Initial Strength Characteristics of Cementitious Gypsum-Containing Coal Gasification Slag Powder Replacement Cement Mortar

석고 혼입 석탄가스화 슬래그 미분말 치환 시멘트 모르타르의 초기강도 특성

In this study, compressive strength was measured to evaluate the initial strength of cement mortar substituted with coal gasification slag containing desulfurized gypsum, and the reactivity of desulfurized gypsum was confirmed. In order to improve the reactivity, 2% gypsum mixed type and gypsum unfedged type specimens were fabricated and the influence of desulfurization gypsum on compressive strength of coal gasification slag and blast furnace slag fine powder replacement cement mortar was compared and confirmed. As a result of the experiment, it was confirmed that the initial compressive strength of the specimen containing the desulfurized gypsum was improved at the initial stage.