석고 혼입이 석탄가스화 슬래그의 활성화에 미치는 영향

Effect of Gypsum Mixture on Activation of Coal Gasification Slag

  • 조현서 (한국교통대학교 건축공학과) ;
  • 김민혁 (한국교통대학교 건축공학과) ;
  • 이건철 (한국교통대학교 건축학부) ;
  • 조도영 (한서대학교 산학협력단)
  • 발행 : 2019.05.15

초록

In this study, the initial strength reduction of coal gasification slag fine powders was confirmed through previous studies when used in cement formulations. It is also confirmed that the blast furnace slag is mixed with cementitious coal blast furnace slag, which is similar to coal gasification slag, to incorporate gypsum in order to prevent initial strength deterioration. In order to analyze the reactivity of coal gasification slag by desulfurization gypsum, the formation of hydrates and their reactivity at early ages were confirmed by electron microscope. In order to confirm the reactivity, the gypsum samples were prepared with unincorporated type and 2% mixed type. Experimental results showed that 2% of the desulfurized gypsum specimens reacted more actively than the uninjured ones.

키워드