KR102029168B1 - Repairing mortar for concrete structure neutralization deterioration preventing and concrete structure neutralization deterioration preventing method using the same - Google Patents
Repairing mortar for concrete structure neutralization deterioration preventing and concrete structure neutralization deterioration preventing method using the same Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/26—Carbonates
- C04B14/28—Carbonates of calcium
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- 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
- C04B24/12—Nitrogen containing compounds organic derivatives of hydrazine
- C04B24/121—Amines, polyamines
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B24/2623—Polyvinylalcohols; Polyvinylacetates
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0032—Controlling the process of mixing, e.g. adding ingredients in a quantity depending on a measured or desired value
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/32—Aluminous cements
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/34—Flow improvers
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/44—Thickening, gelling or viscosity increasing agents
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/22—Carbonation resistance
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/72—Repairing or restoring existing buildings or building materials
- C04B2111/723—Repairing reinforced concrete
Abstract
Description
본 발명은 콘크리트 구조물 중성화방지용 보수몰탈 및 이를 이용한 콘크리트 구조물 중성화방지 보수공법에 관한 것으로, 보다 상세하게는 일반적으로 사용되는 콘크리트 단면복구 및 보수몰탈에 중성화방지성분을 첨가한 콘크리트 구조물 중성화방지용 보수몰탈과 폴리머 접착제를 이용한 콘크리트 구조물 중성화방지 보수공법에 관한 것이다.The present invention relates to a repair mortar for preventing the neutralization of concrete structures and a repair method for preventing the neutralization of concrete structures using the same. More specifically, the repair mortar for preventing the neutralization of concrete structures to which the neutralization prevention component is added to the concrete cross section recovery and the repair mortar used in general The present invention relates to a repair method for preventing neutralization of concrete structures using polymer adhesives.
일반적으로, 철근 콘크리트 구조물의 손상은 주로, 1) 시일이 경과함에 따라 이산화탄소와 수분이 반응하여 철근 콘크리트 내 철근의 부식을 초래하는 중성화(carbonation), 2) 해풍, 해수, 제설용 염화칼슘의 염기가 철근 콘크리트 구조물 내에 침투하여 콘크리트 내 철근의 부식을 초래하는 염기침투(chloride intrusion), 3) 고알카리성 시멘트와 특정골재가 수분이 있는 상태에서 반응 및 팽창하고, 이를 통해 콘크리트의 균열을 초래하는 알카리-실리카 반응(alkali-silica reaction) 등의 원인들에 의하여 유발된다.In general, the damage of reinforced concrete structures is mainly due to: 1) carbonation, which causes carbon dioxide and moisture to react with the passage of seals, causing corrosion of the steel in reinforced concrete; Chloride intrusion, which penetrates into the reinforced concrete structure, causing corrosion of the steel in the concrete; and 3) alkalis that react with and expand in the presence of moisture in the highly alkaline cement and certain aggregates. It is caused by causes such as the silica reaction (alkali-silica reaction).
상기한 원인들로 인해 철근 콘크리트 구조물은 열화되고 수명이 단축되며, 특히, 최근 급격히 증가한 자동차 배기가스 증가에 따라 이에 포함되어 있는 이산화탄소의 양 또한 현저히 증가시켰으며, 이는 철근 콘크리트의 중성화를 더욱 가속화시키는 원인으로 작용하며, 콘크리트의 중성화는 철근을 보호하고 있던 부동태 피막을 손상시켜 철근의 부식을 야기하고, 이렇게 발생된 철근의 부식은 또한 철근 체적의 팽창을 야기함으로써, 철근 콘크리트의 균열 및 박리를 일으키는 것으로 알려져 있다.Due to the above reasons, reinforced concrete structures deteriorate and shorten their lifespan. In particular, the recent rapid increase in automobile exhaust gas also increases the amount of carbon dioxide contained therein, which accelerates the neutralization of reinforced concrete. The neutralization of concrete damages the passivation film that was protecting the reinforcement, causing corrosion of the reinforcement, which also causes expansion of the reinforcement volume, causing cracking and peeling of the reinforced concrete. It is known.
이에 따라, 최근에는 철근 콘크리트 중성화가 이미 진행된 철근 콘크리트 구조물의 중성화를 방지하고 알카리성을 회복시키기 위한 방법으로, 철근 콘크리트의 표면을 치밀한 마감재료로 코팅하는 방법, 침투형 표면강화제를 도포하는 방법 등이 많이 사용되고 있으며, 철근 콘크리트 구조물의 중성화 피해 발생시, 상기 두 방법과 알카리성 재부여제를 도포하는 방법을 각각 또는 병행하여 처리하는 방법이 시행되고 있다.Accordingly, as a method for preventing neutralization and restoring alkalinity of reinforced concrete structures that have already undergone the neutralization of reinforced concrete, a method of coating the surface of reinforced concrete with a dense finishing material, and applying a penetration type surface strengthening agent, etc. It is widely used, and in the case of neutralization damage of reinforced concrete structures, a method of treating the two methods and the method of applying an alkaline re-imparting agent, respectively or in parallel, has been implemented.
