KR101057132B1 - Eco organic inorganic hybrid repair mortar composition and repair method of construction using the same - Google Patents
Eco organic inorganic hybrid repair mortar composition and repair method of construction using the same Download PDFInfo
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- KR101057132B1 KR101057132B1 KR20110030812A KR20110030812A KR101057132B1 KR 101057132 B1 KR101057132 B1 KR 101057132B1 KR 20110030812 A KR20110030812 A KR 20110030812A KR 20110030812 A KR20110030812 A KR 20110030812A KR 101057132 B1 KR101057132 B1 KR 101057132B1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
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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
- C04B14/38—Fibrous materials; Whiskers
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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
- 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
- C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
- C04B18/08—Flue dust, i.e. fly ash
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
Description
본 발명은 친환경 유무기 하이브리드 보수재 모르타르 조성물 및 이를 이용한 보수공법에 관한 것으로, 유기계 재료로는 분말 수지인 PVA계 폴리머 수지를 사용하고, 무기계 재료로는 시멘트계 재료를 선택하며, 천연 자원의 절약을 위하여 골재 크기가 조절된 고품질 순환 잔골재를 사용하여 제조된 친환경 유무기 하이브리드 보수재 모르타르 조성물로서 초강성, 방수성, 시공 후의 들뜸 현상 방지 및 부착 성능이 향상된 친환경 유무기 하이브리드 보수재 모르타르 조성물 및 이를 이용한 보수공법에 관한 것이다.
The present invention relates to an environment-friendly organic-inorganic hybrid repair material mortar composition and a repair method using the same, using an organic material PVA-based polymer resin of powder resin, select an inorganic material cement-based material, to save natural resources Eco-friendly organic-inorganic hybrid repair material mortar composition manufactured by using high-quality recycled fine aggregates with controlled aggregate size. It is an environmentally friendly organic-inorganic hybrid repair material mortar composition with super stiffness, waterproofness, prevention of lifting after construction and adhesion. will be.
일반적으로 건설 구조물의 대부분을 차지하고 있는 콘크리트 구조물은 시간 경과함에 따른 노후화 및 환경에 의한 변화 범위에 신축적으로 대응하지 못하거나, 자연 재해에 의해 부식되거나 마모되어 틈이 형성되고, 균열이 발생하는 현상으로 콘크리트 구조물의 내구 성능이 저하되는 현상이 초래되고 있다.
In general, concrete structures, which occupy most of construction structures, do not flexibly cope with aging and environmental changes over time, or are formed by cracks or corrosion due to natural disasters. As a result, the durability of the concrete structure is deteriorated.
종래에는 콘크리트 구조물에 부식, 마모, 균열에 의해 형성된 틈이나 박락 등에 대한 보수 방법으로 열화된 부분을 제거하고 동일 재료인 시멘트계 콘크리트나 모르타르를 타설하거나 뿜칠 등에 의해 단면을 복구하는 방법과 폴리머계 수지 등을 사용하여 단면의 코팅하는 방법으로 내식성을 강화시키는 방법들이 사용되고 있다.
Conventionally, a method of repairing a cross section by removing or deteriorating a portion of a concrete structure by repairing a gap or peeling formed by corrosion, abrasion, or cracking and casting or spraying cement-based concrete or mortar of the same material, and polymer resin, etc. The method of strengthening the corrosion resistance has been used as a method of coating the cross section using.
종래, 대표적인 콘크리트 보수재 조성물 또는 보수방법으로, 한국등록특허 제10-0964064호에는 기능성 무기질바인더 45∼55wt%, CSA계 팽창제 1∼5wt%, C12A7 급결재 1∼5wt%, 보수재 0.1∼0.3wt%, CaCO3 35∼45wt%, 고유동화제 0.1∼0.2wt% 를 포함하는 친환경 기능성 무기질 균열주입재를 이용한 균열보수공법이 공지된 바 있다.
Conventionally, as a typical concrete repair material composition or repair method, Korean Patent No. 10-0964064 has a functional inorganic binder 45-55wt%, CSA-based expander 1-5wt%, C12A7 quickener 1-5wt%, repair material 0.1-0.3wt% The crack repair method using an environmentally friendly functional inorganic crack injection material containing 35 to 45 wt% of CaCO3 and 0.1 to 0.2 wt% of a high fluidizing agent has been known.
한국등록특허 제10-0559150호에는 분말도가 8,000㎠/g 이상인 마이크로 시멘트 30 내지 45 중량%, 졸겔공정에 의하여 나노 수준으로 제조된 무기질 폴리머 3 내지 7 중량%, 탄산칼슘 30 내지 40 중량%, C12A7 급결재 4 내지 7 중량%, 보수재 0.1 내지 0.3중량%, 고유동화제 0.1 내지 0.3 중량%, 고로슬래그(8000) 5 내지 10 중량%, CSA 팽창제 8 내지 15 중량% 로 구성된 것을 특징으로 하는 콘크리트 및 건축구조물의 균열보수, 보강재로 사용할 수 있는 조성물이 공지되어 있다.
Korean Patent No. 10-0559150 discloses 30 to 45% by weight of micro cement having a powder degree of 8,000 cm 2 / g or more, 3 to 7% by weight of inorganic polymer prepared at the nano level by the sol-gel process, 30 to 40% by weight of calcium carbonate, 4 to 7% by weight of C12A7 quickener, 0.1 to 0.3% by weight of repairing material, 0.1 to 0.3% by weight of high fluidizing agent, 5 to 10% by weight of blast furnace slag 8000, 8 to 15% by weight of CSA expanding agent And compositions that can be used as crack repair and reinforcement for building structures are known.
한국등록특허 제10-0405022호에는 시멘트 100중량부를 기준으로 배합수 40∼100 중량부, 석고계 팽창제 10∼15중량부, CSA 5∼50중량부, 섬유 5∼20중량부, 유동화제 1∼3중량부, 지연제 0.2∼1중량부, 증점제 0.02∼0.08중량부, 고분자 수지 5∼50중량부 및 규사 170∼300중량부를 포함하는 것을 특징으로 하는 콘크리트 보수용 모르타르 조성물이 공지되어 있다.
In Korean Patent No. 10-0405022, based on 100 parts by weight of cement, 40 to 100 parts by weight, 10 to 15 parts by weight of gypsum-based expander, 5 to 50 parts by weight of CSA, 5 to 20 parts by weight of fiber, 1 to 1 part of a fluidizing agent There is known a mortar composition for repairing concrete, comprising 3 parts by weight, 0.2-1 part by weight of retardant, 0.02-0.08 parts by weight of thickener, 5-50 parts by weight of polymer resin and 170-300 parts by weight of silica sand.
