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KR102549341B1 - Concrete repair and reinforcement method in which an eco-friendly salt damage prevention mortar composition with excellent waterproofness and chemical resistance is poured on the concrete structure and a layer of neutralizing protective coating material for concrete protection is formed in turn - Google Patents

Concrete repair and reinforcement method in which an eco-friendly salt damage prevention mortar composition with excellent waterproofness and chemical resistance is poured on the concrete structure and a layer of neutralizing protective coating material for concrete protection is formed in turn Download PDF

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KR102549341B1
KR102549341B1 KR1020210169577A KR20210169577A KR102549341B1 KR 102549341 B1 KR102549341 B1 KR 102549341B1 KR 1020210169577 A KR1020210169577 A KR 1020210169577A KR 20210169577 A KR20210169577 A KR 20210169577A KR 102549341 B1 KR102549341 B1 KR 102549341B1
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weight
parts
concrete
mortar composition
molten iron
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KR1020210169577A
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Korean (ko)
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KR20230081951A (en
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김홍식
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김홍식
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • 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
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • C04B18/141—Slags
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/04—Carboxylic acids; Salts, anhydrides or esters thereof
    • C04B24/06—Carboxylic acids; Salts, anhydrides or esters thereof containing hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
    • C04B24/121—Amines, polyamines
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/2641—Polyacrylates; Polymethacrylates
    • 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
    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/24—Macromolecular compounds
    • C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C04B24/281—Polyepoxides
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
    • C04B24/40—Compounds containing silicon, titanium or zirconium or other organo-metallic compounds; Organo-clays; Organo-inorganic complexes
    • C04B24/42—Organo-silicon compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
    • C04B41/522—Multiple coatings, for one of the coatings of which at least one alternative is described
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C—CHEMISTRY; METALLURGY
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    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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    • C08K3/26—Carbonates; Bicarbonates
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    • C08K3/34—Silicon-containing compounds
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    • C08K5/00—Use of organic ingredients
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    • C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
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    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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    • C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
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    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
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Abstract

본 발명은 콘크리트 구조물에 방수성과 내화학성이 우수한 친환경 염해방지 모르타르 조성물을 타설하고 콘크리트 보호용 중성화 보호 도포재의 층을 차례로 형성한 콘크리트 보수,보강공법에 관한 것으로서, 보다 구체적으로 알칼리성인 콘크리트의 pH가 중성화되는 열화현상을 방지할 수 있으며, 방수성과 내화학성이 우수한 친환경 염해방지 모르타르 조성물 및 콘크리트 보호용 도료 조성물을 이용한 콘크리트 보수,보강공법에 관한 것이다.The present invention relates to a concrete repair and reinforcement method in which an eco-friendly anti-salt damage mortar composition having excellent waterproofness and chemical resistance is poured onto a concrete structure and layers of a neutralizing protective coating material for concrete protection are sequentially formed, and more specifically, the pH of the alkaline concrete is neutralized. It relates to a concrete repair and reinforcement method using an eco-friendly anti-salt damage mortar composition and a paint composition for protecting concrete, which can prevent deterioration and have excellent waterproofness and chemical resistance.

Description

콘크리트 구조물에 방수성과 내화학성이 우수한 친환경 염해방지 모르타르 조성물을 타설하고 콘크리트 보호용 중성화 보호 도포재의 층을 차례로 형성한 콘크리트 보수,보강공법{Concrete repair and reinforcement method in which an eco-friendly salt damage prevention mortar composition with excellent waterproofness and chemical resistance is poured on the concrete structure and a layer of neutralizing protective coating material for concrete protection is formed in turn}A concrete repair and reinforcement method in which an eco-friendly salt damage prevention mortar composition with excellent waterproofness and chemical resistance is poured into a concrete structure and layers of neutralized protective coating materials are sequentially formed for concrete protection {Concrete repair and reinforcement method in which an eco-friendly salt damage prevention mortar composition with excellent waterproofness and chemical resistance is poured on the concrete structure and a layer of neutralizing protective coating material for concrete protection is formed in turn}

본 발명은 콘크리트 구조물에 방수성과 내화학성이 우수한 친환경 염해방지 모르타르 조성물을 타설하고 콘크리트 보호용 중성화 보호 도포재의 층을 차례로 형성한 콘크리트 보수,보강공법에 관한 것으로서, 보다 구체적으로 알칼리성인 콘크리트의 pH가 중성화되는 열화현상을 방지할 수 있으며, 방수성과 내화학성이 우수한 친환경 염해방지 모르타르 조성물 및 콘크리트 보호용 도료 조성물을 이용한 콘크리트 보수,보강공법에 관한 것이다.The present invention relates to a concrete repair and reinforcement method in which an eco-friendly anti-salt damage mortar composition having excellent waterproofness and chemical resistance is poured onto a concrete structure and layers of a neutralizing protective coating material for concrete protection are sequentially formed, and more specifically, the pH of the alkaline concrete is neutralized. It relates to a concrete repair and reinforcement method using an eco-friendly anti-salt damage mortar composition and a paint composition for protecting concrete, which can prevent deterioration and have excellent waterproofness and chemical resistance.

용선 슬래그는 철강 폐기물 중 하나로 철강 슬래그로 불려 지기도 한다. 철강 슬래그는 일관 제철 공정을 갖춘 제철소의 제강과정에서 다량 발생되는 부산물 및 폐기물로 발생과정 및 공정에 따라 크게 고로슬래그와 제강슬래그, 용선 슬래그로 구분되어진다.Molten iron slag is one of the steel wastes and is sometimes referred to as steel slag. Steel slag is a by-product and waste generated in large quantities during the steelmaking process of steel mills equipped with an integrated steelmaking process.