종래, 콘크리트 구조물의 중성화 방지 기술들을 살펴 보면, 한국등록특허 10-0974675(2010년08월02일)에 하이브리드 수용성 에멀젼과 마이크로 몰탈을 20:100 ~ 25:100로 혼합하여 만들어지되, 상기 마이크로 몰탈은, 포틀랜드 시멘트와 마이크로 시멘트를 혼합하여 제1혼합물을 생성하는 단계; 상기 제1혼합물에 CAS(Calcium Aluminium Sulfite), 무수석고를 혼합하여 제2혼합물을 생성하는 단계; 상기 제2혼합물에 규사5호, 규사6호를 혼합하여 제3혼합물을 생성하는 단계; 상기 제3혼합물에 소포제, 티타늄디옥사이드를 혼합하는 단계;로 제조되는 것을 특징으로 하는 콘크리트 열화 및 중성화 방지용 보수보호몰탈을 제조하는 방법이 공지되어 있다.Conventionally, when looking at the anti-neutralization technology of the concrete structure, it is made by mixing the hybrid water-soluble emulsion and micro mortar 20: 100 ~ 25: 100 in Korea Patent Registration 10-0974675 (August 02, 2010), the micro mortar Silver, mixing the portland cement and the micro cement to produce a first mixture; Generating a second mixture by mixing CAS (Calcium Aluminum Sulfite) and anhydrous gypsum to the first mixture; Producing a third mixture by mixing silica sand 5 and silica sand 6 with the second mixture; Mixing the antifoaming agent, titanium dioxide in the third mixture; a method for producing a repair protection mortar for preventing concrete deterioration and neutralization characterized in that it is produced.
또한, 한국등록특허 10-1094755(2011년12월09일)에 보통포틀랜드시멘트 또는 슬라그시멘트 20∼40wt%, 무기계 팽창재 3∼15wt%, 규조토 5∼20wt%, 카올린분말 5∼15wt%, 실리카 분말 20∼35wt%, 니켈크롬분말 2∼8wt%, 폴리머분말 4∼20wt%, 발수재 0.3∼3.0wt%, 고성능 유동화제 0.2∼1.0wt%, 증점제 0.05∼0.8wt%를 포함하되, 상기 니켈크롬분말은 니켈분말과 크롬분말이 1:1의 중량비로 혼합된 것을 특징으로 하는 콘크리트 구조물의 표면보호재 조성물이 공지되어 있다.In addition, in Korea Patent Registration 10-1094755 (December 09, 2011), 20 to 40 wt% of ordinary portland cement or slag cement, 3 to 15 wt% of inorganic expander, 5 to 20 wt% of diatomaceous earth, 5 to 15 wt% of kaolin powder, silica 20 to 35 wt% of powder, 2 to 8 wt% of nickel chromium powder, 4 to 20 wt% of polymer powder, 0.3 to 3.0 wt% of water repellent, 0.2 to 1.0 wt% of high performance fluidizing agent, and 0.05 to 0.8 wt% of thickener. The chromium powder is known to have a surface protective material composition of a concrete structure, characterized in that the nickel powder and chromium powder is mixed in a weight ratio of 1: 1.
또한, 한국공개특허 10-2015-0101708(2015년09월04일)에 실리카졸(silica sol), 수산화칼륨(KOH), 산화철(Fe2O4) 및 아질산염(2% 수용액)을 유효성분으로 함유하는 것을 특징으로 하는, 중성화된 철근 콘크리트 구조물의 알카리 환원제 코팅용 조성물이 공지되어 있다.In addition, Korean Patent Publication No. 10-2015-0101708 (September 04, 2015) containing silica sol (silica sol), potassium hydroxide (KOH), iron oxide (Fe2O4) and nitrite (2% aqueous solution) as an active ingredient Characterizing, for the alkali reducing agent coating compositions of neutralized reinforced concrete structures is known.
또한, 한국등록특허 10-1644846(2016년07월27일)에 염해 및 중성화 저항성이 개선된 콘크리트 구조물 표면 보호용 시멘트 모르타르 조성물로서, 무기질 결합재 5∼95중량%, 잔골재 1∼50중량%, 성능개선 폴리머 혼화제 0.01∼45중량% 및 물 0.1~20중량%를 포함하며, 상기 성능개선 폴리머 혼화제는 폴리 비닐 아세테이트-비닐 버사테이트 60∼98중량%, 스티렌-부틸 아크릴레이트 1∼25중량%, 메틸 메타크릴레이트-부틸 아크릴레이트 0.1∼20중량% 및 폴리이소부틸메타클레이트 0.01∼5중량%를 포함하고, 상기 무기질 결합재는 조강 시멘트 20∼90중량%, 칼슘 알루미나 시멘트 0.1∼20중량%, 분말도가 5,500~7,500cm2/g인 고로슬래그 미분말 0.1∼20중량%, 우드애시 0.1~20중량%, 황산아연 또는 황산 마그네슘 5∼50중량%, 석고 0.1∼10중량%, 및 유황 폴리머 분말 0.1~10중량%를 포함하는 것을 특징으로 하는 콘크리트 구조물 표면 보호용 시멘트 모르타르 조성물이 공지되어 있다.In addition, Korea Patent Registration 10-1644846 (July 27, 2016) as a cement mortar composition for protecting the surface of concrete structures with improved salt and neutralization resistance, 5 to 95% by weight of inorganic binder, 1 to 50% by weight of aggregate aggregate, improved performance 0.01 to 45% by weight of a polymer admixture and 0.1 to 20% by weight of water, wherein the improved polymer admixture is 60 to 98% by weight of polyvinyl acetate-vinyl versatate, 1 to 25% by weight of styrene-butyl acrylate, methyl meta 0.1-20 wt% of acrylate-butyl acrylate and 0.01-5 wt% of polyisobutyl methacrylate, wherein the inorganic binder is 20-90 wt% of crude steel cement, 0.1-20 wt% of calcium alumina cement, 0.1-20% by weight of blast furnace slag powder of 5,500-7,500 cm2 / g, 0.1-20% by weight of wood ash, 5-50% by weight of zinc sulfate or magnesium sulfate, 0.1-10% by weight of gypsum, and 0.1-10% of sulfur polymer powder To contain weight percent There is a surface protection of concrete structures cement mortar composition according to gong are known.
