 규조토 5kg, 석고 5kg, 리튬실리케이트-포타슘실리케이트 혼합물 5kg, 벤토나이트 5kg, 에머리 분말 1kg, 에틸렌-초산비닐-염화비닐 공중합체 1.5kg, 메틸메타아크릴레이트-스티렌 부타디엔 공중합체 1.5kg, 아크릴로니트릴-부타디엔-폴리염화비닐 공중합체 1.5kg, 셀룰로오스 아세테이트 1.5kg, 폴리칼본산계 감수제 0.5kg, 경화지연제로서 구연산 0.5kg, 실리콘계 소포제 0.5kg, 친수성 섬유로서 나일론 섬유 0.5kg, 규불화마그네슘 0.5kg, 티타늄옥사이드 0.5kg, 3-아크릴옥시프로필메틸비스(트리메톡시)실란 0.5kg, 폴리아크릴산알킬 0.5kg, 테트라플루오로에틸렌-트리플루오로니트로소메탄 공중합체 0.5kg 및 알긴산프로필렌글리콜 0.5kg를 혼합하여 기능성 결합재 100kg을 얻었다.Crude Portland Cement 33kg, Calcium Sulfoaluminate 20kg, Calcium Chloroaluminate 10kg, Hollow Silica 5kg, Diatomaceous Earth 5kg, Gypsum 5kg, Lithium Silicate-potassium Silicate Mixture 5kg, Bentonite 5kg, Emery Powder 1kg, Ethylene-Vinyl Acetate-Vinyl Chloride Copolymer 1.5kg, methylmethacrylate-styrene butadiene copolymer 1.5kg, acrylonitrile-butadiene-polyvinyl chloride copolymer 1.5kg, cellulose acetate 1.5kg, polycarboxylic acid water reducer 0.5kg, citric acid 0.5kg as a curing retardant , Silicone antifoaming agent 0.5kg, nylon fiber 0.5kg as hydrophilic fiber, magnesium silicide 0.5kg, titanium oxide 0.5kg, 3-acryloxypropylmethylbis(trimethoxy)silane 0.5kg, alkyl polyacrylate 0.5kg, tetrafluoro 0.5 kg of ethylene-trifluoronitrosomethane copolymer and 0.5 kg of propylene glycol alginate were mixed to obtain 100 kg of a functional binder.

상기에서 얻어진 기능성 결합재 40kg 및 실리카질 규사 및 뮬나이트가 9:1의 중량비로 혼합된 잔골재 50kg를 강제식 믹서에서 프리믹싱한 후, 상기에서 제조한그래핀 분산액 1kg 및 물 9kg를 첨가한 다음 2분간 교반하여 콘크리트 구조물 단면 보수·보강용 조성물 100kg을 제조하였다. 40 kg of the functional binder obtained above and 50 kg of fine aggregates in which the silica sand and mullite were mixed in a weight ratio of 9:1 were premixed in a forced mixer, and then 1 kg of the graphene dispersion prepared above and 9 kg of water were added. By stirring for a minute, 100 kg of a composition for repairing and reinforcing a section of a concrete structure was prepared.

<실시예 3><Example 3>

조강 포틀랜드 시멘트 31kg, 칼슘설포알루미네이트 20kg, 칼슘클로로알루미네이트 10kg, 중공형 실리카 5kg, 규조토 5kg, 석고 5kg, 리튬실리케이트-포타슘실리케이트 혼합물 5kg, 벤토나이트 5kg, 에머리 분말 1kg, 에틸렌-초산비닐-염화비닐 공중합체 2kg, 메틸메타아크릴레이트-스티렌 부타디엔 공중합체 2kg, 아크릴로니트릴-부타디엔-폴리염화비닐 공중합체 2kg, 셀룰로오스 아세테이트 2kg, 폴리칼본산계 감수제 0.5kg, 경화지연제로서 구연산 0.5kg, 실리콘계 소포제 0.5kg, 친수성 섬유로서 나일론 섬유 0.5kg, 규불화마그네슘 0.5kg, 티타늄옥사이드 0.5kg, 3-아크릴옥시프로필메틸비스(트리메톡시)실란 0.5kg, 폴리아크릴산알킬 0.5kg, 테트라플루오로에틸렌-트리플루오로니트로소메탄 공중합체 0.5kg 및 알긴산프로필렌글리콜 0.5kg를 혼합하여 기능성 결합재 100kg을 얻었다.Crude Portland Cement 31kg, Calcium Sulfoaluminate 20kg, Calcium Chloroaluminate 10kg, Hollow Silica 5kg, Diatomaceous Earth 5kg, Gypsum 5kg, Lithium Silicate-potassium Silicate Mixture 5kg, Bentonite 5kg, Emery Powder 1kg, Ethylene-Vinyl Acetate-Vinyl Chloride 2 kg of copolymer, 2 kg of methyl methacrylate-styrene butadiene copolymer, 2 kg of acrylonitrile-butadiene-polyvinyl chloride copolymer, 2 kg of cellulose acetate, 0.5 kg of polycarboxylic acid water reducing agent, 0.5 kg of citric acid as a curing retardant, 0.5 kg of silicone antifoam kg, as a hydrophilic fiber, nylon fiber 0.5 kg, magnesium silicate 0.5 kg, titanium oxide 0.5 kg, 3-acryloxypropylmethylbis (trimethoxy) silane 0.5 kg, alkyl polyacrylate 0.5 kg, tetrafluoroethylene-trifluoro 0.5 kg of a nitrosomethane copolymer and 0.5 kg of propylene glycol alginate were mixed to obtain 100 kg of a functional binder.