우리나라에서 2014년 발생한 고로 슬래그와 제강슬래그는 각각 880만톤과 910만톤 정도 생산되고 있으며, 제강슬래그 중 전기로 슬래그의 발생량은 450만톤, 전로슬래그는 460만톤 정도이다. 각각의 슬래그에 대한 재활용 기술 개발은 이미 상당한 성과를 보이고 있으나 용선 예비처리 과정에서 발생되는 용성파우더는 전량 폐기물로 폐기 되고 있는 실정이며 이는 자원적, 환경적으로 막대한 손실이다.About 8.8 million tons of blast furnace slag and 9.1 million tons of steelmaking slag were produced in Korea in 2014, respectively. The development of recycling technology for each slag has already shown significant results, but the soluble powder generated in the pre-treatment of molten pig iron is completely discarded as waste, which is a huge loss in terms of resources and environment.

따라서, 제철소에서 발생되는 용선 슬래그의 재자원화를 위한 연구가 절실히 요구된다.Therefore, research on the recycling of molten iron slag generated in steel mills is urgently required.

콘크리트 구조물은 공기 중에 노출되면 수화물인 수산화칼슘이 공기 중의 이산화탄소와 반응하여 탄산칼슘을 생성하게 되는데, 이러한 작용으로 알칼리성인 콘크리트의 pH가 중성화되는 열화현상이 발생하며, 이러한 열화현상은 콘크리트의 내부로 진행되어 철근을 부식시키고 철근의 체적 팽창을 야기시켜 콘크리트 내부의 균열이 발생하여 구조물의 내구성이 저하되는 문제점이 있었다.When a concrete structure is exposed to the air, calcium hydroxide, a hydrate, reacts with carbon dioxide in the air to produce calcium carbonate. This action causes a deterioration phenomenon in which the pH of the alkaline concrete is neutralized, and this deterioration progresses to the inside of the concrete. This causes corrosion of the reinforcing bars and causes volume expansion of the reinforcing bars, causing cracks inside the concrete to deteriorate the durability of the structure.

대한민국 등록특허 제10-1975001호Republic of Korea Patent No. 10-1975001 대한민국 등록특허 제10-2058597호Republic of Korea Patent No. 10-2058597 대한민국 등록특허 제10-1367166호Republic of Korea Patent No. 10-1367166 대한민국 등록특허 제10-1512962호Republic of Korea Patent No. 10-1512962

본 발명은 알칼리성인 콘크리트의 pH가 중성화되는 열화현상을 방지할 수 있으며, 강도 등의 내구성을 크게 개선할 수 있으며, 방수성과 내화화성을 제공할 수 있으며, 친환경적인 염해방지가 가능한 용선슬래그를 재활용한 단면복구용 모르타르 조성물 및 콘크리트 보호용 도료 조성물을 이용한 콘크리트 보수공법을 제공하는 것이다.The present invention can prevent deterioration in which the pH of alkaline concrete is neutralized, greatly improve durability such as strength, provide waterproofness and fire resistance, and recycle molten pig iron slag capable of preventing environmentally friendly salt damage. It is to provide a concrete repair method using a mortar composition for cross-section restoration and a paint composition for protecting concrete.

본 발명의 해결하고자 하는 과제는 이상에서 언급된 것들에 한정되지 않으며, 언급되지 아니한 다른 해결과제들은 아래의 기재로부터 당업자에게 명확하게 이해되어 질 수 있을 것이다.The problem to be solved by the present invention is not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

상기 목적을 달성하기 위한 본 발명에 따른 용선슬래그를 재활용한 단면복구용 모르타르 조성물 및 콘크리트 보호용 도료 조성물을 이용한 콘크리트 보수공법은 콘크리트 구조물 표면을 세척하는 단계와; 상기 콘크리트 구조물 표면에 알칼리 회복제를 도포하는 단계와; 상기 알칼리 회복제 표면에 프라이머를 도포하는 단계와; 상기 프라이머 표면에 용선슬래그를 재활용한 단면복구용 모르타르 조성물을 도포하는 단계와; 상기 단면복구용 모르타르 조성물 표면에 콘크리트 보호용 도료 조성물을 도포하는 단계;를 포함하는 것을 특징으로 한다.In order to achieve the above object, a concrete repair method using a mortar composition for cross-section restoration and a paint composition for protecting concrete by recycling molten iron slag according to the present invention includes the steps of washing the surface of a concrete structure; applying an alkali restorer to the surface of the concrete structure; applying a primer to the surface of the alkali recovery agent; applying a mortar composition for cross-section restoration obtained by recycling molten iron slag on the surface of the primer; It is characterized in that it comprises a; step of applying a concrete protective coating composition on the surface of the mortar composition for cross-section restoration.

또한, 본 발명의 알칼리 회복제는 리튬실리케이트 수용액이며, 상기 프라이머는 메틸메타크릴레이트 100중량부와, 페닐트리메톡시실란 10~30중량부와, 폴리비닐부티랄 10~30중량부와, 아크릴산노말부틸에스테르 10~30중량부와, 용매 50~150중량부를 포함하여 이루어지는 것을 특징으로 한다.In addition, the alkali recovery agent of the present invention is an aqueous solution of lithium silicate, and the primer contains 100 parts by weight of methyl methacrylate, 10 to 30 parts by weight of phenyltrimethoxysilane, 10 to 30 parts by weight of polyvinyl butyral, and normal acrylic acid. It is characterized by comprising 10 to 30 parts by weight of butyl ester and 50 to 150 parts by weight of solvent.

또한, 본 발명의 단면복구용 모르타르 조성물은 용선슬래그 100중량부를 기준으로, 시멘트 40~60중량부와, 결합재 20~40중량부와, 반응 촉진제 10~20중량부를 포함하여 이루어지는 것을 특징으로 한다.In addition, the mortar composition for cross-section repair of the present invention is characterized by comprising 40 to 60 parts by weight of cement, 20 to 40 parts by weight of a binder, and 10 to 20 parts by weight of a reaction accelerator based on 100 parts by weight of molten iron slag.

