A Study of Blast Furnace Slag Cement of High Early Strength and Replacement Ordinary Portland Cement

조강형 고로 슬래그 시멘트 및 보통 포틀랜드 시멘트 대체용 고로 슬래그 시멘트에 관한 연구

The purpose of this paper was to study of blast furnace slag cement of high early strength and replacement ordinary portland cement. we prepared the specimens of cement and concrete with various mixing proportions of elementary materials. For example, clinker, gypsum(1~10%), fineness $4, 000~6, 000cm^2/g$ of blast furnace slag(30~50%), limestone etc. As a result of this study, fineness $(4, 000cm^2/g)$ blast furnace slag was of used replacement ordinary portland cement and fineness $(6, 000cm^2/g)$ blast furnace slag was of used blast furnace slag cement of high early strength.