시멘트 혼합재로의 전처리 제지애쉬 적용가능성 연구
A Study on Pretreated Paper Sludge Ash for Cement Admixture
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초록
제지산업은 다량의 산업부산물을 배출하고 있으며, 제지애쉬 발생량도 증가하고 있다. 본 연구에서는 제지애쉬를 시멘트 혼합재로 사용하기 위해서 수화수를 사용하여 전처리 하였다. 전처리 제지애쉬와 석고를 혼합하여 혼합재를 제조하였으며, 이후 시멘트를대체하여 사용하였다. 제지애쉬 혼합시멘트는 제지애쉬 함량에 따라 물성이 변화하였으나, 10% 이하 사용시에는 기존 OPC와 동등물성이 발현되었다. 이때 압축강도는 수화물 중 Ca(OH)2의생성량과도 일정 상관성을 나타내었으며, 3일 강도는 Ca(OH)2 함량이증가할수록, 28일 강도는 감소할수록 압축강도가 증가하였다.
Abstract
Abstract Paper industry discharges many by-products and quantity of PSA (Paper sludge ash) has been increased. In this study, hydration water was added to PSA for use as cement admixture. PSA with added water was mixed with anhydrite and this mixture was used as cement substitute. Physical properties of PSA cement were changed by contents of PSA, but PSA cement containing PSA less than 10% had similar properties to those of OPC. Compressive strength of PSA cement mortar had a certain relationship with Ca(OH)2 content. Compressive strength at 3 days increased, as Ca(OH)2 content increased. However, the strength at 28 days increased, as Ca(OH)2 content decreased.
참고문헌 (13)
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