또한, 본 발명의 결합재는 수용성 에폭시 수지 100중량부를 기준으로, 실란커플링제 50~70중량부와, 폴리비닐아세테이트 15~30중량부와, 에틸렌-아크릴산 공중합체 10~20중량부와, 부틸아크릴레이트 10~20중량부와, 벤조일퍼옥사이드 1~5중량부를 포함하여 이루어지되, 상기 실란커플링제는 에탄올과 증류수의 중량비가 1:1인 수용액 100중량부에 메타크릴옥시프로필 트리메톡시실란 30~50중량부와, 글리시독시프로필 트리메톡시실란 20~30중량부와, 아미노프로필트리메톡시실란 20~30중량부와, 아세트산 1~5중량부와, 에틸렌 디아민 1~5중량부를 혼합한 것을 특징으로 한다.In addition, the binder of the present invention is based on 100 parts by weight of the water-soluble epoxy resin, 50 to 70 parts by weight of a silane coupling agent, 15 to 30 parts by weight of polyvinyl acetate, 10 to 20 parts by weight of an ethylene-acrylic acid copolymer, and butyl acryl It is made up of 10 to 20 parts by weight of benzoyl peroxide and 1 to 5 parts by weight of benzoyl peroxide, and the silane coupling agent is 100 parts by weight of an aqueous solution having a weight ratio of ethanol and distilled water of 1: 1 methacryloxypropyl trimethoxysilane 30 -50 parts by weight, 20-30 parts by weight of glycidoxypropyltrimethoxysilane, 20-30 parts by weight of aminopropyltrimethoxysilane, 1-5 parts by weight of acetic acid, and 1-5 parts by weight of ethylene diamine are mixed characterized by one.

또한, 본 발명의 반응 촉진제는 실리카퓸, 칼슘 알루미네이트, 설퍼알루미네이트, 아세트산, 규산칼륨 수용액을 포함하여 이루어지는 것을 특징으로 한다.In addition, the reaction accelerator of the present invention is characterized by comprising silica fume, calcium aluminate, sulfur aluminate, acetic acid, and potassium silicate aqueous solution.

또한, 본 발명의 콘크리트 보호용 도료 조성물은 아크릴 에멀젼 100중량부와; 상기 아크릴 에멀젼 100중량부를 기준으로, 마그네슘 규산염 15~30중량부와, 표면 개질된 금속산화물 10~30중량부와, 이산화티타늄 10~30중량부와, 탄산칼슘 10~30중량부와, 프로필렌 글로콜 5~15중량부와, 메틸메타크릴레이트 5~15중량부와, 아민 화합물 1~3중량부와, 인산소다 0.1~0.5중량부를 포함하는 것을 특징으로 한다.In addition, the paint composition for protecting concrete of the present invention includes 100 parts by weight of an acrylic emulsion; Based on 100 parts by weight of the acrylic emulsion, 15 to 30 parts by weight of magnesium silicate, 10 to 30 parts by weight of a surface-modified metal oxide, 10 to 30 parts by weight of titanium dioxide, 10 to 30 parts by weight of calcium carbonate, and propylene glow It is characterized by comprising 5 to 15 parts by weight of col, 5 to 15 parts by weight of methyl methacrylate, 1 to 3 parts by weight of an amine compound, and 0.1 to 0.5 parts by weight of sodium phosphate.

본 발명에 따른 용선슬래그를 재활용한 단면복구용 모르타르 조성물 및 콘크리트 보호용 도료 조성물을 이용한 콘크리트 보수공법에 따르면, 알칼리성인 콘크리트의 pH가 중성화되는 열화현상을 방지할 수 있으며, 강도 등의 내구성을 크게 개선할 수 있으며, 방수성과 내화화성을 제공할 수 있으며, 친환경적인 염해방지가 가능한 효과가 있다.According to the concrete repair method using the mortar composition for cross-section repair and the paint composition for concrete protection, which are recycled from molten iron slag according to the present invention, it is possible to prevent deterioration in which the pH of alkaline concrete is neutralized, and to greatly improve durability such as strength. It can provide waterproofness and fire resistance, and has an effect that can prevent environmentally friendly salt damage.

본 발명의 효과는 이상에서 언급된 것들에 한정되지 않으며, 언급되지 아니한 다른 해결과제들은 아래의 기재로부터 당업자에게 명확하게 이해되어 질 수 있을 것이다.The effects of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

도 1은 본 발명에 따른 용선슬래그를 재활용한 단면복구용 모르타르 조성물 및 콘크리트 보호용 도료 조성물을 이용한 콘크리트 보수공법의 각 단계를 나타내는 블록도이다.1 is a block diagram showing each step of a concrete repair method using a mortar composition for cross-section repair and a paint composition for protecting concrete by recycling molten iron slag according to the present invention.

이하 본 발명의 바람직한 실시예에 대하여 구체적으로 설명한다.Hereinafter, preferred embodiments of the present invention will be described in detail.

본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명은 생략한다. 또한, 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서 이는 사용자, 운용자의 의도 또는 판례 등에 따라 달라질 수 있다. 그러므로 그 정의는 본 명세서 전반에 걸친 내용을 토대로 내려져야 할 것이다.In describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention of a user or operator or a precedent. Therefore, the definition should be made based on the contents throughout this specification.

도 1은 본 발명에 따른 용선슬래그를 재활용한 단면복구용 모르타르 조성물 및 콘크리트 보호용 도료 조성물을 이용한 콘크리트 보수공법의 각 단계를 나타내는 블록도이다.1 is a block diagram showing each step of a concrete repair method using a mortar composition for cross-section repair and a paint composition for protecting concrete by recycling molten iron slag according to the present invention.

도 1을 참조하면, 본 발명에 따른 본 발명에 따른 용선슬래그를 재활용한 단면복구용 모르타르 조성물 및 콘크리트 보호용 도료 조성물을 이용한 콘크리트 보수공법은 콘크리트 구조물 표면을 세척하는 S1단계와, 상기 콘크리트 구조물 표면에 알칼리 회복제를 도포하는 S2단계와, 상기 알칼리 회복제 표면에 프라이머를 도포하는 S3단계와, 상기 프라이머 표면에 용선슬래그를 재활용한 단면복구용 모르타르 조성물을 도포하는 S4단계와, 상기 단면복구용 모르타르 조성물 표면에 콘크리트 보호용 도료 조성물을 도포하는 단계를 포함하는 것을 예시할 수 있다.Referring to FIG. 1, the concrete repair method using the mortar composition for cross-section recovery and the paint composition for protecting concrete by recycling the molten iron slag according to the present invention according to the present invention includes step S1 of washing the surface of the concrete structure, and A step S2 of applying an alkali restorer, a step S3 of applying a primer to the surface of the alkali restorer, a step S4 of applying a mortar composition for cross-section restoration made by recycling molten iron slag on the surface of the primer, and a step S4 of applying a mortar composition for cross-section restoration to the surface of the primer. It can be exemplified by including the step of applying a paint composition for concrete protection.