그러나 상기와 같은 조성물 및 공법들은 별도의 층을 구비해주는 것으로 시공이 복잡하고 많은 작업 시간이 소요되는 문제점이 있으며, 특히 기존 시멘트계 보수재의 경우 경화 시간이 늦고, 수축이 심해 균열 발생의 위험이 크며, 시멘트계 보수재의 약 30% 이상이 폴리머계 수지로 구성되어 있어 주변 환경의 오염시킬 수 있으며, 산에 약하고 부식이 빠른 문제점이 있다.
However, the compositions and methods as described above have a problem in that the construction is complicated and takes a lot of work time. Particularly, in the case of the existing cement-based repair materials, the hardening time is slow and the shrinkage is severe, so the risk of cracking is great. About 30% or more of the cement-based repair material is composed of a polymer-based resin, which may contaminate the surrounding environment, and has a problem of weak acid and rapid corrosion.
또한, 폴리머계 수지를 이용한 코팅 방법은 고가의 폴리머 수지를 단면 복구용으로 사용하기 때문에 비경제적이며 구체 구조물과 동일 재료가 아닌 타 재료로 일정 기간이 경과 후에는 경계면에서 균열 및 탈락이 발생하고 자외선에 취약한 문제점이 있다.
In addition, the coating method using the polymer resin is inexpensive because the expensive polymer resin is used for the cross-sectional recovery, and other materials that are not the same materials as the concrete structure are cracked and dropped at the interface after a certain period of time. There is a vulnerable problem.
본 발명은 상기한 바와 같은 종래 기술의 제반 문제점을 해결하기 위하여, 콘크리트 구조물에 친환경 유무기 하이브리드 보수재 모르타르 조성물을 타설하여 친환경적이고 주변 환경 오염을 방지할 수 있는 친환경 유무기 하이브리드 보수재 모르타르 조성물을 제공하는 것을 해결하려는 과제로 한다.
The present invention to solve the problems of the prior art as described above, by providing an environmentally friendly organic-inorganic hybrid repair material mortar composition to a concrete structure to provide an environmentally friendly organic-inorganic hybrid repair material mortar composition that can prevent environmental pollution. To solve the problem.
또한, 본 발명은 산업부산물인 순환골재를 이용하여 천연 골재 대체로 환경 파괴를 줄이며, 기존 유무기 보수재료의 문제점인 부착성과 통기성을 향상시키기 위한 친환경 유무기 하이브리드 보수재 모르타르 조성물 및 이를 이용한 보수 공법을 제공하는 것을 해결하려는 과제로 한다.
In addition, the present invention provides environmentally friendly organic-inorganic hybrid repair material mortar composition and repair method using the same to reduce the environmental damage by replacing the natural aggregate by using recycled aggregate, which is an industrial by-product, and to improve the adhesion and air permeability of the existing organic-inorganic repair material. Do what you want to solve.
또한, 본 발명은 콘크리트 구조물의 보수는 시급의 요구하는 것으로 긴급 공사에 사용이 가능해야 하기 때문에 조강성을 구비하고 수축 및 크랙이 적어 작업성을 향상할 수 있는 친환경 유무기 하이브리드 보수재 모르타르 조성물 및 이를 이용한 보수 공법을 제공하는 것을 해결하려는 과제로 한다.
In addition, the present invention is an environmentally-friendly organic-inorganic hybrid repair material mortar composition that can improve the workability because it is required to be used for emergency construction as repair of the concrete structure must be available for urgent construction and less shrinkage and cracks and the same It is a problem to solve to provide the used repair method.
본 발명은 분말도가 3,000-3,500㎠/g이며, 보통 포틀랜드시멘트, 백색 포틀랜드시멘트, 알루미나시멘트, 조강포틀랜드시멘트, 초조강시멘트 중에서 1종 이상 선택되는 수경성 시멘트 35-40중량부와; 흡수율이 5% 미만이고, 절대건조밀도가 2.3 g/㎤ 이상이며, 입도 0.1~1.2㎜의 함량이 60~70중량%인 순환잔골재 45~50중량부와; 표면건조 포화상태의 비중 0.8~0.9, 흡수율 3~4%, 단위용적질량 300~500 kg/m3인 인공경량골재 8~10중량부와; 플라이애쉬 3~5중량부와; PVA 분말수지 1.65-2.45중량부와; 분말도 5,500-6,000㎠/g인 비정질 C12A7계 조강속경제 0.8-1.5중량부와; 비중이 2.86, 분말도 3,700㎠/g인 칼슘-설포-알루미네이트(Calsium-Sulpho-Aluminate) 팽창재 2.0-2.5중량부와; 직경 5~20㎛ 탄소섬유 보강재 0.5~1.0중량부와; 천연석고, 이수석고, 반수석고 또는 무수석고로부터 선택되는 응결지연제 0.3-1.0중량부와; 폴리카르본산계 또는 멜라민계 유동화제 0.03~0.05중량부와; 메틸셀룰로즈계 또는 폴리비닐아세테이트에서 1종 이상 선택되는 유기증점제 0.35-0.45중량부와; 물 25~50중량부;를 포함하여 구성되는 친환경 유무기 하이브리드 보수재 모르타르 조성물을 과제의 해결수단으로 한다.
The present invention has a powder degree of 3,000-3,500 cm 2 / g, 35-40 parts by weight of hydraulic cement which is usually at least one selected from portland cement, white portland cement, alumina cement, crude steel portland cement, super-steel cement; 45-50 parts by weight of circulating fine aggregate having a water absorption of less than 5%, an absolute dry density of 2.3 g / cm 3 or more, and a particle size of 0.1 to 1.2 mm of 60 to 70% by weight; 8 to 10 parts by weight of artificial light weight aggregate having a specific gravity of 0.8 to 0.9 of surface dry saturated state, 3 to 4% of water absorption, and 300 to 500 kg / m 3 of unit volume mass; 3 to 5 parts by weight of fly ash; 1.65-2.45 parts by weight of PVA powder resin; 0.8-1.5 parts by weight of amorphous C 12 A 7- based crude steel economy having a powder degree of 5,500-6,000 cm 2 / g; 2.0-2.5 parts by weight of a calcium-sulpho-aluminate expander having a specific gravity of 2.86 and a powder degree of 3,700 cm 2 / g; 0.5 to 1.0 parts by weight of carbon fiber reinforcement with a diameter of 5 to 20 µm; 0.3-1.0 parts by weight of a coagulation delay agent selected from natural gypsum, dihydrate gypsum, hemihydrate gypsum or anhydrous gypsum; 0.03-0.05 parts by weight of polycarboxylic acid or melamine fluidizing agent; 0.35-0.45 parts by weight of one or more organic thickeners selected from methyl cellulose or polyvinylacetate; 25 to 50 parts by weight of water; environmentally friendly organic-inorganic hybrid repair material mortar composition comprising a as a solution to the problem.
