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A Study on the Factors Affecting the High Fluid Mortar Containing Ground Granulated Blast-furnace Slag

고로슬래그 미분말을 함유한 고유동 모르터의 유동성상에 미치는 영향 요인에 관한 연구

  • 김재훈 (한양대학교 대학원 건축공학과) ;
  • 윤상천 (경주대학교 건설환경공학부) ;
  • 지남용 (한양대학교 건축공학부)
  • Published : 2002.12.01

Abstract

High fluid concrete unlike OPC concrete is made with various material, and the phase of fresh concrete is considerably different. In order to understand fluidity phase and mix properties of high fluid concrete, concrete is required to access as suspension structure which consists of aggregate and paste. The focus of this paper is to analyze the test results and quantify the effect of mix proportions of mortar and fineness modulus of sand on the properties of fresh mortar. The effect of water-binder ratio. sand-binder ration. contents of ggbs (by mass of total cementitious materials). and various contents of water reducing agent on the yield stress and plastic viscosity of the mix is studied. Based on the experimental results, the fellowing conclusions can be drawn: (1) The mixing time needed for high fluid mortar was approximately two times more than that of ordinary portland mortar. (2) The fluidity phase of mortar could be explained by yield stress of mix and the fluidity of mortar. (3) As the content of ggbs increased, yield stress of mortar was decreased and plastic viscosity of it was increased. (4) For the high fluid mortar, it was appeared that sand-binder ratio should be below 1.5.

Keywords

References

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