본 발명의 S1단계에서 콘크리트 구조물 표면을 세척한 다음에는 S2단계에서는 콘크리트 구조물 표면에 알칼리 회복제를 도포하게 되는데, 알칼리 회복제는 중성화된 콘크리트를 재알칼리화하고, 생성된 수화물이 공극을 채워줌으로서 콘크리트 강도를 향상시키는 역할을 하는 것으로서, 리튬실리케이트 수용액((주)에스켐텍의 Lithium Silicate - L 제품)인 것을 예시할 수 있으나, 이에 한정되는 것은 아니며, 규산, 리튬, 아질산을 주성분으로 하는 다른 알칼리 회복제를 사용할 수 있음은 물론이다.After cleaning the surface of the concrete structure in step S1 of the present invention, an alkali recovery agent is applied to the surface of the concrete structure in step S2. As a role of improving the, it can be exemplified as a lithium silicate aqueous solution (Lithium Silicate - L product of SK Chemtech Co., Ltd.), but is not limited thereto, and other alkali recovery agents containing silicic acid, lithium, and nitrous acid as main components can be exemplified. Of course it can be used.

본 발명 S3단계의 프라이머는 콘크리트 구조물 표면과 단면복구용 모르타르 조성물과의 접착력을 극대화하도록 구성된 것으로서, 보다 구체적으로는 메틸메타크릴레이트 100중량부와, 페닐트리메톡시실란 10~30중량부와, 폴리비닐부티랄 10~30중량부와, 아크릴산노말부틸에스테르 10~30중량부와, 용매 50~150중량부를 포함하여 이루어지는 것이 바람직하다.The primer of step S3 of the present invention is configured to maximize the adhesion between the surface of the concrete structure and the mortar composition for cross-section restoration, more specifically, 100 parts by weight of methyl methacrylate, 10 to 30 parts by weight of phenyltrimethoxysilane, It is preferably composed of 10 to 30 parts by weight of polyvinyl butyral, 10 to 30 parts by weight of acrylic acid normal butyl ester, and 50 to 150 parts by weight of a solvent.

여기서 용매는 물, 이소프로필알코올, 노말부틸알코올, 부틸카비톨, 부틸셀로솔브, 프로필렌글리콜모노에틸에테르, 프로필렌글리콜모노에틸아세테이트 중에서 적어도 하나가 선택되는 것을 예시할 수 있으나, 이에 한정되는 것은 아니다.Here, the solvent may be at least one selected from water, isopropyl alcohol, normal butyl alcohol, butyl carbitol, butyl cellosolve, propylene glycol monoethyl ether, and propylene glycol monoethyl acetate, but is not limited thereto. .

본 발명 S4단계의 단면복구용 모르타르 조성물은 용선슬래그를 주성분으로 하여 재활용하는 것을 특징으로 하는 것인데, 용선슬래그는 아래 표 1에 나타난 바와 같이 유해 중금속의 함유량이 타 물질에 비해 매우 적으나, Fe 이온을 많이 함유하고 있고, 수화반응에 따른 경화 후 강도가 매우 낮아 반응성이 낮다는 문제가 있다.The mortar composition for cross-section repair in step S4 of the present invention is characterized by recycling molten iron slag as a main component. As shown in Table 1 below, the molten iron slag has a very small content of harmful heavy metals compared to other materials, but Fe ions It contains a lot of , and there is a problem that the reactivity is low because the strength after hardening according to the hydration reaction is very low.

구분division SiO2 SiO 2 Al2O3 Al 2 O 3 Fe2O3 Fe 2 O 3 CaOCaO MgOMgO SO3 SO 3 TiO2 TiO 2 고로슬래그blast furnace slag 35.0835.08 10.8710.87 0.520.52 43.1043.10 3.603.60 2.362.36 1.201.20 용선슬래그Molten iron slag 11.3611.36 16.4916.49 22.0622.06 34.3034.30 5.575.57 0.150.15 0.170.17

한편 용선슬래그는 시멘트와 같은 강 알칼리성 물질에 의해 활성화된다. 용선슬래그는 반응성이 매우 낮으나, 아래 표 2에 나타난 바와 같이, 용선슬래그 활성 시험SO3 함량이 높아 시멘트와 혼합 사용시 시간이 지남에 따라 고로슬래그에 비해 장기적인 내구성이 저하될 수 있다. 용선슬래그 성분중 CaO는 초기 흡수량이 매우 높고 발열에 따른 팽창위험이 있다. 용선슬래그의 활성을 위한 시멘트의 과다사용은 환경에 매우 위해하므로 슬래그파우더, 플라이애쉬 및 알칼리 활성제에 의한 용선슬래그의 활성이 가능하다. 그러나, 활성물질의 과다사용에 따른 제조원가 상승이 동반되어 가격경쟁력을 상실할 수 있다.On the other hand, molten iron slag is activated by strongly alkaline substances such as cement. Although molten iron slag has a very low reactivity, as shown in Table 2 below, the high content of molten iron slag activity test SO 3 may reduce long-term durability compared to blast furnace slag over time when mixed with cement. Among the components of molten pig iron slag, CaO has a very high initial absorption and there is a risk of expansion due to heat generation. Excessive use of cement for activation of molten iron slag is very harmful to the environment, so molten iron slag can be activated by slag powder, fly ash and alkali activator. However, price competitiveness may be lost due to an increase in manufacturing cost due to excessive use of active materials.