상기에서 얻어진 기능성 결합재 40kg 및 실리카질 규사 및 뮬나이트가 9:1의 중량비로 혼합된 잔골재 50kg를 강제식 믹서에서 프리믹싱한 후, 상기에서 제조한그래핀 분산액 1kg 및 물 9kg를 첨가한 다음 2분간 교반하여 콘크리트 구조물 단면 보수·보강용 조성물 100kg을 제조하였다. 40 kg of the functional binder obtained above and 50 kg of fine aggregates in which the silica sand and mullite were mixed in a weight ratio of 9:1 were premixed in a forced mixer, and then 1 kg of the graphene dispersion prepared above and 9 kg of water were added. By stirring for a minute, 100 kg of a composition for repairing and reinforcing a section of a concrete structure was prepared.

본 발명에 따른 실시예 1 내지 실시예 3의 특성을 보다 용이하게 파악할 수 있도록 비교예를 제시한다. 후술하는 비교예 1은 실시예들의 특성과 단순히 비교하기 위하여 제시하는 것으로 본 발명의 선행기술이 아님을 밝혀둔다.A comparative example is presented so that the characteristics of Examples 1 to 3 according to the present invention can be more easily grasped. It should be noted that Comparative Example 1 to be described later is not a prior art of the present invention as provided for simply comparing the characteristics of the examples.

<비교예 1><Comparative Example 1>

조강 포틀랜드 시멘트 40kg, 잔골재 50kg 및 에틸렌-초산비닐-염화비닐 공중합체 4kg를 강제식 믹서에서 프리믹싱한 후, 물 6kg를 첨가하여 다시 2분간 교반하여 폴리머 시멘트 모르타르 조성물 100kg을 제조하였다. After premixing 40 kg of crude Portland cement, 50 kg of fine aggregate, and 4 kg of ethylene-vinyl acetate-vinyl chloride copolymer in a forced mixer, 6 kg of water was added and stirred for 2 minutes to prepare 100 kg of a polymer cement mortar composition.

<시험예><Test Example>

아래의 실험들은 본 발명에 따른 실시예 1 내지 실시예 3의 특성을 보다 용이하게 파악할 수 있도록 본 발명에 따른 실시예들과 비교예 1의 특성을 비교한 실험결과들을 나타낸 것이다.The following experiments show experimental results comparing the characteristics of Examples according to the present invention and Comparative Example 1 so that the characteristics of Examples 1 to 3 according to the present invention can be more easily grasped.

실험 1 (강도 측정) Experiment 1 (intensity measurement)

실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 보수ㆍ보강용 조성물과 비교예 1에서 제조한 폴리머 시멘트 모르타르 조성물의 물리적 특성을 비교하기 위하여, 상기에서 설명한 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물과 비교예 1에 의하여 제조된 폴리머 시멘트 모르타르 조성물을 KS F 4042(콘크리트 구조물 보수용 폴리머 시멘트 모르타르)에 의하여 압축, 휨 및 부착강도 시험을 수행하였고, 그 결과를 하기 표 1에 나타냈다. To compare the physical properties of the composition for repairing and reinforcing concrete structures prepared according to Examples 1 to 3 with the polymer cement mortar composition prepared in Comparative Example 1, prepared according to Examples 1 to 3 described above. The composition for repairing and reinforcing the cross section of the concrete structure and the polymer cement mortar composition prepared according to Comparative Example 1 were subjected to compression, flexural and adhesion strength tests by KS F 4042 (polymer cement mortar for repairing concrete structures). It is shown in Table 1 below.