또한, 본 발명은 상기 친환경 유무기 하이브리드 보수재 모르타르 조성물을 준비하는 단계와; 콘크리트 구조물의 보수 바탕면의 이물질을 제거하는 단계와; 이물질이 제거된 콘크리트 구조물의 보수 바탕면에 상기 친환경 유무기 하이브리드 보수재 모르타르 조성물을 뿜칠 또는 미장에 의해 타설하여 시공하는 단계와; 상기 친환경 유무기 하이브리드 보수재 모르타르 조성물 시공 후, 표면 마감 및 보호재를 도포, 양생하는 단계를 포함하여 구성되는 친환경 유무기 하이브리드 보수재 모르타르 조성물을 이용한 콘크리트 보수공법을 과제의 해결수단으로 한다.
In addition, the present invention comprises the steps of preparing the environmentally friendly organic-inorganic hybrid repair material mortar composition; Removing foreign matter from the repair base surface of the concrete structure; Constructing and spraying the environment-friendly organic-inorganic hybrid repair material mortar composition by spraying or plastering on the repair base surface of the concrete structure from which foreign substances have been removed; After construction of the environmentally-friendly organic-inorganic hybrid repair material mortar composition, the concrete repair method using an environmentally-friendly organic-inorganic hybrid repair material mortar composition comprising the step of applying, curing the surface finish and protective material as a solution to the problem.
이상과 같이 본 발명은 유기계 재료인 분말형 수지인 PVA 폴리머 수지계와 결합재로는 수경성 재료인 시멘트와 보수재료에 다양한 기능을 부여하는 혼화재료를 혼합하고, 혼합된 분체계에 충전재를 투입하여 최종적으로 혼합하여 사용하는 것으로 유기계 보수재료에 대한 문제점을 해결하고 무기계 재료인 보수재료의 부착과 탈착을 문제점을 동시에 해결하는 효과가 있다.As described above, the present invention mixes PVA polymer resin, which is a powder-based resin, which is an organic material, and a cement, which is a hydraulic material, and a miscellaneous material which gives various functions to water-retaining materials, and finally adds filler to the mixed powder system. It is effective to solve the problem of organic repair materials by using a mixture and to solve the problem of the attachment and desorption of the repair material, which is an inorganic material.
또한, 본 발명은 조강성을 구비하고 부착성이 우수하며, 일반 시멘트가 물과 반응하고 경화되면서 일어나는 수축 현상을 최소화하고, 콘크리트 구조물과의 부착력을 향상시키므로 물이 흐르는 곳의 신속한 보수가 가능한 효과가 있다.In addition, the present invention has a roughness and excellent adhesion, minimize the shrinkage phenomenon occurs when the general cement reacts with water and cures, and improves the adhesion to the concrete structure, so that the water can be repaired quickly There is.
또한, 본 발명은 기존 보수재료들이 채택하고 있는 천연 골재가 아닌 산업부산물인 순환잔골재를 채택하고, 순환잔골재는 일반적으로 나오는 골재가 아닌 골재 크기를 조절한 것을 채택하여 친환경적인 효과가 있다.
In addition, the present invention adopts recycled aggregates, which are industrial by-products rather than natural aggregates that are used by existing repair materials, and recycled aggregates have eco-friendly effects by adopting aggregates that are not generally aggregates.
본 발명은 분말도가 3,000-3,500㎠/g이며, 보통 포틀랜드시멘트, 백색 포틀랜드시멘트, 알루미나시멘트, 조강포틀랜드시멘트, 초조강시멘트 중에서 1종 이상 선택되는 수경성 시멘트 35-40중량부와; 흡수율이 5% 미만이고, 절대건조밀도가 2.3 g/㎤ 이상이며, 입도 0.1~1.2㎜의 함량이 60~70중량%인 순환잔골재 45~50중량부와; 표면건조 포화상태의 비중 0.8~0.9, 흡수율 3~4%, 단위용적질량 300~500 kg/m3인 인공경량골재 8~10중량부와; 플라이애쉬 3~5중량부와; PVA 분말수지 1.65-2.45중량부와; 분말도 5,500-6,000㎠/g인 비정질 C12A7계 조강속경제 0.8-1.5중량부와; 비중이 2.86, 분말도 3,700㎠/g인 칼슘-설포-알루미네이트(Calsium-Sulpho-Aluminate) 팽창재 2.0-2.5중량부와; 직경 5~20㎛ 탄소섬유 보강재 0.5~1.0중량부와; 천연석고, 이수석고, 반수석고 또는 무수석고로부터 선택되는 응결지연제 0.3-1.0중량부와; 폴리카르본산계 또는 멜라민계 유동화제 0.03~0.05중량부와; 메틸셀룰로즈계 또는 폴리비닐아세테이트에서 1종 이상 선택되는 유기증점제 0.35-0.45중량부와; 물 25~50중량부;를 포함하여 구성되는 친환경 유무기 하이브리드 보수재 모르타르 조성물을 기술구성의 특징으로 한다.
The present invention has a powder degree of 3,000-3,500 cm 2 / g, 35-40 parts by weight of hydraulic cement which is usually at least one selected from portland cement, white portland cement, alumina cement, crude steel portland cement, super-steel cement; 45-50 parts by weight of circulating fine aggregate having a water absorption of less than 5%, an absolute dry density of 2.3 g / cm 3 or more, and a particle size of 0.1 to 1.2 mm of 60 to 70% by weight; 8 to 10 parts by weight of artificial light weight aggregate having a specific gravity of 0.8 to 0.9 of surface dry saturated state, 3 to 4% of water absorption, and 300 to 500 kg / m 3 of unit volume mass; 3 to 5 parts by weight of fly ash; 1.65-2.45 parts by weight of PVA powder resin; 0.8-1.5 parts by weight of amorphous C 12 A 7- based crude steel economy having a powder degree of 5,500-6,000 cm 2 / g; 2.0-2.5 parts by weight of a calcium-sulpho-aluminate expander having a specific gravity of 2.86 and a powder degree of 3,700 cm 2 / g; 0.5 to 1.0 parts by weight of carbon fiber reinforcement with a diameter of 5 to 20 µm; 0.3-1.0 parts by weight of a coagulation delay agent selected from natural gypsum, dihydrate gypsum, hemihydrate gypsum or anhydrous gypsum; 0.03-0.05 parts by weight of polycarboxylic acid or melamine fluidizing agent; 0.35-0.45 parts by weight of one or more organic thickeners selected from methyl cellulose or polyvinylacetate; 25-50 parts by weight of water; environmentally friendly organic-inorganic hybrid repair material mortar composition comprising a feature of the technical configuration.