구 분division 비표면적(Blaine)
(㎠/g)Specific surface area (Blaine)
(cm2/g) Comp.Strength (Mpa)Comp.Strength (Mpa) 3일3 days 7일7 days 28일28 days 고로슬래그blast furnace slag 4,4804,480 8.88.8 17.517.5 43.143.1 용선슬래그Molten iron slag 4,6504,650 11.411.4 18.618.6 38.138.1

이러한 용선슬래그 사용에 따른 내구성 저하 문제를 해결하기 위해 본 발명의 단면복구용 모르타르 조성물은 용선슬래그 100중량부를 기준으로, 시멘트 40~60중량부와, 결합재 20~40중량부와, 반응 촉진제 10~20중량부를 포함하여 구성되는 것이 바람직하다.In order to solve the problem of durability deterioration due to the use of molten iron slag, the mortar composition for cross-section restoration of the present invention contains 40 to 60 parts by weight of cement, 20 to 40 parts by weight of binder, and 10 to 40 parts by weight of reaction accelerator based on 100 parts by weight of molten iron slag. It is preferably configured to include 20 parts by weight.

상기 결합재는 결합재는 수용성 에폭시 수지 100중량부를 기준으로, 실란커플링제 50~70중량부와, 폴리비닐아세테이트 15~30중량부와, 에틸렌-아크릴산 공중합체 10~20중량부와, 부틸아크릴레이트 10~20중량부와, 벤조일퍼옥사이드 1~5중량부를 포함하여 이루어지는 것이 바람직하다.The binder is based on 100 parts by weight of the water-soluble epoxy resin, 50 to 70 parts by weight of a silane coupling agent, 15 to 30 parts by weight of polyvinyl acetate, 10 to 20 parts by weight of an ethylene-acrylic acid copolymer, and 10 butyl acrylate It is preferably composed of ~ 20 parts by weight and 1 to 5 parts by weight of benzoyl peroxide.

여기서, 실란커플링제는 에탄올과 증류수의 중량비가 1:1인 수용액 100중량부에 메타크릴옥시프로필 트리메톡시실란 30~50중량부와, 글리시독시프로필 트리메톡시실란 20~30중량부와, 아미노프로필트리메톡시실란 20~30중량부와, 아세트산 1~5중량부와, 에틸렌 디아민 1~5중량부를 혼합한 것을 예시할 수 있다.Here, the silane coupling agent is 30 to 50 parts by weight of methacryloxypropyl trimethoxysilane and 20 to 30 parts by weight of glycidoxypropyl trimethoxysilane in 100 parts by weight of an aqueous solution having a weight ratio of ethanol and distilled water of 1:1. , A mixture of 20 to 30 parts by weight of aminopropyltrimethoxysilane, 1 to 5 parts by weight of acetic acid, and 1 to 5 parts by weight of ethylenediamine can be exemplified.

상기 반응 촉진제는 수화반응 자극제와, 수화반응 개선제와, 용선슬래그 표면 자극제와, 알칼리 반응 촉진제로 구성되는 것이 바람직하다.The reaction accelerator is preferably composed of a hydration reaction stimulator, a hydration reaction improver, a molten pig iron slag surface stimulator, and an alkali reaction promoter.

그리고 상기 반응 촉진제는 상기 수화반응 자극제인 칼슘 알루미네이트 및 칼슘 설퍼알루미네이트와, 수화반응 개선제인 실리카퓸과, 상기 용선슬래그 표면 자극제인 아세트산과, 알칼리 반응 촉진제인 규산칼륨 수용액으로 구성되는 것을 예시할 수 있다.And the reaction accelerator is composed of calcium aluminate and calcium sulfur aluminate as hydration reaction stimulants, silica fume as hydration reaction improver, acetic acid as molten pig iron slag surface stimulation agent, and potassium silicate aqueous solution as alkali reaction promoter. can

이 중에서 수화반응 개선제는 일반 고로슬래그 미분말과 비교시 SiO2 함량이 적어 수화반응성이 낮아지는 문제를 해결하기 위한 것으로서, 실리카퓸은 주요 구성성분이 SiO2로 이루어져 있으며 고분말로 수화물의 미세공극을 채워주며, 물성저하를 개선하게 된다.Among them , the hydration reaction improver is to solve the problem of low hydration reactivity due to the low SiO 2 content compared to the general blast furnace slag fine powder. and improve the deterioration of physical properties.

이러한 실리카퓸의 물리/화학적 특성은 아래 표 3과 같다.Physical/chemical properties of these silica fume are shown in Table 3 below.

비중importance 분말도(㎡/g)Fineness (㎡/g) PHPH 평균입경average particle diameter SiO2 SiO 2 MgOMgO SO3 SO 3 2.22.2 15 ~ 2515 to 25 2.0 ~ 4.02.0 to 4.0 0.150.15 90% 이상over 90 1.0% 이하1.0% or less 3.0% 이하3.0% or less

제철산업의 용선 슬래그 부산물은 일부 수화반응(Hydration)을 갖는 것으로 알려져 있으나 그 효과가 크지 않아 자체적으로는 산업용 자재로 사용이 어려웠고, 따라서 구성 성분에 따른 자극성(활성)물질의 개발이 필요한데, 기존에 알려진 활성(자극성) 물질은 가성소다(Sodium hydroxide, NaOH), 규산나트륨(Sodium silicate, Na2SiO3) 등이 일반적으로 알려져 있으나 상용성과 경제성 면에서 사용하기에는 어렵기 때문에 본 발명에서는 환경 친화적이면서 경제성을 갖는 수화반응 자극제와, 용선슬래그 표면 자극제와, 알칼리 반응 촉진제를 사용한다.It is known that by-products of molten iron slag in the steel industry have some hydration, but the effect is not great, so it is difficult to use it as an industrial material on its own. Known active (irritant) substances are caustic soda (Sodium hydroxide, NaOH), sodium silicate (Na 2 SiO 3 ), etc. are generally known, but they are difficult to use in terms of compatibility and economy, so the present invention is environmentally friendly and economical. A hydration reaction stimulant having , a molten pig iron slag surface stimulator, and an alkali reaction accelerator are used.