구분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 강도
(MPa)
burglar
(MPa)
warp 10.510.5 11.811.8 13.013.0 9.59.5
압축compression 54.054.0 57.057.0 60.060.0 51.251.2 접착adhesion 표준조건Standard condition 2.12.1 2.22.2 2.42.4 1.91.9 온냉반복후After heating and cooling repeat 2.12.1 2.22.2 2.32.3 1.71.7

상기 표 1에 나타난 바와 같이, 본 발명의 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물의 휨, 압축 및 부착강도는 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물에 비하여 월등히 높았다. As shown in Table 1, the flexural, compressive, and adhesion strength of the composition for repairing and reinforcing the cross-section of concrete structures prepared according to Examples 1 to 3 of the present invention was determined by the polymer cement mortar composition prepared according to Comparative Example 1. It was much higher than that.

실험 2 (길이변화율 측정) Experiment 2 (Measurement of length change rate)

본 발명의 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물과 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물을 KS F 4042(콘크리트 구조물 보수용 폴리머 시멘트 모르타르)에 의하여 길이변화율을 측정하였으며, 그 결과를 하기 표 2에 나타냈다.The length of the composition for repairing and reinforcing the cross section of concrete structures prepared according to Examples 1 to 3 of the present invention and the polymer cement mortar composition prepared according to Comparative Example 1 were prepared by KS F 4042 (polymer cement mortar for repairing concrete structures). The rate of change was measured, and the results are shown in Table 2 below.

구분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 길이변화율(%)Length change rate (%) 0.030.03 0.020.02 0.010.01 0.080.08

위의 표 2에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물이 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물에 비하여 길이변화율이 감소되어 수축 저감 효과가 있음을 확인할 수 있었다.As shown in Table 2 above, the composition for repairing and reinforcing the cross-section of concrete structures prepared according to Examples 1 to 3 was reduced in length change rate compared to the polymer cement mortar composition prepared according to Comparative Example 1, thereby reducing the shrinkage effect. It could be confirmed that there is.

실험 3 (투수량 측정) Experiment 3 (measurement of water permeability)

본 발명의 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물과 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물을 KS F 4042(콘크리트 구조물 보수용 폴리머 시멘트 모르타르)에 규정한 방법에 따라 투수량의 측정 결과를 아래의 표 3에 나타냈다. 투수량이 높으면 불순물이나 물이 콘크리트의 내부로 침투하게 되면 콘크리트의 내부에 기공률이 증가하게 되어 구조물의 파손을 초래하는 문제가 발생한다.The composition for repairing and reinforcing the cross section of concrete structures prepared according to Examples 1 to 3 of the present invention and the polymer cement mortar composition prepared according to Comparative Example 1 were specified in KS F 4042 (polymer cement mortar for repairing concrete structures). The measurement results of the water permeability according to the method are shown in Table 3 below. If the water permeability is high, when impurities or water penetrate into the concrete, the porosity increases in the concrete, causing the structure to be damaged.

구분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 투수량(g)Water permeability (g) 0.250.25 0.150.15 0.120.12 0.400.40

위의 표 3에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물은 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물에 비하여 투수량이 낮았다.As shown in Table 3 above, the composition for repairing and reinforcing the cross-section of concrete structures prepared according to Examples 1 to 3 had a lower water permeability compared to the polymer cement mortar composition prepared according to Comparative Example 1.

실험 4 (염화물 이온 침투 저항성 측정) Experiment 4 (Measurement of chloride ion penetration resistance)

본 발명의 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물과 비교예 1 에 따라 제조된 폴리머 시멘트 모르타르 조성물을 KS F 4042(콘크리트 구조물 보수용 폴리머 시멘트 모르타르)에 의한 염화물 이온 침투 저항성시험을 수행하였고, 그 결과를 하기 표 4에 나타냈다.The composition for repairing and reinforcing the cross section of concrete structures prepared according to Examples 1 to 3 of the present invention and the polymer cement mortar composition prepared according to Comparative Example 1 were used as chlorides by KS F 4042 (polymer cement mortar for repairing concrete structures). Ion penetration resistance test was performed, and the results are shown in Table 4 below.