또한, 본 발명은 상기 친환경 유무기 하이브리드 보수재 모르타르 조성물을 준비하는 단계와; 콘크리트 구조물의 보수 바탕면의 이물질을 제거하는 단계와; 이물질이 제거된 콘크리트 구조물의 보수 바탕면에 상기 친환경 유무기 하이브리드 보수재 모르타르 조성물을 뿜칠 또는 미장에 의해 타설하여 시공하는 단계와; 상기 친환경 유무기 하이브리드 보수재 모르타르 조성물 시공 후, 표면 마감 및 보호재를 도포, 양생하는 단계를 포함하여 구성되는 친환경 유무기 하이브리드 보수재 모르타르 조성물을 이용한 콘크리트 보수공법을 기술구성의 특징으로 한다.
In addition, the present invention comprises the steps of preparing the environmentally friendly organic-inorganic hybrid repair material mortar composition; Removing foreign matter from the repair base surface of the concrete structure; Constructing and spraying the environment-friendly organic-inorganic hybrid repair material mortar composition by spraying or plastering on the repair base surface of the concrete structure from which foreign substances have been removed; After the construction of the environmentally friendly organic-inorganic hybrid repair material mortar composition, a concrete repair method using an environmentally-friendly organic-inorganic hybrid repair material mortar composition comprising the step of applying, curing the surface finish and protective material is characterized by the technical configuration.
이하에서는 본 발명을 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본 발명의 실시예를 통해 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 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.
우선, 시멘트(결합재)는 부착력과 강도증진의 목적으로 사용하는 것으로서, 분말도가 3,000-3,500㎠/g인 보통 포틀란트 시멘트, 백색 포틀란트 시멘트, 알루미나시멘트, 조강포틀랜드 시멘트, 초조강 시멘트 등의 수경성 시멘트류에서 1종 선정하여 단독으로 사용하거나 2종 이상을 선정하여 혼합하여 사용할 수 있다.
First of all, cement (binding material) is used for the purpose of improving adhesion and strength, and is usually portland cement, white portland cement, alumina cement, crude steel portland cement, and crude steel cement with a powder level of 3,000-3,500 cm2 / g. It can be used alone by selecting one kind from hydraulic cements, etc., or by mixing two or more kinds.
상기 시멘트의 분말도는 3,000-3,500㎠/g인 것을 사용하는 바, 분말도가 상기 범위내일 경우에는 물과의 혼합시에 접촉면적이 크므로 수화작용이 빠르고, 강도의 속도가 빠르며 시멘트의 성능이 최대로 발휘되나. 상기 범위 밖의 경우에는 풍화되기 쉽고 또한 균열이 발생하기 쉬운 문제점이 있다.
The cement has a powder degree of 3,000-3,500 cm 2 / g. When the powder degree is within the above range, the contact area is large at the time of mixing with water, so that the hydration is fast, the speed of strength is high, and the performance of cement is high. Is this at maximum? If it is outside the above range, there is a problem that it is easy to weather and cracks easily.
상기 시멘트를 다량 사용할 경우는 보수재의 부착력과 강도는 우수해지는 반면 형성된 수화물의 양이 증가하기 때문에 습기로 인한 열화가 쉽게 되고, 너무 적게 사용할 경우는 부착력과 강도가 저하되는 문제가 있으므로 전체 보수재 조성물에 대하여 35~40중량부를 사용하는 것이 효과적이다.
In the case of using a large amount of cement, the adhesion and strength of the repairing material are excellent, while the amount of hydrates formed increases, so that deterioration due to moisture is easy. It is effective to use 35 to 40 parts by weight.
한편, 본 발명에서 사용하는 골재는 천연규사가 아닌 순환잔골재를 사용하는 바, 폐자원인 건설폐기물의 대부분을 차지하는 폐콘크리트를 재생하여 순환잔골재로 생산되고, 생산된 순환잔골재를 천연규사 등의 천연골재를 대신해 순환잔골재로 대체함에 따라 한정된 천연자원에 의한 골재수급의 불균형 해소 및 방지하는데 기여하며, 순환잔골재중 흡수율 및 최적의 절대건조밀도를 갖는 순환잔골재를 사용하여 천연골재를 사용한 제품과 동등한 물성을 이루거나 더 우수한 물성을 이루어 제품의 품질 및 신뢰도를 높이는 효과가 있다.
Meanwhile, the aggregate used in the present invention uses recycled fine aggregates, not natural silica, and recycles waste concrete, which accounts for most of construction waste, which is a waste resource, and is produced as recycled fine aggregate. By replacing recycled aggregates with aggregates instead of aggregates, it contributes to solving and preventing imbalances in aggregate supply and demand by limited natural resources, and the same physical properties as products using natural aggregates by using recycled fine aggregates with absorption rate and optimal absolute dry density among recycled aggregates. Or better physical properties to improve the quality and reliability of the product.
또한, 상기 순환잔골재를 천연규사에 대체재로 사용하여 보수재 조성물을 형성하게 되면, 천연골재인 천연규사를 상기 순환잔골재로 100%로 대체하여 사용할 수 있으므로 재료비용을 대폭 줄이고, 천연자원의 보존 및 환경오염을 최소화하는 것이 가능한 바, 본 발명에서 상기 순환잔골재의 사용량은 45~50중량부를 사용하는 것이 바람직하다.
In addition, when the recycled fine aggregate is used as a substitute for natural silica, a water refining composition is formed. Since the natural fine silica, which is natural aggregate, can be replaced with 100% of the fine recycled aggregate, the material cost can be greatly reduced, and natural resources are preserved and the environment. It is possible to minimize contamination, the amount of the recycled aggregates used in the present invention is preferably used 45 to 50 parts by weight.
상기 순환잔골재는 골재의 흡수율이 5% 미만이고, 절대건조밀도가 2.3(g/㎤) 이상이며, 입도 0.1~1.2㎜의 함량이 60~70중량%로 이루어지는 것을 사용하는 바, 흡수율이 클 경우에는 보수재의 품질에 치명적인 영향을 미쳐 품질이 낮아지는데, 그 영향을 살펴보면, 흡수율이 큰 순환잔골재가 적용된 보수재층이 굳지 않은 상태의 경우에는 펌프 압송시 압력이 작용하여 골재 내부로 물이 흡수됨에 따라 슬럼프(slump)저하 및 펌프 압송성이 저하되는 악영향을 미치게 되고, 보수재층이 굳은 상태에서는 공극수 배출에 의한 수축균열이 발생함에 따라 강도 및 동결융해저항성을 저하하는데 영향을 미쳐 내구성능을 저하시키는 원인으로 작용하게 된다.