그러나, 상기와 같은 종래의 콘크리트 중성화 방지제는 내수성이 취약하여 벗겨짐 및 내화학성 저하 현상 등으로 인해 매년 재보수가 필요하고, 이로 인해 콘크리트 구조물에 이산화탄소, 물 등의 침투를 제대로 막지 못하여 여전히 중성화에 취약한 문제점이 있으며, 특히, 중성화 방지 첨가제에 의하여 보수몰탈과 콘크리트 구조체 사이의 접착력이 저하되어 보수몰탈의 박리 및 탈리의 심각한 문제점이 있었다.However, the conventional concrete anti-neutralization agent is required to be repaired every year due to peeling and deterioration of chemical resistance due to the weak water resistance, which is not enough to prevent the penetration of carbon dioxide, water, etc. into the concrete structure, and still vulnerable to neutralization. There is a problem, in particular, the adhesion between the repair mortar and the concrete structure is lowered by the anti-neutralization additive has a serious problem of peeling and detachment of the repair mortar.
본 발명은 상기한 문제점들을 해결하기 위하여, 일반적으로 사용되는 콘크리트 단면복구 및 보수몰탈에 중성화방지성분을 첨가한 콘크리트 구조물 중성화방지용 보수몰탈과 폴리머 접착제를 이용한 콘크리트 구조물 중성화방지 보수공법을 제공하는 것을 해결하고자 하는 과제로 한다.In order to solve the above problems, the present invention solves the problem of providing a concrete structure anti-neutralization repair method using a repair agent and neutralization prevention concrete mortar and a polymer adhesive for adding a neutralization prevention component to a concrete cross-sectional recovery and repair mortar generally used. Let's do the task.
본 발명은 상기 과제를 해결하기 위하여, 알루미나 시멘트 30~40 중량부, 규사 50~60 중량부, 탄산칼슘 3~7 중량부, VAE 재유화형 분말 폴리머 3~5 중량부, 무기접착제 3~5 중량부, 실리콘파우더 0.5~1 중량부, 발수파우더 0.3~1 중량부, 트리에탄올아민(TEA) 0.3~1 중량부, 유동화제 0.01~2 중량부, 증점제 0.01~2 중량부를 포함하여 조성되는 콘크리트 구조물 중성화방지용 보수몰탈을 과제의 해결수단으로 한다.The present invention to solve the above problems, 30 to 40 parts by weight of alumina cement, 50 to 60 parts by weight of silica sand, 3 to 7 parts by weight of calcium carbonate, 3 to 5 parts by weight of VAE re-emulsified powder polymer, 3 to 5 parts by weight of inorganic adhesive Part, neutralization of a concrete structure comprising 0.5 to 1 part by weight of silicon powder, 0.3 to 1 part by weight of water repellent powder, 0.3 to 1 part by weight of triethanolamine (TEA), 0.01 to 2 parts by weight of a fluidizing agent, and 0.01 to 2 parts by weight of a thickener. Preventive maintenance mortar is used as a solution to the problem.
상기 무기접착제는 액상규산나트륨(Na2O·nSiO2·xH2O)에 실리카졸을 물과 함께 혼합하되, 상기 액상규산나트륨 : 실리카졸 : 물을 1 : 0.5 : 1 중량비로 혼합한 것을 과제의 해결수단으로 한다.The inorganic adhesive was mixed with liquid silicate (Na 2 O · nSiO 2 · xH 2 O) silica sol with water, but the liquid sodium silicate: silica sol: water in a 1: 0.5: 1 weight ratio It is to solve the problem.
또한, 본 발명은 중성화된 콘크리트 구조물 표면에 고형분 45중량%의 아크릴 에멀젼 35중량%와, 고형분 55중량%의 EVA 에멀젼 15중량%와, 아크릴계증점제 0.5중량%와, 물 49.5중량%로 조성되는 폴리머 접착제를 도포하는 단계; 및 상기 콘크리트 구조물 중성화방지용 보수몰탈을 도포하는 단계;를 포함하는 콘크리트 구조물 중성화방지 보수공법을 과제의 해결수단으로 한다.In addition, the present invention is a polymer composed of 35% by weight of an acrylic emulsion of 45% by weight of solids, 15% by weight of an EVA emulsion of 55% by weight of solids, 0.5% by weight of an acrylic thickener, and 49.5% by weight of water on a neutralized concrete structure surface. Applying an adhesive; And applying a repair mortar for preventing the neutralization of the concrete structure.
상기 폴리머 접착제는 고형분 45중량%의 아크릴 에멀젼을 40℃로 가열하여 100rpm으로 교반하면서 아크릴계증점제를 첨가하여 점도를 1000cps로 조정한 후, 고형분 55중량%의 EVA 에멀젼을 분당 1리터로 천천히 적하하면서 1,000rpm으로 고속 교반하여 제조되는 것을 과제의 해결수단으로 한다.The polymer adhesive was prepared by heating an acrylic emulsion having a solid content of 45% by weight to 40 ° C, adding an acrylic thickener while stirring at 100 rpm, adjusting the viscosity to 1000 cps, and slowly dropping the EVA emulsion having a solid content of 55% by weight to 1 liter per minute. It is made to solve the problem that it is manufactured by stirring at high speed at rpm.
본 발명의 콘크리트 구조물 중성화방지용 보수몰탈 및 이를 이용한 콘크리트 구조물 중성화방지 보수공법은 콘크리트와 이산화탄소, 물 등의 침투를 방지하여 중성화를 방지하고, 보수몰탈과 콘크리트 구조체 사이에 폴리머 접착제를 프라이머로 도포하여 보수몰탈의 접착력을 향상시켜 콘크리트로부터의 박리 및 탈리를 방지하여 콘크리트 보수효과를 극대화하고 콘크리트 구조물의 수명을 연장할 수 있는 우수한 효과가 있다.The repair mortar for preventing the neutralization of the concrete structure of the present invention and the repair method for preventing the neutralization of the concrete structure using the same prevent the neutralization by preventing the penetration of concrete, carbon dioxide, water, etc. By improving the adhesion of mortar to prevent peeling and detachment from the concrete has the excellent effect to maximize the concrete repair effect and extend the life of the concrete structure.