상기 수화반응 자극제는 용선슬래그의 활성화 시험을 통하여 용선슬래그의 사용량이 증가할수록 수화반응성의 저하로 발생되는 강도저하 및 에트린자이트 활성의 부족으로 인한 문제를 극복하기 위한 것으로서 Calcium aluminates 미분과 Calcium sulfoaluminate를 혼용하여 사용으로 초기 수화 반응성을 개선하는 역할을 한다.The hydration reaction stimulant is to overcome the problems caused by the decrease in strength and the lack of ettringite activity caused by the decrease in hydration reactivity as the amount of molten iron slag increases through the activation test of molten iron slag, Calcium aluminates fine powder and Calcium sulfoaluminate It serves to improve the initial hydration reactivity by using in combination.

상기 용선슬래그 표면 자극제는 용선슬래그의 표면을 감싸고 반응성을 저해하는 유리막 구조의 활성화를 위한 것으로서 아세트산(Acetic acid)을 예시할 수 있다.The molten iron slag surface stimulant is for activating a glass film structure that covers the surface of molten iron slag and inhibits its reactivity, and may be exemplified by acetic acid.

용선슬래그의 반응성 개선을 위하여 5,000 Blaine , 6,000 Blaien의 고미분으로 선별된 용선슬래그를 비교 검토하여 유동화토 수화물 조직의 치밀함을 증가시키고 시멘트의 사용량을 최소로 하여 시멘트에서 발생되는 중금속등의 발생을 억제하는 친환경적 기능성을 부여하고자 한다.In order to improve the reactivity of molten iron slag, molten iron slag selected with high fines of 5,000 Blaine and 6,000 Blaien was compared and reviewed to increase the density of the fluidized soil hydrate structure and minimize the amount of cement used to reduce the generation of heavy metals generated from cement. It is intended to impart eco-friendly functionality that suppresses

그리고 알칼리 반응 촉진제는 용선슬래그의 수화 반응을 촉진하기 위한 것으로서, 규산칼륨 수용액인 것을 예시할 수 있으며, 본 발명에서는 (주)영일화성의 액상규산칼륨(PS-C100)(SiO2/K2O의 몰비=3.2~3.5)를 사용하였다.In addition, the alkali reaction accelerator is for accelerating the hydration reaction of molten iron slag, and may be an aqueous solution of potassium silicate, and in the present invention, liquid potassium silicate (PS-C100) (SiO 2 /K 2 O The molar ratio of = 3.2 to 3.5) was used.

본 발명에서는 상기한 구성의 단면복구용 모르타르 조성물의 성능을 알아보기 아래와 같은 실험을 하였다.In the present invention, the following experiment was conducted to find out the performance of the mortar composition for cross-section recovery of the above configuration.

1. 실험재료1. Experiment materials

본 발명의 단면복구용 모르타르 조성물은 용선슬래그 100중량부, 보통 포틀랜드 시멘트 1종 50중량부, 결합재 30중량부, 반응 촉진제 15중량부로 구성된다.The mortar composition for cross-section repair of the present invention is composed of 100 parts by weight of molten iron slag, 50 parts by weight of one type of ordinary Portland cement, 30 parts by weight of a binder, and 15 parts by weight of a reaction accelerator.

여기서, 결합재는 수용성 에폭시 수지(국도화학, KEM-128-70) 100중량부를 기준으로, 실란커플링제 60중량부와, 폴리비닐아세테이트 20중량부와, 에틸렌-아크릴산 공중합체 20중량부와, 부틸아크릴레이트 10중량부와, 벤조일퍼옥사이드 3중량부로 이루어진다.Here, the binder is based on 100 parts by weight of a water-soluble epoxy resin (Kukdo Chemical, KEM-128-70), 60 parts by weight of a silane coupling agent, 20 parts by weight of polyvinyl acetate, 20 parts by weight of an ethylene-acrylic acid copolymer, and butyl It consists of 10 parts by weight of acrylate and 3 parts by weight of benzoyl peroxide.

여기서, 실란커플링제는 에탄올과 증류수의 중량비가 1:1인 수용액 100중량부에 메타크릴옥시프로필 트리메톡시실란 30중량부와, 글리시독시프로필 트리메톡시실란 30중량부와, 아미노프로필트리메톡시실란 20중량부와, 아세트산 5중량부와, 에틸렌 디아민 2중량부를 혼합한 것을 사용하였다.Here, the silane coupling agent is 30 parts by weight of methacryloxypropyl trimethoxysilane, 30 parts by weight of glycidoxypropyl trimethoxysilane, and aminopropyltri A mixture of 20 parts by weight of methoxysilane, 5 parts by weight of acetic acid, and 2 parts by weight of ethylenediamine was used.

그리고, 반응 촉진제는 실리카퓸, 칼슘 알루미네이트, 설퍼알루미네이트, 아세트산, 액상규산칼륨((주)영일화성, PS-C100)을 각각 1 : 0.2 : 0.3 : 1.5 : 0.7의 중량비로 이루어진다.In addition, the reaction accelerator consists of silica fume, calcium aluminate, sulfur aluminate, acetic acid, and liquid potassium silicate (PS-C100, Youngil Hwaseong Co., Ltd.) in a weight ratio of 1: 0.2: 0.3: 1.5: 0.7, respectively.

2. 실험결과2. Experimental results

본 발명의 단면복구용 모르타르 조성물을 사용하여 보수한 실험결과는 아래 표 4와 같다.The experimental results of repair using the mortar composition for cross-section repair of the present invention are shown in Table 4 below.

