순환유동층 보일러애시를 활용한 폴리머 보수 모르타르의 역학적 특성에 대한 연구
A Study on the Mechanical Properties of Polymer Repair-Mortars with CFBC Ash
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초록
순환유동층 보일러애시(CFBC ash)는 매년 발생량이 증가하고 있으며, 대부분 활용성이 제한되어 매립, 폐기되고 있는 실정이다. 순환유동층 보일러애시의 화학조성 주성분은 SiO2, CaO, CaSO4로써, 물과 반응하여 시멘트와 유사한 자기수경성을 가지고 있다. 본 연구에서는 순환유동층 보일러애시의 자기수경성을 활용하여, 폴리머 혼입 보수 모르타르를 개발하기 위한 최적배합을 도출하고자 하였다. 폴리머 혼입 보수 보르타르 개발을 위해 순차적으로 3 Case의 배합을 설정하고 기초 물성을 확인하였다. 그 결과, 순환유동층 보일러애시에 실리카흄10% 혼입과 폴리머 1.0% 혼입, 팽창재 3.5% 혼입에서 최적의 결과를 얻을 수 있었다.
Abstract
The amount of generated Circulating Fluidized Bed Combustion ash (CFBC ash) is annually increasing, but most CFBC ash has been landfilledand discarded due to the limited utilization. The major chemical compositions of CFBC ash are SiO2, CaO and CaSO4, which could form hydrationproducts by reacting with water as self-cementing property such as cement. The purpose of the this study is to derive the optimal mix proportionsto improve polymer-modified mortar with the use of CFBC ash which has the self-cementing property. In order to develop polymer-modified mortar,three mix proportions were determined, and fundamental properties for the mixtures were obtained. As a result, the optimal mixture containing 10percent of silica fume, 1.0 percent of polymer and 3.5 percent of expansive additives were proposed in this study.
참고문헌 (13)
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