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무기계 자극제 첨가에 의한 삼성분계 혼합시멘트의 압축강도 증진 효과
박응모,문경주,소양섭 전북대학교 공업기술연구소 2001 工學硏究 Vol.32 No.-
The production and application of blast-furnace slag(BFS) and fly ash(FA) composite portland cement have the following advantages at least; 1. It can reduce the cost of cement production as well as enhance the utilization factor of BFS and FA. 2. The reduction of clinker can decrease air pollution compounds, such as CO_2, SO_2, NOx, during clinker processing. Whereas by increasing the proportion of mixed BFS and FA by a large degree in cement, some side problems would occur, such as a reduction of cement strength, especially at early ages, and setting time retardation Therefore, theis paper aims to investigate and develop by using stimulus agents with anhydrous gypsum, Al_2(SO_4)_3, hydrate lime and limestone, high -strength composite portland cement with large amounts of BFS and fly ash, and to explore for preliminary in fluence of stimulus agents on the composite portland cement. Laboratory investigations on a series of such mixtures have revealed the good early age properties and higher strength at later ages of composite cements by using a proper amount of stimulus agents. Keywords : blast furnace slag, fly ash, inorganic stimulus agents, compressive strength