The recycled aggregate aggregate is less than 5% of the aggregate absorption, the absolute dry density is 2.3 (g / cm 3) or more, the particle size of 0.1 ~ 1.2㎜ content of 60 to 70% by weight, when the absorption rate is large In this case, the quality of the water is lowered due to a fatal effect on the quality of the water. In the state of the water, the water is absorbed into the aggregate when the pump is pumped in the case that the water-repellent layer applied with the circulating fine aggregate having a large absorption rate is not hardened. Slump lowering and pump pumping property are adversely affected, and in the state where the water-retaining material layer is hard, shrinkage cracking occurs due to the discharge of pore water, which affects the strength and the resistance to freeze-thawing resistance, thereby lowering the durability. Will act as.
인공경량골재는 다공질의 구형입자로서 콘크리트구조물의 경량화에 사용되는 자재로 알려져 있다. 하지만 인공경량골재는 경량화에 필요한 다공성을 지님과 동시에 콘크리트 강도 유지에 필요한 압축강도와 모르타르와의 부착력이 우수한 특성을 가지고 있다.
Artificial lightweight aggregate is a porous spherical particle is known as a material used to reduce the weight of concrete structures. However, artificial lightweight aggregates have excellent porosity for weight reduction and excellent compressive strength and adhesion with mortar to maintain concrete strength.
본 발명에서 사용되는 인공경량단열골재는 폐유리로부터 재생된 것으로서 폐유리는 총 3단계를 거친 분쇄 과정을 거쳐 밀가루와 같은 미립분이 된다. 분쇄 과정을 거친 후 원료에 소량의 발포제를 혼입하는데, 이 때 발포제의 혼입률에 따라서 생산되는 인공경량골재의 비중이 결정될 수 있다. 발포제를 혼입하여 원료를 가열하면 먼저 수분이 증발하여 건조상태가되고 700~900℃ 정도에서 소성된다. 이때 발포제의 영향으로 인하여 서로 유기체화 된 원료의 내부에 공극이 생기며 표면이 연화되면서 용융성의 유리질 상의 표면을 형성한다. 소성이 끝난 후 냉각 과정을 거치며 만들어진 인공경량골재를 분급 과정에 의하여 여러 입도를 가진 인공경량골재로 제조하게 된다.
The artificial lightweight thermal insulation aggregate used in the present invention is recycled from waste glass, and the waste glass becomes fine particles such as flour through a grinding process in a total of three steps. After the grinding process, a small amount of blowing agent is mixed into the raw material, and the specific gravity of the artificial light aggregate produced according to the mixing rate of the blowing agent may be determined. When the raw material is heated by mixing the blowing agent, the moisture is first evaporated to become dry and then fired at about 700 to 900 ° C. At this time, due to the influence of the blowing agent, voids are formed inside the raw materials organicized with each other, and the surface is softened to form the molten glassy surface. After firing, the artificial light weight aggregate made by cooling process is manufactured into artificial light weight aggregates having various particle sizes by classification process.
특히, 본 발명에서 사용되는 인공경량골재의 표면건조 포화상태의 비중은 0.8~0.9, 흡수율 3~4%, 단위용적질량 300~500 kg/m3인 것을 사용하는데, 이는 보통 잔골재의 표면건조 포화상태의 비중 2.5~2.65에 비해 약 30% 정도이며, KS F 2534에서 규정한 구조용 경량골재의 기준인 1,120 kg/m3 의 약 40% 정도로 나타나 구조체의 자중감소에 효과적인 것이다.
In particular, the specific gravity of the surface dry saturation state of the artificial light weight aggregate used in the present invention is 0.8 ~ 0.9, the absorption rate is 3 ~ 4%, the unit volume mass of 300 ~ 500 kg / m 3 , which is usually the surface dry saturation of fine aggregate from about 30% compared with the specific gravity 2.5 ~ 2.65 in the state, it effectively to a standard of 1,120 kg / m of about 40% shown so reducing the weight of the structure of three of the structural lightweight aggregate specified in KS F 2534.
본 발명에 사용되는 상기 인공경량골재의 사용량은 전체 보수재 조성물에 대하여 8~10중량부를 사용하는 것이 효과적이며, 상기 인공경량골재를 상기 범위보다 적게 사용하는 경우에는 자중감소 효과가 저하되며, 상기 범위를 초과하는 경우에는 압축강도가 감소하는 문제점이 있다.
The amount of the artificial light weight aggregate used in the present invention is effective to use 8 to 10 parts by weight with respect to the total water refining composition, and when using the artificial light weight aggregate less than the above range, the self-weighting effect is lowered, the range If it exceeds, there is a problem that the compressive strength is reduced.
플라이애쉬는 시멘트의 수화생성물인 수산화칼슘과 반응하여 경화성을 발휘하지만 그 반응속도는 상당히 늦고 수화발열량도 적다. 따라서 플라이애쉬 첨가 콘크리트는 수화열에 의한 균열을 방지할 목적으로 댐과 같은 매스콘크리트 공사나 교량공사등에 많이 이용하고 있다.
Fly ash reacts with calcium hydroxide, a hydration product of cement, to exhibit curability, but its reaction rate is considerably slower and the amount of hydration is lower. Therefore, fly ash-added concrete is frequently used in mass concrete and bridge construction such as dams in order to prevent cracks caused by hydration heat.
또한, 지하수나 바닷물에 함유된 황산염에 의해 팽창 부식되는 일반콘크리트에 플라이애쉬를 첨가하면 시멘트량이 상대적으로 감소하고 포졸란반응으로 시멘트 중의 수산화칼슘 량이 감소하여 황산염과의 반응으로 생기는 에트링카이트의 생성량이 감소됨으로써 에트링가이트의 생성에 따른 팽창압이 완화되기 때문에 황산염에 의한 부식성이 감소하게 된다.
In addition, when fly ash is added to general concrete that is expanded and corroded by sulfates contained in groundwater or seawater, the amount of cement is relatively decreased, and the amount of calcium hydroxide in cement is reduced by the pozzolanic reaction, thereby reducing the amount of ettringite produced by the reaction with sulfate. As a result, the expansion pressure due to the production of etringite is alleviated, thereby reducing the corrosiveness caused by sulfate.
뿐만 아니라, 포졸란 반응으로 인하여 생성된 칼슘실리게이트 수화물이나 칼슘알루미네이트 수화물을 생성하여 경화체 내의 모세관 공극을 막아 물의 이동을 억제함으로써 침투성이 감소하게 되므로 플라이애쉬를 사용한 콘크리트의 수밀성은 초기재령에서 보다 장기재령에서 현저히 향상되는 것으로 알려져 있다.
In addition, the water-tightness of concrete using fly ash reduces the permeability by forming calcium silicate hydrates or calcium aluminate hydrates produced by the pozzolanic reaction, blocking the capillary pores in the cured body and inhibiting the movement of water. It is known to significantly improve at age.