평가항목
(주요성능 spec)evaluation item
(Main performance spec) 단위unit 세계최고수준
(보유국/보유기관)world's highest level
(Owning country/Owning institution) 연구 전
국내수준before study
domestic level 실험 결과Experiment result 평가방법Assessment Methods 1. 유동성1. Liquidity mmmm 500이상
(일본/Denka)over 500
(Japan/Denka) 450450 550550 KS F 2402KS F 2402 2. 투수계수2. Permeability coefficient cm/seccm/s -
(일본/Denka)-
(Japan/Denka) -- 1-6이하1 -6 or less KS F 2322KS F 2322 3. 3일강도3. 3-day robbery MPaMPa 0.2
(일본/Denka)0.2
(Japan/Denka) 0.10.1 0.290.29 KS F 2405KS F 2405 4. 7일강도4. 7-day strength MPaMPa 0.5
(일본/Denka)0.5
(Japan/Denka) 0.30.3 0.80.8 KS F 2405KS F 2405 5. 28일강도5. 28 days robbery MPaMPa 0.8
(일본/Denka)0.8
(Japan/Denka) 0.60.6 1.21.2 KS F 2405KS F 2405 6. 블리딩6. Bleeding %% 1.5
(일본/Denka)1.5
(Japan/Denka) 1.51.5 0.80.8 KS F 2414KS F 2414 7. C6+ 발생량7. C 6+ Generation /L/L 1.5
(일본/Denka)1.5
(Japan/Denka) 1.51.5 0.9 이하0.9 or less 폐기물공정
시험기준waste process
test standard 8. Pb 발생량8.Pb generation /L/L 5.0
(일본/Denka)5.0
(Japan/Denka) -- 2.0 이하2.0 or lower 폐기물공정
시험기준waste process
test standard 9. Cd 발생량9. Cd generation /L/L 0.5
(일본/Denka)0.5
(Japan/Denka) -- 0.2 이하0.2 or less 폐기물공정
시험기준waste process
test standard 10. Hg 발생량10.Hg generation /L/L 0.01
(일본/Denka)0.01
(Japan/Denka) -- 0.004 이하Less than 0.004 폐기물공정
시험기준waste process
test standard 11. 현장주입성능평가11. On-site injection performance evaluation mm -- -- 1.0 이상1.0 or higher 자체현장평가On-site evaluation 성능지표 1~11의 경우 한국건설생활환경시험연구원의 시험성적서를 기초한 것임 In the case of performance indicators 1 to 11, it is based on the test report of the Korea Conformity Laboratories

위 표 4를 보면, 본 발명의 단면복구용 모르타르 조성물을 사용하여 보수작업을 한 결과, 강도, 블리딩 등 물성이 기존보다 현저히 개선되었으며, 용출되는 중금속 량도 현저히 감소한다는 것을 확인할 수 있었다.Looking at Table 4 above, as a result of the repair work using the mortar composition for cross-section repair of the present invention, it was confirmed that physical properties such as strength and bleeding were significantly improved, and the amount of heavy metals eluted was significantly reduced.

본 발명에 따른 단면복구용 모르타르 조성물을 사용함으로써 압축강도가 저하되어 고로슬래그에 비해 사용이 거의 되지 않던 용선슬래그를 단면보수 등에 보다 적극적으로 활용될 수 있을 것으로 기대한다.By using the mortar composition for cross-section repair according to the present invention, it is expected that molten iron slag, which has been rarely used compared to blast furnace slag due to its reduced compressive strength, can be more actively utilized for cross-section repair.

본 발명의 콘크리트 보호용 도료 조성물은 콘크리트의 중성화 및 염해를 방지하여 수명을 연장시키는 역할을 하는 것으로서, 아크릴 에멀젼 100중량부와, 상기 아크릴 에멀젼 100중량부를 기준으로, 마그네슘 규산염 15~30중량부와, 표면 개질된 금속산화물 10~30중량부와, 이산화티타늄 10~30중량부와, 탄산칼슘 10~30중량부와, 프로필렌 글로콜 5~15중량부와, 메틸메타크릴레이트 5~15중량부와, 아민 화합물 1~3중량부와, 인산소다 0.1~0.5중량부를 포함하는 것을 예시할 수 있다. 다만, 이러한 구성의 콘크리트 보호용 도료 조성물의 세부 구성과, 성능에 대해서는 대한민국 등록특허 제10-2058597호의 실시예 1에서 이미 상세하게 설명하였으므로, 그 자세한 설명은 생략한다. The concrete protective coating composition of the present invention serves to prolong the life by preventing neutralization and salt damage of concrete, and contains 100 parts by weight of acrylic emulsion and 15 to 30 parts by weight of magnesium silicate based on 100 parts by weight of the acrylic emulsion, 10 to 30 parts by weight of the surface-modified metal oxide, 10 to 30 parts by weight of titanium dioxide, 10 to 30 parts by weight of calcium carbonate, 5 to 15 parts by weight of propylene glycol, 5 to 15 parts by weight of methyl methacrylate, , 1 to 3 parts by weight of an amine compound, and 0.1 to 0.5 parts by weight of sodium phosphate can be exemplified. However, since the detailed configuration and performance of the paint composition for protecting concrete having this configuration have already been described in detail in Example 1 of Korean Patent Registration No. 10-2058597, the detailed description thereof will be omitted.

이상에서 설명된 본 발명은 예시적인 것에 불과하며, 본 발명이 속한 기술분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 잘 알 수 있을 것이다. 그러므로 본 발명은 상기의 상세한 설명에서 언급되는 형태로만 한정되는 것은 아님을 잘 이해할 수 있을 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의해 정해져야 할 것이다. 또한, 본 발명은 첨부된 청구범위에 의해 정의되는 본 발명의 정신과 그 범위 내에 있는 모든 변형물과 균등물 및 대체물을 포함하는 것으로 이해되어야 한다.The present invention described above is only exemplary, and those skilled in the art will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, it will be well understood that the present invention is not limited to the forms mentioned in the detailed description above. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. It is also to be understood that the present invention includes all modifications, equivalents and alternatives within the spirit and scope of the present invention as defined by the appended claims.