구분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 염화물 이온 침투 저항성
(coulombs)
Chloride ion penetration resistance
(coulombs)
415415 345345 290290 498498

위의 표 4에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물이 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물에 비하여 염화물 이온 침투 저항성이 적게 나타나 염해에 대한 저항성이 높음을 확인할 수 있었다. As shown in Table 4 above, the composition for repairing and reinforcing the cross-section of concrete structures prepared according to Examples 1 to 3 showed less resistance to chloride ion penetration than the polymer cement mortar composition prepared according to Comparative Example 1. It was confirmed that the resistance to the high was high.

실험 5 (중성화 저항성 측정) Experiment 5 (measurement of neutralization resistance)

본 발명의 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물과 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물을 KS F 4042(콘크리트 구조물 보수용 폴리머 시멘트 모르타르)에 의한 중성화 저항성 시험을 수행하였고, 그 결과를 하기 표 5에 나타냈다.Neutralization of the composition for repairing and reinforcing the cross section of concrete structures prepared according to Examples 1 to 3 of the present invention and the polymer cement mortar composition prepared according to Comparative Example 1 by KS F 4042 (polymer cement mortar for repairing concrete structures) A resistance test was performed, and the results are shown in Table 5 below.

구분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 중성화 저항성 (mm)Neutralization resistance (mm) 0.180.18 0.140.14 0.100.10 0.240.24

위의 표 5에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물이 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물에 비하여 중성화 침투 깊이가 적게 나타나 중성화에 대한 저항성이 높음을 확인할 수 있었다. As shown in Table 5 above, the composition for repairing and reinforcing the cross-section of concrete structures prepared according to Examples 1 to 3 showed less penetration depth than the polymer cement mortar composition prepared according to Comparative Example 1. It was confirmed that resistance was high.

실험 6 (내약품성 측정) Experiment 6 (Measurement of chemical resistance)

본 발명의 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물과 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물을 일본 공업 규격 원안 [콘크리트의 용액침적에 의한 내약품성 시험 방법]에 준하여 2% 염산, 5% 황산 및 45% 수산화 나트륨의 수용액을 시험 용액으로 28일 공시체를 침적하여 내약품성 시험의 측정결과를 아래의 표 6에 나타냈다. A composition for repairing and reinforcing the cross section of a concrete structure prepared according to Examples 1 to 3 of the present invention and a polymer cement mortar composition prepared according to Comparative Example 1 were prepared in the original Japanese Industrial Standard [Method for chemical resistance test by solution deposition of concrete ], the test solution was immersed in an aqueous solution of 2% hydrochloric acid, 5% sulfuric acid and 45% sodium hydroxide for 28 days, and the measurement results of the chemical resistance test are shown in Table 6 below.

구분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 중량변화율
(%)
Weight change rate
(%)
염산Hydrochloric acid -0.6-0.6 -0.5-0.5 -0.4-0.4 -1.0-1.0
황산Sulfuric acid -0.01-0.01 00 0.10.1 -0.1-0.1 수산화나트륨Sodium hydroxide +0.4+0.4 +0.7+0.7 +0.9+0.9 +0.1+0.1

위의 표 6에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물이 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물에 비하여 내약품성에 대한 중량변화율이 적게 나타나 내약품성에 대한 저항성이 높음을 확인할 수 있었다. As shown in Table 6 above, the composition for repairing and reinforcing the cross section of concrete structures prepared according to Examples 1 to 3 showed less weight change rate for chemical resistance compared to the polymer cement mortar composition prepared according to Comparative Example 1. It was confirmed that resistance to chemical resistance was high.

실험 7 (동결융해저항성 측정) Experiment 7 (measurement of freezing and melting resistance)

본 발명의 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물과 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물을 KS F 2456에 규정한 방법에 따라 동결융해저항성 시험의 측정 결과를 아래의 표 7에 나타냈다. 동결융해는 콘크리트에 모세관 내에 흡수된 수분이 결빙되고 녹는 것을 말하는 것으로, 동결융해가 반복되면 콘크리트 조직에 미세한 균열이 발생하게 되어 내구성이 저하되는 문제가 발생하게 된다. 표 7은 동결융해 저항성 시험에 따른 각각의 실시예들 및 비교예들의 내구성지수를 표시한 것이다. Measurement of freeze-thaw resistance test of the composition for repairing and reinforcing the cross section of concrete structures prepared according to Examples 1 to 3 of the present invention and the polymer cement mortar composition prepared according to Comparative Example 1 according to the method specified in KS F 2456 The results are shown in Table 7 below. Freeze-thawing refers to freezing and melting of moisture absorbed in the capillary in concrete. If freeze-thawing is repeated, micro-cracks may occur in the concrete structure, resulting in a problem of deteriorating durability. Table 7 shows the durability index of each of the Examples and Comparative Examples according to the freeze-thaw resistance test.