따라서, 본 발명의 보수재 조성물에 사용되는 플라이애쉬의 사용량은 3~5중량부를 사용하는데, 상기 조성중량부 미만이면 균열방지, 부식성 및 수밀성이 저하되고, 상기 조성중량부를 초과하면 점도 증가, 유동성 저하 및 균열이 발생할 수 있다.
Therefore, the amount of fly ash used in the repairing material composition of the present invention is used in 3 to 5 parts by weight, if less than the composition parts by weight, the crack prevention, corrosion and water-tightness is lowered, and when the composition parts by weight is exceeded, the viscosity is increased, fluidity is lowered And cracking may occur.
PVA 분말수지는 폴리머중 강도가 매우 큰 것으로 결합력 및 내부 장력을 보완하기 위하여 첨가한다. 상기 PVA 분말수지는 미립자 상태로 분산되어 잔골재 및 시멘트 겔 또는 미수화 시멘트 입자 혼합물 표면에 침착함에 따라 시멘트 수화에 따른 세공용적의 감소 및 수분의 증발에 따른 모세관수의 감소에 의해 모세관 공극을 메운 상태로 응집되므로 최종적으로 연속된 폴리머 필름의 망상구조를 형성하게 된다.
PVA powder resin is very high in the polymer and is added to compensate for bonding strength and internal tension. As the PVA powder resin is dispersed in fine particles and deposited on the surface of the fine aggregate and the cement gel or unhydrated cement particle mixture, the capillary pores are filled by the reduction of the pore volume due to hydration of the cement and the decrease of the capillary water due to the evaporation of moisture. As a result of aggregation, the network structure of the continuous polymer film is finally formed.
이와 같은 PVA 분말수지의 거동은 콘크리트의 성질에 영향을 주는데, 굳지 않은 상태에서는 수성 폴리머 디스퍼젼으로 되는 특성에 의해 친수 콜로이드적 성질에 인해 워커빌리티(시공 난이도), 공기 연행성, 블리딩이나 재료분리에 의한 저항성, 보수성 등이 개선되고, 경화 후에는 시멘트 수화물과 폴리머 필름상이 서로 일체가 된 Comatrix 형성에 의해 방수성 또는 수밀성, 기밀성, 내약품성, 내동결융해성 등이 개선되며 인장강도나 휨강도, 신장능력, 내마모성 등의 기계적 성질이 개선된다. 따라서, 본 발명의 보수재 모르타르 조성물에 상기 PVA 분말수지를 적정량 첨가함으로써 기존 콘크리트 보다 매우 높은 강도 발현 및 내구성 개선효과를 나타낼 수 있다.
The behavior of PVA powdered resins affects the properties of concrete, and in the unsolidified state, it becomes aqueous polymer dispersion, which is a function of workability, air embrittlement, bleeding or material separation due to hydrophilic colloidal properties. Resistance, water retention, etc. are improved, and after curing, the comatrix formed by cement hydrate and polymer film is integrated to improve waterproofness, watertightness, air tightness, chemical resistance, freeze-melting resistance, etc., and tensile strength, bending strength, elongation ability. Mechanical properties such as wear resistance are improved. Therefore, by adding an appropriate amount of the PVA powder resin to the repair material mortar composition of the present invention it can exhibit a very high strength expression and durability improvement effect than conventional concrete.
상기 PVA 분말수지는 보수재 모르타르 조성물에 대하여 1.65~2.45중량부 사용할 때, 전술한 효과들을 가장 바람직하게 나타낼 수 있는데, 상기 범위 보다 적으면 콘크리트의 강도가 충분하게 나타나지 못하게 되고, 반대로 상기 범위 보다 많으면블리딩으로 인하여 폴리머가 표면으로 떠오르게 되어 표면만 경화되는 현상이 발생되기 때문에 전술한 비율로 첨가하는 것이 바람직하다.
When the PVA powder resin is 1.65 ~ 2.45 parts by weight based on the repair mortar composition, the above-described effects can be most preferably exhibited. If the PVA powder resin is less than the above range, the strength of the concrete will not appear sufficiently. Due to this phenomenon, the polymer rises to the surface, so that only the surface is hardened.
조강속경제는 상기 보수재 모르타르 조성물의 경화를 촉진하기 위하여 사용하는 것으로 초기강도를 부여해서 조성물의 처짐 현상을 방지한다. 조강속경제로서는 비정질 C12A7계 또는 CSA계 시멘트 광물계 분말속경제, 알루민산나트륨을 주성분으로 하는 무기염계 분말속경제, 실리케이트 및 알루미네이트를 주재로 한 액상 속경제, 알칼리프리계 액상 속경제 등을 사용할 수 있지만, 비정질 C12A7계 조강속경제로서 분말도는 5,500-6,000㎠/g, 응결 시간은 초결 33분, 종결 60분을 나타내는 것을 사용하는 것이 바람직하다.
The crude steel economy is used to promote the hardening of the repair mortar composition to impart initial strength to prevent the composition from sagging. As a crude steel economy, amorphous C12A7 or CSA cement mineral powder economy, inorganic salt powder economy based on sodium aluminate, liquid economy based on silicate and aluminate, alkali-free liquid economy Although it is possible to use an amorphous C12A7-based roughening economy, it is preferable to use a powder having a density of 5,500-6,000 cm 2 / g, a solidification time of 33 minutes for a first connection, and 60 minutes for a termination.
본 발명의 보수재 모르타르 조성물에 사용되는 조강속경제는 초기강도 발현,빠른 경화 및 부착성능을 위해서 전체 조성물에 대하여 0.8-1.5중량부 사용하는 것이 바람직하다.
The crude steel speed economy used in the repair mortar composition of the present invention is preferably 0.8 to 1.5 parts by weight based on the total composition for the initial strength expression, rapid curing and adhesion performance.
본 발명에 사용되는 팽창재는 비중이 2.86, 분말도가 3,700㎠/g을 가지는 칼슘-설포-알루미네이트(Calsium-Sulpho-Aluminate) 팽창제로서 건조수축에 의한 균열이 발생하는 것을 방지하기 위해 사용하는 바, 그 사용량은 2.0-2.5중량부 사용하는 것이 바람직하다.
The expansion material used in the present invention is a calcium-sulpho-aluminate expander having a specific gravity of 2.86 and a powder degree of 3,700 cm 2 / g, which is used to prevent cracking caused by dry shrinkage. The use amount thereof is preferably 2.0 to 2.5 parts by weight.