본 발명은, 알루미나 시멘트 30~40 중량부, 규사 50~60 중량부, 탄산칼슘 3~7 중량부, VAE 재유화형 분말 폴리머 3~5 중량부, 무기접착제 3~5 중량부, 실리콘파우더 0.5~1 중량부, 발수파우더 0.3~1 중량부, 트리에탄올아민(TEA) 0.3~1 중량부, 유동화제 0.01~2 중량부, 증점제 0.01~2 중량부를 포함하여 조성되는 콘크리트 구조물 중성화방지용 보수몰탈을 기술구성의 특징으로 한다.The present invention, 30 to 40 parts by weight of alumina cement, 50 to 60 parts by weight of silica sand, 3 to 7 parts by weight of calcium carbonate, 3 to 5 parts by weight of VAE reemulsifying powder polymer, 3 to 5 parts by weight of inorganic adhesive, 0.5 to 0.5 parts of silicon powder Technical composition of a concrete mortar to prevent neutralization of a concrete structure including 1 part by weight, 0.3-1 part by weight of water repellent powder, 0.3-1 part by weight of triethanolamine (TEA), 0.01-2 parts by weight of a fluidizing agent, and 0.01-2 parts by weight of a thickener. It is characterized by.
상기 무기접착제는 액상규산나트륨(Na2O·nSiO2·xH2O)에 실리카졸을 물과 함께 혼합하되, 상기 액상규산나트륨 : 실리카졸 : 물을 1 : 0.5 : 1 중량비로 혼합한 것을 기술구성의 특징으로 한다.The inorganic adhesive is a liquid sodium silicate (Na 2 O · nSiO 2 · xH 2 O) mixed with a silica sol with water, but the liquid sodium silicate: silica sol: water in a 1: 0.5: 1 by weight ratio technology It is characterized by the configuration.
또한, 본 발명은 중성화된 콘크리트 구조물 표면에 고형분 45중량%의 아크릴 에멀젼 35중량%와, 고형분 55중량%의 EVA 에멀젼 15중량%와, 아크릴계증점제 0.5중량%와, 물 49.5중량%로 조성되는 폴리머 접착제를 도포하는 단계; 및 상기 콘크리트 구조물 중성화방지용 보수몰탈을 도포하는 단계;를 포함하는 콘크리트 구조물 중성화방지 보수공법을 기술구성의 특징으로 한다.In addition, the present invention is a polymer composed of 35% by weight of an acrylic emulsion of 45% by weight of solids, 15% by weight of an EVA emulsion of 55% by weight of solids, 0.5% by weight of an acrylic thickener, and 49.5% by weight of water on a neutralized concrete structure surface. Applying an adhesive; And applying the repair mortar for preventing the neutralization of the concrete structure.
상기 폴리머 접착제는 고형분 45중량%의 아크릴 에멀젼을 40℃로 가열하여 100rpm으로 교반하면서 아크릴계증점제를 첨가하여 점도를 1000cps로 조정한 후, 고형분 55중량%의 EVA 에멀젼을 분당 1리터로 천천히 적하하면서 1,000rpm으로 고속 교반하여 제조되는 것을 기술구성의 특징으로 한다.The polymer adhesive was prepared by heating an acrylic emulsion having a solid content of 45% by weight to 40 ° C, adding an acrylic thickener while stirring at 100 rpm, adjusting the viscosity to 1000 cps, and slowly dropping the EVA emulsion having a solid content of 55% by weight to 1 liter per minute. It is characterized by the technical configuration that it is prepared by high-speed stirring at rpm.
이하에서는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본 발명의 바람직한 실시예를 통하여 상세히 설명한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며, 여기에서 설명하는 실시예에 한정되지 않는다.Hereinafter, the present invention will be described in detail with reference to preferred embodiments of the present invention so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.
본 발명의 콘크리트 구조물 중성화방지용 보수몰탈은 알루미나 시멘트 30~40 중량부, 규사 50~60 중량부, 탄산칼슘 3~7 중량부, VAE 재유화형 분말 폴리머 3~5 중량부, 무기접착제 3~5 중량부, 실리콘파우더 0.5~1 중량부, 발수파우더 0.3~1 중량부, 트리에탄올아민(TEA) 0.3~1 중량부, 유동화제 0.01~2 중량부, 증점제 0.01~2 중량부를 포함하여 조성된다.The repair mortar for preventing the neutralization of the concrete structure of the present invention is 30 to 40 parts by weight of alumina cement, 50 to 60 parts by weight of silica sand, 3 to 7 parts by weight of calcium carbonate, 3 to 5 parts by weight of VAE reemulsified powder polymer, and 3 to 5 weights of an inorganic adhesive. Part, 0.5 to 1 part by weight of silicon powder, 0.3 to 1 part by weight of water repellent powder, 0.3 to 1 part by weight of triethanolamine (TEA), 0.01 to 2 parts by weight of a fluidizing agent, and 0.01 to 2 parts by weight of a thickener.