구분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 내구성 지수Durability index 9393 9494 9595 9090

위의 표 7에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물이 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물에 비하여 내구성 지수가 월등히 높으므로, 내구성이 향상된 것을 알 수 있다.As shown in Table 7 above, since the composition for repairing and reinforcing the cross section of concrete structures prepared according to Examples 1 to 3 has a significantly higher durability index compared to the polymer cement mortar composition prepared according to Comparative Example 1, It can be seen that it is improved.

실험 8 (내알칼리성 측정) Experiment 8 (measurement of alkali resistance)

본 발명의 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물과 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물의 내알칼리성 시험을 KS F 4042 (콘크리트 구조물 보수용 폴리머 시멘트 모르타르)에 준하여 포화 수산화 칼슘 용액(50±2)℃에서 28일 동안 담근 후 상온으로 냉각시켜 압축강도를 측정하여 내알칼리성 시험을 실시한 측정결과를 아래의 표 8에 나타냈다. The alkali resistance test of the composition for repairing and reinforcing the cross-section of concrete structures prepared according to Examples 1 to 3 of the present invention and the polymer cement mortar composition prepared according to Comparative Example 1 was conducted in KS F 4042 (Polymer cement mortar for repairing concrete structures. ), after immersing in a saturated calcium hydroxide solution (50±2)° C. for 28 days, cooling to room temperature to measure the compressive strength, and conducting an alkali resistance test. The measurement results are shown in Table 8 below.

구분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 압축강도
(MPa)
Compressive strength
(MPa)
49.049.0 51.251.2 55.155.1 45.245.2

위의 표 8에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물이 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물에 비하여 압축강도가 높게 나타나 내알칼리성에 대한 저항성이 높음을 확인할 수 있었다.As shown in Table 8 above, the composition for repairing and reinforcing the cross-section of concrete structures prepared according to Examples 1 to 3 showed higher compressive strength compared to the polymer cement mortar composition prepared according to Comparative Example 1. It was confirmed that resistance was high.

실험 9 (습기 투과 저항성 측정) Experiment 9 (measurement of moisture permeation resistance)

본 발명의 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물과 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물을 KS F 4042(콘크리트 구조물 보수용 폴리머 시멘트 모르타르)에 의한 습기투과 저항성 시험을 수행하였고, 그 결과를 하기 표 9에 나타냈다.Moisture by KS F 4042 (polymer cement mortar for repairing concrete structures) of the composition for repairing and reinforcing the cross-section of concrete structures prepared according to Examples 1 to 3 of the present invention and the polymer cement mortar composition prepared according to Comparative Example 1 The permeation resistance test was performed, and the results are shown in Table 9 below.

구분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 습기 투과 저항성 (m)Moisture permeation resistance (m) 0.30.3 0.250.25 0.20.2 0.50.5

위의 표 9에서와 같이, 실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물이 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물에 비하여 습기투과 저항성이 적게 나타나 습기 투과에 대한 저항성이 높음을 확인할 수 있었다. As shown in Table 9 above, the composition for repairing and reinforcing the cross-section of concrete structures prepared according to Examples 1 to 3 showed less resistance to moisture permeation compared to the polymer cement mortar composition prepared according to Comparative Example 1. It was confirmed that the resistance to the high was high.

실험 10Experiment 10

실시예 1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물과 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물을 KFIA-FI-1004에 의하여 암모니아 가스검지관에 따른 탈취성 시험을 수행하였고, KS F 4039에 의하여 열전도율 시험을 수행하였고, 4-point probe method로 전기 전도도 시험을 수행하여 각각의 결과를 하기 표 10에 나타내었다. The composition for repairing and reinforcing the cross section of concrete structures prepared according to Examples 1 to 3 and the polymer cement mortar composition prepared according to Comparative Example 1 were subjected to a deodorization test according to an ammonia gas detection tube according to KFIA-FI-1004. Then, a thermal conductivity test was performed by KS F 4039, and an electrical conductivity test was performed by a 4-point probe method, and the results are shown in Table 10 below.

