A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Water-repellent Admixture for Reducing Shrinkage Binder Composition for Repair Mortar with the Chemical Resistance Comprising the Admixture Dry Mortar Composition Comprising the Binder and Concrete Repair Method Using the Mortar
The present invention relates to a water-repellent shrinkage reduction admixture capable of improving water repellency and dry shrinkage reduction performance when being incorporated into cement mortar, a bonding composition for chemical resistant cross-section repair mortar preferably including the admixture, a dry mortar composition desirably including the bonding material, and a concrete cross-section repair construction method desirably using the dry mortar. The water-repellent shrinkage reduction admixture according to the present invention has a specific gravity of less than or equal to 2.20 and fineness of 5,500-9,000 cm^2/g by pulverizing and mixing the composition including a dispersing inorganic filler, an anti-aggregation agent, a water repellent agent, and a shrinkage reducing agent in a pulverizer. The bonding composition for chemical resistant cross-section repair mortar according to the present invention generally comprises: 30-80 wt% of Portland cement, 2-10 wt% of rapid hardening cement, 2-8 wt% of water-repellent shrinkage reduction admixture, 3-8 wt% of expansion agent, 2-10 wt% of anhydrous gypsum, 5-40 wt% of blast furnace slag fine powder, and 0.3-3 wt% of alkali sulfate.
본 발명은 시멘트계 모르타르에 혼입될 때 발수성과 건조수축 저감성을 개선할 수 있는 발수형 수축저감 혼화재와 이 혼화재를 바람직하게 포함하는 내화학성 단면보수 모르타르용 결합재 조성물, 이 결합재를 바람직하게 포함하는 건조 모르타르 조성물, 그리고 그 건조 모르타르를 바람직하게 이용한 콘크리트 단면보수공법에 관한 것이다. 본 발명에 따른 발수형 수축저감 혼화재는, 분산용 무기필러, 응집방지제, 발수제, 수축저감제를 포함하는 조성물이 분쇄기에서 분쇄 혼합되어, 비중이 2.20 이하이면서 분말도가 5,500~9,000cm2/g인 것을 특징으로 한다. 본 발명에 따른 내화학성 단면보수 모르타르용 결합재 조성물은, 보통 포틀랜드 시멘트 30~80중량%; 초속경 시멘트 2~10중량%; 발수형 수축저감 혼화재 2~8중량%; 팽창제 3~8중량%; 무수석고 2~10중량%; 고로슬래그 미분말 5~40중량%; 알칼리 설페이트 0.3~3중량%;를 포함하여 조성되는 것을 특징으로 한다.
Water-repellent Admixture for Reducing Shrinkage Binder Composition for Repair Mortar with the Chemical Resistance Comprising the Admixture Dry Mortar Composition Comprising the Binder and Concrete Repair Method Using the Mortar
The present invention relates to a water-repellent shrinkage reduction admixture capable of improving water repellency and dry shrinkage reduction performance when being incorporated into cement mortar, a bonding composition for chemical resistant cross-section repair mortar preferably including the admixture, a dry mortar composition desirably including the bonding material, and a concrete cross-section repair construction method desirably using the dry mortar. The water-repellent shrinkage reduction admixture according to the present invention has a specific gravity of less than or equal to 2.20 and fineness of 5,500-9,000 cm^2/g by pulverizing and mixing the composition including a dispersing inorganic filler, an anti-aggregation agent, a water repellent agent, and a shrinkage reducing agent in a pulverizer. The bonding composition for chemical resistant cross-section repair mortar according to the present invention generally comprises: 30-80 wt% of Portland cement, 2-10 wt% of rapid hardening cement, 2-8 wt% of water-repellent shrinkage reduction admixture, 3-8 wt% of expansion agent, 2-10 wt% of anhydrous gypsum, 5-40 wt% of blast furnace slag fine powder, and 0.3-3 wt% of alkali sulfate.
본 발명은 시멘트계 모르타르에 혼입될 때 발수성과 건조수축 저감성을 개선할 수 있는 발수형 수축저감 혼화재와 이 혼화재를 바람직하게 포함하는 내화학성 단면보수 모르타르용 결합재 조성물, 이 결합재를 바람직하게 포함하는 건조 모르타르 조성물, 그리고 그 건조 모르타르를 바람직하게 이용한 콘크리트 단면보수공법에 관한 것이다. 본 발명에 따른 발수형 수축저감 혼화재는, 분산용 무기필러, 응집방지제, 발수제, 수축저감제를 포함하는 조성물이 분쇄기에서 분쇄 혼합되어, 비중이 2.20 이하이면서 분말도가 5,500~9,000cm2/g인 것을 특징으로 한다. 본 발명에 따른 내화학성 단면보수 모르타르용 결합재 조성물은, 보통 포틀랜드 시멘트 30~80중량%; 초속경 시멘트 2~10중량%; 발수형 수축저감 혼화재 2~8중량%; 팽창제 3~8중량%; 무수석고 2~10중량%; 고로슬래그 미분말 5~40중량%; 알칼리 설페이트 0.3~3중량%;를 포함하여 조성되는 것을 특징으로 한다.
Water-repellent Admixture for Reducing Shrinkage Binder Composition for Repair Mortar with the Chemical Resistance Comprising the Admixture Dry Mortar Composition Comprising the Binder and Concrete Repair Method Using the Mortar
발수형 수축저감 혼화재, 이를 포함하는 내화학성 단면보수 모르타르용 결합재 조성물과 건조 모르타르 조성물, 그리고 그 건조 모르타르를 이용한 콘크리트 단면보수공법
PARK DONG CHEOL (author) / YANG WAN HEE (author) / LEE JUNG WOO (author) / HWANG MU YEON (author) / YOON BYOUNG KWON (author)
2018-01-08
Patent
Electronic Resource
Korean
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