이때, 상기 알루미나 시멘트는 CaO·Al2O3 및 5CaO·3Al2O3이 주요 광물로서 포틀랜드 시멘트에 비해서 알루미나 성분이 상당히 많고, 포틀랜드 시멘트 보다 내식성, 내화성, 급결성이 우수하다. 이로 인해 본 발명에는서 내식성, 초속경, 속건성의 물성 증진 효과를 나타낸다. 상기 알루미나 시멘트는 석회석과 보크사이트 또는 반토혈암 등 알루미나 성분이 많은 점토류와 배합하여 1500~1600℃에서 용융한 다음 유출시켜서 냉각한 후 미세한 분말로 함으로써 제조될 수 있다. 알루미나 시멘트의 사용량은 30~40 중량부이고, 바람직하게는 35 중량부이다. 알루미나 시멘트 사용량이 30중량부 미만이면 경화 속도가 느려지고, 40중량부를 초과하면 급결로 인한 수축으로 갈라짐 현상이 있다.At this time, the alumina cement is CaO · Al 2 O 3 and 5CaO · 3Al 2 O 3 as the main minerals are significantly more alumina components than Portland cement, it is better corrosion resistance, fire resistance, and quickness than Portland cement. For this reason, the present invention exhibits the effect of improving the physical properties of corrosion resistance, superhard, quick-drying. The alumina cement may be prepared by mixing with alumina-rich clays such as limestone and bauxite or alumina shale, melting at 1500-1600 ° C., cooling it by flowing out, and then preparing a fine powder. The amount of alumina cement used is 30 to 40 parts by weight, preferably 35 Parts by weight. When the amount of alumina cement used is less than 30 parts by weight, the curing rate is slowed, and when it exceeds 40 parts by weight, there is a phenomenon of cracking due to shrinkage due to rapid freezing.
상기 규사는 특별히 제한되지는 않으나, 바람직하게는 0.3mm 이하 규사이다. 상기 규사는 수분함량이 3% 이하인 것이 바람직하다. 규사의 사용량은 50~60 중량부이고, 보다 바람직하게는 55 중량부이다. 규사의 사용량이 50 중량부 미만이면 압축강도가 저하되고 시공 두께를 높이기가 어렵고, 60 중량부를 초과하면 유동성 저하 및 크랙 및 수축이 있을 수 있다. The silica sand is not particularly limited, but is preferably 0.3 mm or less silica sand. The silica sand is preferably 3% or less moisture. The amount of silica sand used is 50 to 60 parts by weight, more preferably 55 parts by weight. If the amount of silica sand is less than 50 parts by weight, the compressive strength is lowered and it is difficult to increase the construction thickness. If the amount of the silica sand is more than 60 parts by weight, fluidity may be decreased and cracks and shrinkage may occur.
상기 탄산칼슘은 특별히 제한되지는 않으나, 입자 사이즈가 350㎛이하이고, 흡유량이 1% 이하인 것이 바람직하다. 탄산칼슘 사용량은 3~7중량부이고, 바람직하게는 5중량부이다. 탄산칼슘의 양이 3 중량부 미만이면 강도가 저하되고 초기 건조속도가 느려지며, 7 중량부를 초과하면 유동성 저하, 재료분리(Bleeding) 및 레이턴스(Laitance) 등의 현상이 발생할 수 있다. The calcium carbonate is not particularly limited, but the particle size is preferably 350 µm or less, and the oil absorption amount is 1% or less. The calcium carbonate amount is 3 to 7 parts by weight, preferably 5 parts by weight. If the amount of calcium carbonate is less than 3 parts by weight, the strength is lowered and the initial drying rate is lowered. If the amount of calcium carbonate is greater than 7 parts by weight, fluidity degradation, material separation (Bleeding), and latencies may occur.
상기 VAE 재유화형 분말 폴리머는 접착 보조제 및 물성 증가제로서 수분이 건조되면 알루미나 시멘트 및 규사 사이에 바인더 역할를 해주어 접착력 증가, 내마모성 향상, 크랙 및 박리현상 방지, 휨강도를 강화시켜 준다. 본 발명에서 사용된 VAE 재유화형 분말 폴리머는 독일 Wacker 사에서 나오는 Vinnapas 5044N을 사용한다. 5044N은 입경이 75㎛~85㎛이고, 비중이 0.45~0.6이며, 유리전이온도가 10℃이다.The VAE reemulsifying powder polymer acts as a binder between alumina cement and silica sand when the moisture is dried as an adhesion aid and a physical property increasing agent, thereby increasing adhesion, improving wear resistance, preventing cracks and peeling, and strengthening bending strength. The VAE reemulsifying powder polymer used in the present invention uses Vinnapas 5044N from Wacker, Germany. 5044N has a particle diameter of 75 μm to 85 μm, a specific gravity of 0.45 to 0.6, and a glass transition temperature of 10 ° C.
상기 VAE 재유화형 분말 폴리머의 사용량은 3~5 중량부이며, 바람직한 사용량은 4 중량부이다. 상기 VAE 재유화형 분말 폴리머의 사용량이 3 중량부 미만이면 기대 이상의 접착력, 내마모성 등의 물리적 물성이 나오지 않고, 5 중량부를 초과하면 경화가 지연되고 압축강도가 떨어지는 단점이 있다. The amount of the VAE reemulsified powder polymer is 3 to 5 parts by weight, and the preferred amount is 4 parts by weight. If the amount of the VAE re-emulsified powder polymer is less than 3 parts by weight, physical properties such as adhesion and abrasion resistance are not higher than expected, and when the amount of the VAE reemulsified powder polymer is greater than 5 parts by weight, curing is delayed and compressive strength is lowered.
상기 무기접착제는 액상규산나트륨(Na2O·nSiO2·xH2O)에 실리카졸을 물과 함께 혼합하되, 상기 액상규산나트륨 : 실리카졸 : 물을 1 : 0.5 : 1 중량비로 혼합한 것을 사용한다.The inorganic adhesive is a liquid sodium silicate (Na 2 O · nSiO 2 · xH 2 O) mixed with a silica sol with water, the liquid sodium silicate: silica sol: water is used in a mixture of 1: 0.5: 1 weight ratio do.