구분division 실시예 1Example 1 실시예 2Example 2 실시예 3Example 3 비교예 1Comparative Example 1 탈취성 (탈취율, %)Deodorization (deodorization rate, %) 8383 8585 8888 7575 열전도율 (W/mk)Thermal conductivity (W/mk) 10.210.2 10.410.4 10.510.5 1.011.01 전기전도도 (S/m)Electrical conductivity (S/m) 11.011.0 11.611.6 12.012.0 5.85.8

위의 표 10과 같이, 실시예1 내지 실시예 3에 따라 제조된 콘크리트 구조물 단면 보수·보강용 조성물이 비교예 1에 따라 제조된 폴리머 시멘트 모르타르 조성물에 비하여 우수한 결과를 나타내었다.As shown in Table 10 above, the compositions for repairing and reinforcing the cross-section of concrete structures prepared according to Examples 1 to 3 showed superior results compared to the polymer cement mortar composition prepared according to Comparative Example 1.

이상, 본 발명의 바람직한 실시예를 들어 상세하게 설명하였으나, 본 발명은 상기 실시예에 한정되는 것은 아니며, 본 발명의 기술적 사상의 범위 내에서 해당 기술분야에서 통상의 지식을 가진 자에 의하여 여러 가지 변형이 가능하다.In the above, although the preferred embodiment of the present invention has been described in detail, the present invention is not limited to the above embodiment, and within the scope of the technical idea of the present invention, various Transformation is possible.

Claims (8)