또한, 본 발명에는 콘크리트의 균열방지 및 인성증대를 위해 섬유보강재가 첨가되며, 상기 섬유보강재는 0.5~1.0중량부 사용되는데, 상기 섬유보강재의 함량이 0.5중량부 미만이면 섬유보강재의 첨가에 따른 효과가 미미하고, 1중량부를 초과하게 되면 콘크리트 비빔시 섬유보강재가 서로 엉켜 잘 믹싱되지 않아 물-시멘트비가 증가하게 되어 블리이딩이 증가하고 강도 및 내구성 저하현상이 발생되는 등의 문제점이 발생할 수 있기 때문에 상기 범위로 포함하는 것이 바람직하다.
In addition, the present invention is added to the fiber reinforcement to prevent cracking and increase the toughness of the concrete, the fiber reinforcement is used 0.5 to 1.0 parts by weight, if the content of the fiber reinforcement is less than 0.5 parts by weight effect of the addition of the fiber reinforcement When it is insignificant and exceeds 1 part by weight, the fiber reinforcement materials are entangled with each other during the concrete bibim, so that the water-cement ratio is increased, resulting in increased bleeding and deterioration in strength and durability. It is preferable to include in the said range.
상기 섬유보강재로는 유리섬유, 탄소섬유, 강섬유(steel fiber) 및 아라미드 섬유(aramid fiber)로 이루어진 군에서 선택된 하나 또는 둘 이상이 혼합된 것을 사용하는 것이 바람직하나, 그 중 보수재 조성물의 중량저감을 감안할 때, 탄소섬유가 가장 바람직하며, 직경 5~20㎛의 탄소섬유를 0.5~1.0중량부 사용하는 것이 바람직하다.
As the fiber reinforcing material, it is preferable to use a mixture of one or two or more selected from the group consisting of glass fiber, carbon fiber, steel fiber, and aramid fiber. In view of this, carbon fibers are most preferred, and 0.5 to 1.0 parts by weight of carbon fibers having a diameter of 5 to 20 µm is preferably used.
응결지연제로는 천연석고, 무수석고, 이수석고, 티탄석고로부터 선택되는 석고를 사용할 수 있으며, 비중은 2.96으로 색상은 하얀색을 채택하하고, 사용량은 0.3-1.0중량부 사용하는 것이 바람직하다.
As a coagulation retardant, gypsum selected from natural gypsum, anhydrous gypsum, dihydrate gypsum and titanium gypsum can be used. The specific gravity is 2.96, the color is white, and the amount of use is preferably 0.3-1.0 parts by weight.
한편, 본 발명의 보수재 모르타르 조성물은 분산성을 증대시키기 위해 유동화제를 첨가하게 되는데, 유동화제는 유동성을 유지시키고 타설시에 시공성을 향상시키는 역할을 하고, 배합수의 사용량을 줄여줌으로써 강도 증진 및 내구성 증진에 기여하게 되며, 상기 유동화제는 폴리칼본산계 분말, 멜라민계 분말 및 나프탈렌계 분말로 이루어진 군에서 선택된 하나 또는 둘 이상의 혼합물을 사용하는 것이 바람직하나, 이에 한정되는 것은 아니며 콘크리트 분야에서 사용되고 있는 유동화제는 모두 사용가능하며, 그 중에서도 특히 폴리칼본산계 또는 멜라민계 분말을 사용하는 것이 가장 바람직하다.
On the other hand, the repair material mortar composition of the present invention is to add a fluidizing agent to increase the dispersibility, the fluidizing agent serves to maintain the fluidity and improve the workability during pouring, and to increase the strength by reducing the amount of the blending water To contribute to the durability enhancement, the fluidizing agent is preferably used one or two or more mixtures selected from the group consisting of polycarboxylic acid-based powder, melamine-based powder and naphthalene-based powder, but is not limited thereto, and is used in the field of concrete Both glidants can be used, and among them, polycarboxylic acid-based or melamine-based powders are particularly preferred.
상기와 같은 유동화제는 0.03~0.05중량부 첨가되는 것이 바람직하며, 이러한 범위 내에서 첨가됨에 따라 물-시멘트비를 최소화할 수 있어 강도 및 내구성능을 개선할 수 있을 뿐만 아니라 작업성도 향상시켜 현장 시공시 작업인원을 줄일 수 있다.
It is preferable that the fluidizing agent is added in an amount of 0.03 to 0.05 parts by weight, and as it is added within this range, water-cement ratio can be minimized, thereby improving strength and durability, as well as improving workability, and in the field construction. Reduced workforce
증점제는 본 발명의 보수재 모르타르 조성물의 슬러리 상태에서 시공이 용이한 점성을 유지하도록 하며, 시공후 초기 결합력을 부여하여 시공면에서 수화성 결합재의 수화결합이 진행되기 전에 보수피복층을 안정하게 하여 처짐을 방지하고 일정 두께의 층을 유지하도록 하기 위해 사용한다.
The thickener keeps the viscosity easy to install in the slurry state of the repair mortar composition of the present invention, and imparts initial binding force after construction to stabilize the repair coating layer before hydration bonding of the water-soluble binder in the construction surface. To prevent and maintain a layer of constant thickness.
본 발명의 조성물에는 유기 증점제로 메틸 셀룰로즈계, 폴리비닐 아세테이트 에서 1종 이상 사용하며, 그 사용량은 0.35-0.45중량부 사용한다. 증점제의 첨가량이 너무 많으면 점성이 높아져 뿜칠 작업시에 펌프의 막힘 현상이 발생할 수 있고,마감 과정에서 모르타르가 눌러 붙는 형상이 발생하여 마감이 어려워질 수 있다.
In the composition of the present invention, at least one of methyl cellulose and polyvinyl acetate is used as the organic thickener, and the amount thereof is 0.35-0.45 parts by weight. If the amount of the thickener is added too much, the viscosity may increase, causing clogging of the pump during the spraying operation, and the shape of the mortar may be pressed during the finishing process, thereby making it difficult to finish.
본 실시예에 따른 친환경 유무기 하이브리드 보수재 모르타르 조성물을 표 1과 같은 배합비로 제작하여 압축강도, 휨강도, 부착강도, 염소이온투수저항성에 대해 시험하였으며, 압축강도는 KS L 5105 '수경성 심네트 모르타르의 압축강도시험방법'에 의하여 측정하였고, 부착강도는 KS L 5216 '팽창질석을 사용한 단열시멘트'의 접착시험법에 의하여 측정하였으며, 휨강도는 KS F 2408 '콘크리트의 휨강도 시험방법'에 의해 측정하였고, 염소이온투수저항성은 KS F 2737 '콘크리트의 염소이온 침투성 시험방법'에 의하여 측정하였다. 그 결과는 표 2과 같다.