상기 액상규산나트륨(Na2O·nSiO2·xH2O)은 물유리라고도 불리우며 점성질의 알칼리성을 나타내는 투명한 용액으로, 한국공업규격(KSM1415)에서 정하는 종류는 Na2O와 SiO2의 몰비가 1 : 2.064 ~ 4.300으로 여러 가지 조성을 갖는다.The liquid sodium silicate (Na 2 O · nSiO 2 · xH 2 O) is also called water glass and is a transparent solution showing viscous alkalinity. The type defined in the Korean Industrial Standard (KSM1415) is 1 at a molar ratio of Na 2 O and SiO 2 . It has various compositions from 2.064 to 4.300.
상기 실리카졸은 실리카 등으로 불리는 이산화규소(SiO2)가 물에서 음이온의 콜로이드 상태를 이루고 있는 것으로서, 점성이 있는 액상의 물질이며, 상기 액상규산나트륨(Na2O·nSiO2·xH2O)과 실리카졸을 배합하면, 이산화규소의 성분이 아주 많은 액상규산나트륨(Na2O·nSiO2·xH2O)이 되어 강력한 접착성을 가지게 된다.The silica sol is a colloidal state of silicon dioxide (SiO 2 ), called silica, etc. in water, is a viscous liquid material, the liquid sodium silicate (Na 2 O · nSiO 2 · xH 2 O) When the silica sol and the silica sol are mixed, the silicon dioxide has a very large amount of liquid sodium silicate (Na 2 O · nSiO 2 · xH 2 O), which has strong adhesion.
그러나 상기 액상규산나트륨(Na2O·nSiO2·xH2O)은 물이 증발하면 고형화되면서 접착성을 가지므로 무기접착제로 많이 이용되고 있으나, 상기 액상규산나트륨(Na2O·nSiO2·xH2O) 중의 나트륨 이온이 공기 중의 수분 또는 물과 반응하여 수산화나트륨을 생성하면서 친수성으로 변화되므로, 수분에 의하여 강도가 급격히 약화되는 문제점이 있으므로 그 자체로 무기접착제로 사용하기에는 부적당하다.However, the liquid sodium silicate (Na 2 O · nSiO 2 · xH 2 O) is used as an inorganic adhesive because it solidifies when water evaporates, but is used as an inorganic adhesive, but the liquid sodium silicate (Na 2 O · nSiO 2 · xH Since sodium ions in 2O) change to hydrophilicity by reacting with water or water in the air to produce sodium hydroxide, there is a problem that the strength is rapidly weakened by water, which is not suitable for use as an inorganic adhesive by itself.
따라서, 본 발명에서는 상기 액상규산나트륨(Na2O·nSiO2·xH2O)의 접착강도가 강하고 수분에 안정적이도록 상기 액상규산나트륨(Na2O·nSiO2·xH2O)에 실리카졸을 물과 함께 혼합하여 사용하되, 상기 액상규산나트륨 : 실리카졸 : 물을 1 : 0.5 : 1 중량비로 혼합하여 적정한 점도범위 내에서 액상규산나트륨(Na2O·nSiO2·xH2O)에 실리카졸을 물과 함께 혼합하여 사용하여 접착성을 증대시킨다.Therefore, in the present invention, a silica sol is added to the liquid sodium silicate (Na 2 O.nSiO 2 .xH 2 O) so that the adhesion strength of the liquid sodium silicate (Na 2 O.nSiO 2 .xH 2 O) is strong and stable to moisture. Mix with water, and mix the liquid sodium silicate: silica sol: water in a weight ratio of 1: 0.5: 1 to silica sol in liquid silicate (Na 2 O · nSiO 2 · xH 2 O) within an appropriate viscosity range. Mixed with water to increase adhesion.
이때, 상기 무기접착제의 사용량은 3~5 중량부 사용하는 것이 바람직하며, 3 중량부 미만 사용하면 무기접착효과를 기대할 수 없고, 5 중량부를 초과하면 보수몰탈의 강도가 저하되는 문제점이 있게 된다.At this time, the amount of the inorganic adhesive is preferably used in 3 to 5 parts by weight, if less than 3 parts by weight can not expect the inorganic adhesive effect, if it exceeds 5 parts by weight there is a problem that the strength of the repair mortar decreases.
상기 실리콘 파우더는 보수몰탈의 내수성을 증대 시키는 역할을 한다. 전체 조성물 중량대비 0.01~2 중량부가 바람직하다. 사용량이 많으면 접착력이 떨어지므로 본 발명의 실시예에는 0.5 중량부 사용하였다. The silicon powder serves to increase the water resistance of the repair mortar. 0.01-2 weight part is preferable with respect to the weight of the whole composition. If the amount is large, since the adhesive strength is reduced, 0.5 parts by weight was used in the embodiment of the present invention.
상기 발수 파우더는 보수몰탈의 물흡수를 최소화 하는 역할을 한다. 상기 발수 파우더는 신원화학의 Ca-stearate를 사용한다. 사용량이 많으면 접착력 및 강도가 저감 되므로 사용량은 0.01~2 중량부가 바람직하다. 본 발명의 실시예에는 0.1 중량부로 사용하였다.The water-repellent powder serves to minimize the water absorption of the repair mortar. The water-repellent powder uses Ca-stearate of identity chemicals. If the amount is large, the adhesion and strength is reduced, so the amount is preferably 0.01 to 2 parts by weight. 0.1 parts by weight was used in the embodiment of the present invention.