콘크리트 구조물 단면 보수·보강용 폴리머 시멘트 모르타르 조성물로서,
기능성 결합재 40중량%, 잔골재 50중량%, 그래핀 분산액 1중량% 및 물 9중량%를 포함하고,
상기 기능성 결합재는, 기능성 결합재의 중량 대비, 조강 포틀랜드 시멘트 31∼35중량%, 칼슘 또는 마그네슘설포알루미네이트 20중량%, 칼슘클로로알루미네이트 10중량%, 중공형 실리카 5중량%, 규조토 5중량%, 석고 5중량%, 리튬실리케이트-포타슘실리케이트 혼합물 5중량%, 벤토나이트 5중량%, 에머리 분말 1중량, 에틸렌-초산비닐-염화비닐 공중합체 0.1∼2중량%, 메틸메타아크릴레이트-스티렌 부타디엔 공중합체 0.1∼2중량%, 아크릴로니트릴-부타디엔-폴리염화비닐 공중합체 0.1∼2중량%, 셀룰로오스 아세테이트 0.1∼2중량%, 감수제 0.01∼0.5중량%, 경화지연제 0.01∼0.5중량%, 소포제 0.01∼0.5중량%, 규불화마그네슘 0.01∼0.5중량%, 티타늄옥사이드 0.01∼0.5중량%, 3-아크릴옥시프로필메틸비스(트리메톡시)실란 0.01∼0.5중량%, 폴리아크릴산알킬 0.01∼0.5중량%, 테트라플루오로에틸렌-트리플루오로니트로소메탄 공중합체 0.01∼0.5중량% 및 알긴산프로필렌글리콜 0.01∼0.5중량% 및 친수성 섬유로서 폴리프로필렌섬유, 폴리에스터섬유, 나일론 섬유 및 매크로 섬유 중에서 선택된 1종 이상을 0.01∼0.5중량% 포함하고,
상기 그래핀 분산액은 산 용액에 그래핀 분말을 넣고 200℃에서 3시간 교반하고 상온으로 냉각시킨 다음, 알칼리 용액으로 pH를 8로 조절한 것으로서, 용액 내 분산된 그래핀의 농도는 15중량%이고,
상기 잔골재는 실리카질 규사 90중량% 및 뮬나이트 10중량%를 포함하며,
KS F 4042(콘크리트 구조물 보수용 폴리머 시멘트 모르타르)에 의하여 압축, 휨 및 부착강도 시험을 수행한 결과 휨강도(MPa)는 10.5 ~ 13.0이고, 압축강도(MPa)는 54.0 ~ 60.0이고, 접착강도(MPa)는 표준조건에서 2.1 ~ 2.4, 온냉반복후 2.1 ~ 2.3이고, 길이변화율(%)은 0.01 ~ 0.03이고, 투수량(g)은 0.12 ~ 0.25이고, 염화물 이온 침투저항성(coulombs)은 290 ~ 415이고, 중성화 저항성(mm)은 0.10 ~ 0.18이고; 일본 공업 규격 원안에 준하여 2% 염산, 5% 황산 및 45% 수산화나트륨의 수용액을 시험 용액으로 28일 공시체를 침적하여 내약품성 시험한 결과 중량변화율(%)은 염산에 대하여 -0.6 ~ -0.4, 황산에 대하여 -0.01 ~ 0.1, 수산화나트륨에 대하여 +0.4 ~ +0.9이고; KS F 2456에 규정한 방법에 따라 동결융해저항성 시험의 측정 결과 내구성 지수는 93 ~ 95이고; KFIA-FI-1004에 의하여 암모니아 가스검지관에 따른 탈취성 시험을 수행한 결과 탈취율(%)은 83 ~ 88이고; KS F 4039에 의하여 열전도율 시험을 수행한 결과 열전도율(W/mk)은 10.2 ~ 10.5이고, 전기 전도도 시험을 수행한 결과 전기전도도(S/m)는 11.0 ~ 12.0인 것을 특징으로 하는 콘크리트 구조물 단면 보수·보강용 폴리머 시멘트 모르타르 조성물.
As a polymer cement mortar composition for repairing and reinforcing the cross section of concrete structures,
Including 40% by weight of functional binder, 50% by weight of fine aggregate, 1% by weight of graphene dispersion and 9% by weight of water,
The functional binder is, based on the weight of the functional binder, crude steel Portland cement 31 to 35% by weight, calcium or magnesium sulfoaluminate 20% by weight, calcium chloro aluminate 10% by weight, hollow silica 5% by weight, diatomaceous earth 5% by weight, Gypsum 5% by weight, lithium silicate-potassium silicate mixture 5% by weight, bentonite 5% by weight, emery powder 1% by weight, ethylene-vinyl acetate-vinyl chloride copolymer 0.1-2% by weight, methyl methacrylate-styrene butadiene copolymer 0.1 -2 wt%, acrylonitrile-butadiene-polyvinyl chloride copolymer 0.1-2 wt%, cellulose acetate 0.1-2 wt%, water reducing agent 0.01-0.5 wt%, curing retardant 0.01-0.5 wt%, defoaming agent 0.01-0.5 Wt%, magnesium silicide 0.01 to 0.5 wt%, titanium oxide 0.01 to 0.5 wt%, 3-acryloxypropylmethylbis(trimethoxy)silane 0.01 to 0.5 wt%, alkyl polyacrylate 0.01 to 0.5 wt%, tetrafluoro 0.01 to 0.5% by weight of a ethylene-trifluoronitrosomethane copolymer and 0.01 to 0.5% by weight of propylene glycol alginate, and 0.01 to at least one selected from polypropylene fibers, polyester fibers, nylon fibers and macro fibers as hydrophilic fibers Including 0.5% by weight,
The graphene dispersion is obtained by adding graphene powder to an acid solution, stirring at 200°C for 3 hours, cooling to room temperature, and then adjusting the pH to 8 with an alkaline solution, and the concentration of graphene dispersed in the solution is 15% by weight. ,
The fine aggregate includes 90% by weight of silica silica and 10% by weight of mullite,