Environmentally friendly organic-inorganic hybrid repair material mortar composition according to this embodiment was prepared in the mixing ratio as shown in Table 1 and tested for compressive strength, flexural strength, adhesion strength, chlorine ion permeability resistance, the compressive strength of KS L 5105 'hydraulic simnet mortar Compressive strength test method was measured, and the bond strength was measured by the adhesion test method of KS L 5216 'Insulated Cement Using Expanded Vermiculite', and the flexural strength was measured by KS F 2408 'Test method for the flexural strength of concrete'. Chlorine ion permeability resistance was measured by KS F 2737 'Concrete Chlorine Ion Penetration Test Method'. The results are shown in Table 2.
상기 물성 결과로부터, 본 실시예에 따른 친환경 유무기 하이브리드 보수재 모르타르 조성물은 강도 및 내구성이 우수함을 알 수 있다.
From the results of the physical properties, it can be seen that the environmentally friendly organic-inorganic hybrid repair material mortar composition according to this embodiment is excellent in strength and durability.
한편, 본 발명의 제2측면으로서, 상기 친환경 유무기 하이브리드 보수재 모르타르 조성물을 준비하는 단계와; 콘크리트 구조물의 보수 바탕면의 이물질을 제거하는 단계와; 이물질이 제거된 콘크리트 구조물의 보수 바탕면에 상기 친환경 유무기 하이브리드 보수재 모르타르 조성물을 뿜칠 또는 미장에 의해 타설하여 시공하는 단계와; 상기 친환경 유무기 하이브리드 보수재 모르타르 조성물 시공 후, 표면 마감 및 보호재를 도포, 양생하는 단계를 포함하여 구성되는 친환경 유무기 하이브리드 보수재 모르타르 조성물을 이용한 콘크리트 보수공법을 기술구성의 특징으로 한다.
On the other hand, as a second aspect of the present invention, preparing an environmentally friendly organic-inorganic hybrid repair material mortar composition; Removing foreign matter from the repair base surface of the concrete structure; Constructing and spraying the environment-friendly organic-inorganic hybrid repair material mortar composition by spraying or plastering on the repair base surface of the concrete structure from which foreign substances have been removed; After the construction of the environmentally friendly organic-inorganic hybrid repair material mortar composition, a concrete repair method using an environmentally-friendly organic-inorganic hybrid repair material mortar composition comprising the step of applying, curing the surface finish and protective material is characterized by the technical configuration.
이상과 같이, 본 발명의 바람직한 실시예를 참조하여 설명하였지만, 해당 기술분야에서 통상의 지식을 가진 자라면 하기의 특허 청구의 범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.As mentioned above, although it demonstrated with reference to the preferred embodiment of this invention, those of ordinary skill in the art can carry out this invention within the range which does not deviate from the thought and range of this invention described in the claim below. It will be understood that various modifications and changes can be made.
Claims (2)
35-40 parts by weight of hydraulic cement having a powder degree of 3,000-3,500 cm 2 / g and at least one selected from among portland cement, white portland cement, alumina cement, crude steel portland cement, and super rough steel cement; 45-50 parts by weight of circulating fine aggregate having a water absorption of less than 5%, an absolute dry density of 2.3 g / cm 3 or more, and a particle size of 0.1 to 1.2 mm of 60 to 70% by weight; 8 to 10 parts by weight of artificial light weight aggregate having a specific gravity of 0.8 to 0.9 of surface dry saturated state, 3 to 4% of water absorption, and 300 to 500 kg / m 3 of unit volume mass; 3 to 5 parts by weight of fly ash; 1.65-2.45 parts by weight of PVA powder resin; 0.8-1.5 parts by weight of amorphous C 12 A 7- based crude steel economy having a powder degree of 5,500-6,000 cm 2 / g; 2.0-2.5 parts by weight of a calcium-sulpho-aluminate expander having a specific gravity of 2.86 and a powder degree of 3,700 cm 2 / g; 0.5 to 1.0 parts by weight of carbon fiber reinforcement with a diameter of 5 to 20 µm; 0.3-1.0 parts by weight of a coagulation delay agent selected from natural gypsum, dihydrate gypsum, hemihydrate gypsum or anhydrous gypsum; 0.03-0.05 parts by weight of polycarboxylic acid or melamine fluidizing agent; 0.35-0.45 parts by weight of one or more organic thickeners selected from methyl cellulose or polyvinylacetate; 25-50 parts by weight of water; environmentally friendly organic-inorganic hybrid repair material mortar composition comprising a
In the concrete repair method, preparing an environmentally friendly organic-inorganic hybrid repair material mortar composition according to claim 1; Removing foreign matter from the repair base surface of the concrete structure; Constructing and spraying the environment-friendly organic-inorganic hybrid repair material mortar composition by spraying or plastering on the repair base surface of the concrete structure from which foreign substances have been removed; After the construction of the environmentally friendly organic-inorganic hybrid repair material mortar composition, concrete repair method using an environmentally-friendly organic-inorganic hybrid repair material mortar composition comprising the step of applying, curing the surface finish and protective material.
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| KR101424530B1 (en) * | 2014-01-28 | 2014-08-08 | 씨엠피엠건설 (주) | Composition for grouting and method for injecting the same |
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| KR101424530B1 (en) * | 2014-01-28 | 2014-08-08 | 씨엠피엠건설 (주) | Composition for grouting and method for injecting the same |
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| KR101709240B1 (en) * | 2016-06-20 | 2017-02-23 | (주)대우건설 | Mortar composition for recovering cross section of eco-friendly cement with sulphate resistance |
| KR101744067B1 (en) | 2017-02-13 | 2017-06-07 | (주)피엠씨 | Repair method of tall building and apartment’s exterior wall having crack and pitting |
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| CN108439856A (en) * | 2018-05-16 | 2018-08-24 | 云南宇耐科技有限公司 | A kind of anti-water hardening compound additive of the long-acting modification of ardealite and preparation method thereof |
| CN110950618A (en) * | 2018-09-27 | 2020-04-03 | 江苏吉邦材料科技有限公司 | Gypsum mortar with surface capable of receiving light |
| CN112321184A (en) * | 2020-11-16 | 2021-02-05 | 江苏金海宁新型建材科技有限公司 | Preparation method of recycled aggregate for prefabricated building |
| CN114855705A (en) * | 2021-06-21 | 2022-08-05 | 韩元元 | Method for treating leakage of water engineering |
| CN113582652A (en) * | 2021-08-13 | 2021-11-02 | 武汉市市政建设集团有限公司 | Conductive quick-hardening repairing material and preparation method thereof |
| KR102578767B1 (en) * | 2022-09-06 | 2023-09-13 | 한라시멘트주식회사 | Eco-friendly Low-carbon Concrete Composition Using High-early-strength Slag Cement |
| KR102644576B1 (en) * | 2022-12-30 | 2024-03-08 | 건양대학교산학협력단 | Multifunctional Cement Mortar Composition and the Fabrication Method of Cement Composites Combined with Carbon Fiber |
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