상기 트리에탄올아민(TEA)은 강알칼리성 물질로 본 발명의 보수몰탈의 중성화 방지에 핵심 첨가제 역할을 하며, 특히 보수몰탈의 이산화탄소 및 물에 의한 산화반응에 따른 pH 저하를 억제하여 보수몰탈의 중성화를 방지하기 위한 알칼리화제로 사용하며, 그 사용량은 0.3~1 중량부 사용하는 것이 바람직하다. The triethanolamine (TEA) is a strongly alkaline material and serves as a key additive in the neutralization of the repair mortar of the present invention, and in particular, it prevents the neutralization of the repair mortar by inhibiting the pH decrease caused by the carbon dioxide and water oxidation of the repair mortar. It is used as an alkalizing agent for the use, and the amount of use is preferably 0.3 to 1 part by weight.
한편, 본 발명의 콘크리트 구조물 중성화방지용 보수몰탈에는 유동화제 및 증점제를 추가로 사용하는데, 이들의 함량은 통상의 범위 내에서 사용될 수 있으므로 특별히 제한되지는 않지만, 바람직하게는 유동화제 0.01~2 중량부, 증점제 0.01~2 중량부를 사용할 수 있다. On the other hand, the concrete structure of the present invention neutralizing repair mortar to use additionally the fluidizing agent and thickener, the content thereof is not particularly limited because it can be used in the usual range, preferably 0.01 to 2 parts by weight of the fluidizing agent , Thickener 0.01-2 parts by weight can be used.
상기 유동화제는 보수몰탈의 유동성을 증가시키기 위해 사용된다. 본 발명에서 유동화제는 분자 속에 한 개 이상의 극성 그룹을 가지고 있는 중합체를 의미하며, 화학 구조상 알루미나 시멘트 입자를 분산시키는 성능이 뛰어나고 감수성능이 우수하며, 아울러 응결지연 및 과다한 공기연행이나 강도저하 등의 부작용 없이 단위 혼수량을 대폭 감수시킬 수 있는 혼화제를 말한다. 상기 조건에 따르는 한 특별히 제한되지는 않지만, 바람직하게 본 발명에 사용될 수 있는 유동화제의 친환경 소재인 하이드록시 폴리 카르본산계인 독일 Conpac 사의 149S를 사용하였다. The glidant is used to increase the fluidity of the repair mortar. In the present invention, the fluidizing agent refers to a polymer having one or more polar groups in a molecule, and has excellent chemical dispersing ability to disperse alumina cement particles and excellent susceptibility, and also delays coagulation and excessive air entrainment or strength reduction. The admixture that can greatly reduce the amount of unit coma without side effects. Although not particularly limited as long as the above conditions are used, 149S of Conpac, Germany, which is a hydroxy polycarboxylic acid system which is preferably an environmentally friendly material of a fluidizing agent which can be used in the present invention, is used.
상기 증점제는 메틸 셀룰로오스(methyl cellulose)계 증점제를 사용한다. 본 발명에서는 점도가 20,000cps인 롯데케미칼 15US를 사용하였다. 증점제의 사용량이 상기 범위일 때 겉마름 현상이 발생하지 않게 되어 표면 갈라짐이 방지되면서도 물속에서의 씻겨짐 현상을 방지해줘서 작업성 향상을 도모할 수 있다. The thickener uses a methyl cellulose thickener. In the present invention, Lotte Chemical 15US having a viscosity of 20,000 cps was used. When the amount of the thickener is in the above range, the dryness does not occur, thereby preventing surface cracking and preventing washing in the water, thereby improving workability.
또한, 본 발명의 콘크리트 구조물 중성화방지 보수공법은 중성화된 콘크리트 구조물 표면에 고형분 45중량%의 아크릴 에멀젼 35중량%와, 고형분 55중량%의 EVA 에멀젼 15중량%와, 아크릴계증점제 0.5중량%와, 물 49.5중량%로 조성되는 폴리머 접착제를 도포하는 단계; 및 상기 콘크리트 구조물 중성화방지용 보수몰탈을 도포하는 단계;를 포함하여 구성된다.In addition, the concrete structure anti-neutralization repair method of the present invention is 35% by weight of the acrylic emulsion of 45% by weight of solid, 15% by weight of the EVA emulsion of 55% by weight, 0.5% by weight of acrylic thickener and water on the surface of the neutralized concrete structure Applying a polymer adhesive composed of 49.5% by weight; And applying a repair mortar for preventing the neutralization of the concrete structure.
이때, 상기 폴리머 접착제는 고형분 45중량%의 아크릴 에멀젼을 40℃로 가열하여 100rpm으로 교반하면서 아크릴계증점제를 첨가하여 점도를 1000cps로 조정한 후, 고형분 55중량%의 EVA 에멀젼을 분당 1리터로 천천히 적하하면서 1,000rpm으로 고속 교반하여 제조된다.At this time, the polymer adhesive was heated to 40 ℃ of the acrylic emulsion of 45% by weight of solid content while stirring at 100rpm and added an acrylic thickener to adjust the viscosity to 1000cps, then slowly dropping the EVA emulsion of 55% by weight of solid content to 1 liter per minute It is prepared by stirring at high speed at 1,000rpm.
[본 발명의 콘크리트 구조물 중성화방지용 보수몰탈 제조][Production of repair mortar for preventing neutralization of concrete structure of the present invention]
알루미나 시멘트 35 중량부, 규사 55 중량부, 탄산칼슘 5 중량부, VAE 재유화형 분말 폴리머 4 중량부, 무기접착제 4 중량부, 실리콘파우더 0.5 중량부, 발수파우더 0.1 중량부, 트리에탄올아민(TEA) 0.5 중량부, 유동화제 0.3 중량부, 증점제 0.1 중량부를 배합하여 본 발명의 콘크리트 구조물 중성화방지용 보수몰탈을 제조하였다.35 parts by weight of alumina cement, 55 parts by weight of silica sand, 5 parts by weight of calcium carbonate, 4 parts by weight of VAE re-emulsified powder polymer, 4 parts by weight of inorganic adhesive, 0.5 parts by weight of silicon powder, 0.1 parts by weight of water-repellent powder, triethanolamine (TEA) 0.5 By weight, 0.3 parts by weight of fluidizing agent, 0.1 parts by weight of thickener was prepared to prepare a repair mortar for preventing the neutralization of the concrete structure of the present invention.