As a result of performing compression, bending and adhesion strength tests with KS F 4042 (polymer cement mortar for repairing concrete structures), the flexural strength (MPa) is 10.5 to 13.0, the compressive strength (MPa) is 54.0 to 60.0, and the adhesive strength (MPa) ) Is 2.1 to 2.4 under standard conditions, 2.1 to 2.3 after repeated warming and cooling, length change rate (%) is 0.01 to 0.03, water permeability (g) is 0.12 to 0.25, chloride ion penetration resistance (coulombs) is 290 to 415 , The neutralization resistance (mm) is 0.10 to 0.18; According to the original draft of the Japanese Industrial Standard, the test sample was immersed in an aqueous solution of 2% hydrochloric acid, 5% sulfuric acid and 45% sodium hydroxide as a test solution for 28 days and tested for chemical resistance. As a result, the weight change rate (%) was -0.6 to -0.4 for hydrochloric acid. -0.01 to 0.1 for sulfuric acid and +0.4 to +0.9 for sodium hydroxide; As a result of measuring the freeze-thaw resistance test according to the method specified in KS F 2456, the durability index is 93 to 95; As a result of performing a deodorization test according to the ammonia gas detection tube by KFIA-FI-1004, the deodorization rate (%) was 83 to 88; Concrete structure cross-section repair, characterized in that the result of performing the thermal conductivity test according to KS F 4039 and the thermal conductivity (W/mk) is 10.2 to 10.5, and the electrical conductivity (S/m) as a result of conducting the electrical conductivity test is 11.0 to 12.0. · Polymer cement mortar composition for reinforcement.
삭제delete 삭제delete 삭제delete 삭제delete 제1항에 기재된 콘크리트 구조물 단면 보수·보강용 폴리머 시멘트 모르타르 조성물을 이용하는 콘크리트 구조물의 보수·보강 공법으로서,
콘크리트의 레이탄스, 불순물 또는 열화부위를 그라인더, 평삭기, 숏블라스터 또는 핸드 워터젯으로 치핑하여 제거하고 청소하는 단계;
청소된 부위의 수분함수율을 확인한 후에 구체 콘크리트와 상기 콘크리트 구조물 단면 보수·보강용 조성물의 부착성을 개선하고, 유해물질 또는 물의 침투를 방지하기 위한 프라이머 또는 블루밍 처리하는 단계;
상기 프라이머 또는 블루밍 처리된 상부에 상기 콘크리트 구조물 단면 보수·보강용 조성물을 타설한 후 표면 마무리하는 단계;
내마모성, 내오염성, 중성화 저항성, 내염해성, 동결융해 저항성, 자외선 저항성 등의 표층강화 및 내구성을 개선하기 위하여 표면 보호·강화제로 표면을 마감하는 단계; 및
양생하는 단계를
포함하는 것을 특징으로 하는 콘크리트 구조물의 보수·보강 공법.
As a concrete structure repair and reinforcement method using the polymer cement mortar composition for repair and reinforcement of the concrete structure section according to claim 1,
Removing and cleaning the level of concrete, impurities, or deteriorated areas by chipping with a grinder, planing machine, shot blaster or hand water jet;
After checking the moisture content of the cleaned area, performing a primer or blooming treatment to improve the adhesion between the concrete concrete and the composition for repairing and reinforcing the cross section of the concrete structure, and to prevent the penetration of harmful substances or water;
Pouring the composition for repairing and reinforcing the cross-section of the concrete structure on the primer or blooming-treated upper portion and then finishing the surface;
Finishing the surface with a surface protection/reinforcement agent to reinforce the surface layer and improve durability such as abrasion resistance, stain resistance, neutralization resistance, salt decomposition resistance, freeze-thaw resistance, and UV resistance; And
Steps to cure
Concrete structure repair and reinforcement method comprising a.
제6항에 있어서,
상기 프라이머는 스티렌-부타디엔, 폴리초산비닐, 폴리 아크릴 에스테르 및 아크릴계 에멀젼 중에서 선택된 1종 이상을 포함하는 것을 특징으로 하는 콘크리트 구조물의 보수·보강 공법.
The method of claim 6,
The primer is styrene-butadiene, polyvinyl acetate, polyacrylic ester, and the repair and reinforcement method of a concrete structure, characterized in that it contains at least one selected from the acrylic emulsion.
제7항에 있어서,
상기 표면 보호·강화제는 황산바륨 1∼30중량%, 이산화규소 1∼20중량%, 탄화붕소 1∼20중량%, 티타늄옥사이드 1∼20중량%, 메틸아크릴레이트-부틸아크릴레이트-스티렌 공중합체 1∼30중량%, 폴리에스테르폴리올 1~20중량%, 비스페놀A-에피클로로하이드린 중합체 1~15중량% 및 프로필에틸트리메톡시실란 0.1∼10중량%를 포함하는 것을 특징으로 하는 콘크리트 구조물의 보수·보강 공법.
The method of claim 7,
The surface protection/strengthening agent is 1 to 30% by weight of barium sulfate, 1 to 20% by weight of silicon dioxide, 1 to 20% by weight of boron carbide, 1 to 20% by weight of titanium oxide, methyl acrylate-butyl acrylate-styrene copolymer 1 Repair of a concrete structure comprising -30% by weight, 1-20% by weight of polyester polyol, 1-15% by weight of bisphenol A-epichlorohydrin polymer, and 0.1-10% by weight of propylethyltrimethoxysilane · Reinforcement method.
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