몽골 플라이애시의 시멘트 혼화재로의 적용에 관한 연구
A Study on the Application of Mongolia Fly Ash as Cement Additive
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초록
본 연구에서는 몽골 플라이애시의 기초물성 및 분쇄과정을 통한 시멘트 혼화재로의 사용가능성을 검토하였다. 몽골 플라이애시는 국내 플라이애시 보다 입자가 컸으며, 구형 입자도 적게 관찰되었다. 몽골 플라이애시의 CaO 함량은 높았으며, 이외 성분은 비슷한 수준이었다. 진동밀 분쇄 후 플라이애시는 7.9 μm까지 작아졌으며, 분말도도 증가하였다. 분쇄 플라이애시를 시멘트와 혼합할경우, 60분 분쇄시 가장 우수한 압축강도 값을 나타내었다. 또한 이들 강도값은 모든 재령에서 OPC 보다도 높은 수준이었다.
Abstract
In this study, characteristics of Mongolian fly ash and the possibility of its use as a cement additive through grinding process were examined. Mongolian fly ash was larger than domestic fly ash and less spherical. The CaO content of Mongolian fly ash was higher than domestic fly ash and the other components were similar. After vibratory milling, the mean particle size of fly ash decreased to 7.9 μm and the blaine increased. When milled fly ash was mixed with cement, it showed the best compressive strength value at 60 min. These strength values were higher than OPC at all curing times.
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