Claims (6)

콘크리트 구조물 표면을 세척하는 단계와;
상기 콘크리트 구조물 표면에 알칼리 회복제를 도포하는 단계와;
상기 알칼리 회복제 표면에 프라이머를 도포하는 단계와;
상기 프라이머 표면에 용선슬래그를 재활용한 단면복구용 모르타르 조성물을 도포하는 단계와;
상기 단면복구용 모르타르 조성물 표면에 콘크리트 보호용 도료 조성물을 도포하는 단계;를 포함하되,
상기 단면복구용 모르타르 조성물은 용선슬래그 100중량부를 기준으로, 시멘트 40~60중량부와, 결합재 20~40중량부와, 반응 촉진제 10~20중량부를 포함하여 이루어지고,
상기 결합재는 수용성 에폭시 수지 100중량부를 기준으로, 실란커플링제 50~70중량부와, 폴리비닐아세테이트 15~30중량부와, 에틸렌-아크릴산 공중합체 10~20중량부와, 부틸아크릴레이트 10~20중량부와, 벤조일퍼옥사이드 1~5중량부를 포함하여 이루어지며,
상기 실란커플링제는 에탄올과 증류수의 중량비가 1:1인 수용액 100중량부에 메타크릴옥시프로필 트리메톡시실란 30~50중량부와, 글리시독시프로필 트리메톡시실란 20~30중량부와, 아미노프로필트리메톡시실란 20~30중량부와, 아세트산 1~5중량부와, 에틸렌 디아민 1~5중량부를 혼합한 것을 특징으로 하는 용선슬래그를 재활용한 단면복구용 모르타르 조성물 및 콘크리트 보호용 도료 조성물을 이용한 콘크리트 보수공법.
cleaning the surface of the concrete structure;
applying an alkali restorer to the surface of the concrete structure;
applying a primer to the surface of the alkali recovery agent;
applying a mortar composition for cross-section restoration obtained by recycling molten iron slag on the surface of the primer;
Applying a paint composition for concrete protection to the surface of the mortar composition for cross-section restoration; Including,
The mortar composition for cross-section repair includes 40 to 60 parts by weight of cement, 20 to 40 parts by weight of a binder, and 10 to 20 parts by weight of a reaction accelerator based on 100 parts by weight of molten iron slag,
The binder is based on 100 parts by weight of the water-soluble epoxy resin, 50 to 70 parts by weight of a silane coupling agent, 15 to 30 parts by weight of polyvinyl acetate, 10 to 20 parts by weight of an ethylene-acrylic acid copolymer, and 10 to 20 parts by weight of butyl acrylate parts by weight and 1 to 5 parts by weight of benzoyl peroxide,
The silane coupling agent is 30 to 50 parts by weight of methacryloxypropyl trimethoxysilane and 20 to 30 parts by weight of glycidoxypropyl trimethoxysilane in 100 parts by weight of an aqueous solution having a weight ratio of ethanol and distilled water of 1: 1, A mortar composition for cross-section restoration and a paint composition for concrete protection, which are recycled from molten iron slag, characterized by mixing 20 to 30 parts by weight of aminopropyltrimethoxysilane, 1 to 5 parts by weight of acetic acid, and 1 to 5 parts by weight of ethylene diamine. Concrete repair method used.
 제1항에 있어서,
상기 알칼리 회복제는 리튬실리케이트 수용액이며,
상기 프라이머는 메틸메타크릴레이트 100중량부와, 페닐트리메톡시실란 10~30중량부와, 폴리비닐부티랄 10~30중량부와, 아크릴산노말부틸에스테르 10~30중량부와, 용매 50~150중량부를 포함하여 이루어지는 것을 특징으로 하는 용선슬래그를 재활용한 단면복구용 모르타르 조성물 및 콘크리트 보호용 도료 조성물을 이용한 콘크리트 보수공법.
According to claim 1,
The alkali recovery agent is an aqueous solution of lithium silicate,
The primer includes 100 parts by weight of methyl methacrylate, 10 to 30 parts by weight of phenyltrimethoxysilane, 10 to 30 parts by weight of polyvinyl butyral, 10 to 30 parts by weight of acrylic acid normal butyl ester, and 50 to 150 parts by weight of a solvent A concrete repair method using a mortar composition for cross-section recovery and a concrete protective paint composition recycled from molten iron slag, characterized in that it comprises parts by weight.
 삭제delete 삭제delete 제1항에 있어서,
상기 반응 촉진제는 실리카퓸, 칼슘 알루미네이트, 설퍼알루미네이트, 아세트산, 규산칼륨 수용액을 포함하여 이루어지는 것을 특징으로 하는 용선슬래그를 재활용한 단면복구용 모르타르 조성물 및 콘크리트 보호용 도료 조성물을 이용한 콘크리트 보수공법.
According to claim 1,
The reaction accelerator comprises silica fume, calcium aluminate, sulfur aluminate, acetic acid, and a potassium silicate aqueous solution.
 제1항에 있어서,
상기 콘크리트 보호용 도료 조성물은 아크릴 에멀젼 100중량부와;
상기 아크릴 에멀젼 100중량부를 기준으로, 마그네슘 규산염 15~30중량부와, 표면 개질된 금속산화물 10~30중량부와, 이산화티타늄 10~30중량부와, 탄산칼슘 10~30중량부와, 프로필렌 글로콜 5~15중량부와, 메틸메타크릴레이트 5~15중량부와, 아민 화합물 1~3중량부와, 인산소다 0.1~0.5중량부를 포함하는 것을 특징으로 하는 용선슬래그를 재활용한 단면복구용 모르타르 조성물 및 콘크리트 보호용 도료 조성물을 이용한 콘크리트 보수공법.
According to claim 1,
The paint composition for protecting concrete includes 100 parts by weight of an acrylic emulsion;
Based on 100 parts by weight of the acrylic emulsion, 15 to 30 parts by weight of magnesium silicate, 10 to 30 parts by weight of a surface-modified metal oxide, 10 to 30 parts by weight of titanium dioxide, 10 to 30 parts by weight of calcium carbonate, and propylene glow Mortar for cross-section recovery recycled from molten iron slag, characterized in that it contains 5 to 15 parts by weight of col, 5 to 15 parts by weight of methyl methacrylate, 1 to 3 parts by weight of an amine compound, and 0.1 to 0.5 parts by weight of sodium phosphate Concrete repair method using composition and paint composition for concrete protection.
KR1020210169577A 2021-11-30 2021-11-30 Concrete repair and reinforcement method in which an eco-friendly salt damage prevention mortar composition with excellent waterproofness and chemical resistance is poured on the concrete structure and a layer of neutralizing protective coating material for concrete protection is formed in turn KR102549341B1 (en)

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