[본 발명의 콘크리트 구조물 중성화방지용 보수몰탈의 물성시험][Physical Testing of Repair Mortar for Preventing Neutralization of Concrete Structures of the Present Invention]
[실시예 1]에서 제조한 본 발명의 콘크리트 구조물 중성화방지용 보수몰탈을 KS F 4042 콘크리트 단면 복구용 폴리머 몰탈 시험 방법에 준하여 물성실험하였다. 그 결과를 다음 [표 1]에 나타내었다. The repair mortar for preventing the neutralization of the concrete structure of the present invention prepared in Example 1 was tested for physical properties in accordance with the KS F 4042 polymer mortar test method for concrete section recovery. The results are shown in the following [Table 1].
[비교예 1]Comparative Example 1
[일반 보수몰탈 제조][General Repair Mortar Manufacturing]
[실시예 1]에서 제조한 본 발명의 콘크리트 구조물 중성화방지용 보수몰탈과 비교시험하기 위하여 알루미나 시멘트 35 중량부, 규사 55 중량부, 탄산칼슘 5 중량부, VAE 재유화형 분말 폴리머 4 중량부, 유동화제 0.3 중량부, 증점제 0.1 중량부를 배합하여 일반 보수몰탈을 제조하였다.35 parts by weight of alumina cement, 55 parts by weight of silica sand, 5 parts by weight of calcium carbonate, 4 parts by weight of VAE re-emulsified powder polymer, fluidizing agent for comparative test with the repair mortar for preventing neutralization of the concrete structure of the present invention prepared in Example 1 General repair mortar was prepared by combining 0.3 part by weight and 0.1 part by weight of a thickener.
[본 발명의 콘크리트 구조물 중성화방지용 보수몰탈과 일반 보수몰탈의 흡수량 비교시험][Comparison test of absorption of repair mortar and neutral repair mortar for neutralizing concrete structures of the present invention]
본 발명의 콘크리트 구조물 중성화방지용 보수몰탈과 일반 보수몰탈의 흡수량을 비교시험하였다. 측정방법은 다음 그림과 같이 보수몰탈에 양면이 뚤린 메스실린더 관을 놓고 몰탈과 닿은 면을 실리콘으로 실링을 한 후 물을 50cc 부어서 24시간 후 물의 줄어든 량을 측정하였다. 그 결과를 다음 [표 2]에 나타내었다.The absorption amount of the repair mortar for preventing neutralization of the concrete structure of the present invention and the general repair mortar were compared. The measuring method was to place a mes-cylinder tube with both sides on the repair mortar as shown in the following figure, seal the surface in contact with the mortar with silicon, and pour 50 cc of water and measure the amount of water reduction after 24 hours. The results are shown in the following [Table 2].
상기 [표 2]에 나타난 바와 같이, 본 발명의 콘크리트 구조물 중성화방지용 보수몰탈의 흡수량은 일반 보수몰탈에 비하여 물흡수량이 현저히 적어 이산화탄소 및 물의 접촉이 방지되어 중성화방지 효과가 있는 것을 알 수 있으며, 이는 무기접착제, 실리콘 파우더 및 발수 파우더의 영향에 의한 것으로 판단된다. As shown in [Table 2], the water absorption of the repair mortar for preventing the neutralization of the concrete structure of the present invention is significantly less water absorption compared to the general repair mortar, it can be seen that the contact of carbon dioxide and water is prevented to have a neutralization effect. It is judged to be due to the influence of the inorganic adhesive, the silicone powder and the water repellent powder.
[콘크리트 구조물 표면과의 접착력 비교시험][Comparison Test of Adhesion to Concrete Structure Surface]
[실시예 1]에서 제조한 본 발명의 콘크리트 구조물 중성화방지용 보수몰탈과 본 발명의 폴리머 접착제를 사용하여 시공한 것과 [비교예 1]에서 제조한 일반 보수몰탈과 폴리머 접착제를 사용하지 않고 시공한 것의 콘크리트 구조물 표면과의 접착력을 비교시험하였다. 그 결과를 [표 3]에 나타내었다.The construction of the concrete structure of the present invention prepared in [Example 1] anti-neutralization repair mortar and the polymer adhesive of the present invention and the construction without using the general repair mortar and polymer adhesive prepared in [Comparative Example 1] Adhesion to the surface of concrete structures was compared. The results are shown in [Table 3].
[표 3]에 나타난 바와 같이, 본 발명의 콘크리트 구조물 중성화방지용 보수몰탈과 본 발명의 폴리머 접착제를 사용하여 시공할 경우 부착강도가 현저히 향상되는 것을 알 수 있다.As shown in [Table 3], it can be seen that the adhesion strength is remarkably improved when constructed using the repair mortar for preventing neutralization of the concrete structure of the present invention and the polymer adhesive of the present invention.
이상의 설명은 본 발명의 기술사상을 예시적으로 설명한 것에 불과한 것으로서, 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자라면 본 발명의 본질적인 특성에서 벗어나지 않는 범위에서 다양한 수정 및 변형이 가능할 것이다. 따라서, 본 발명에 개시된 실시예들은 본 발명의 기술 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 실시예에 의하여 본 발명의 기술 사상의 범위가 한정되는 것은 아니다. 본 발명의 보호 범위는 아래의 청구범위에 의하여 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술 사상은 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다.The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102369069B1 (en) * | 2021-08-11 | 2022-03-03 | 선진건설 주식회사 | Mortar composition comprising antibacterial and antiviral fiber stiffener and the method of repairing of concrete structure using thereof |
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