Fundamental Characteristics of High Strength SCMs Concrete According to Mixing Ratio of FA and BS

FA 및 BS의 혼합비율 변화에 따른 3성분계 고강도 콘크리트의 기초적 특성

  • 김민상 (청주대학교 건축공학과) ;
  • 문병룡 (청주대학교 건축공학과) ;
  • 이재진 (청주대학교 건축공학과) ;
  • 박성배 (청주대학교 건축공학과) ;
  • 한민철 (청주대학교 건축공학과) ;
  • 한천구 (청주대학교 건축공학과)
  • Published : 2017.05.17

Abstract

With the recent development in construction industry, industrial by-products fly ash(FA) and blast furnace slag(BS) have been used in large quantities as an alternative to cement, as a solution for environmental problems and resource exhaustion. This study analyzed the basic characteristics according to the changes in replacement ratio and mixing ratio of FA and BS in high strength SCMs concrete, from which in turn it sought to find the optimal mixing ratio for high strength concrete The results showed that in unhardened concrete the more the replacement ratio and FA mixing ratio increases the slump flow will increase while amount of air decreases, and setting time is delayed. In hardened concrete the more the replacement ratio and FA mixing ratio increases the more the overall compression strength decreases, but until 28 days of material age the larger of the BS ratio displayed the best compression strength.