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Optimal Mixture Proportion for High Performance Concrete Incorporating Ground Granulated Blast furnace Slag

  • Choi Jae-Jin (Div. of construction and Environmental Engineering, Kongju National University) ;
  • Kim Eun-Kyum (Dept. of civil Engineering, Seoul National University of Technology) ;
  • Yoo Jung-Hoon (Rural Research Institute, Korea Agricultural & Rural infrastructure Corporation)
  • Published : 2005.06.01

Abstract

In this study, a mix design for self compacting concrete was based on Okamura's method and concrete incorporated just a ground granulated blast furnace slag. Replacement ratio of slag is in the range of $20-80\%$ of cement matrix by volume. For the optimal self compactability in mixture incorporating ground granulated blast furnace slag, the paste and mortar tests were first completed. Then the slump flow, elapsed time of 500mm slump flow, V funnel time and filling height by U type box were conducted in concrete. The volume of coarse aggregate in self compacting concrete was in the range of $50-60\%$ to the solid volume percentage of coarse aggregate. Finally, the compressive and splitting tensile strengths were determined in the hardened self compacting concrete incorporating ground granulated blast furnace slag. From the test results, it is desirable for self compacting concrete that the replacement of ground granulated blast furnace slag is in the range of $40-60\%$ of cement matrix by volume and the volume of coarse aggregate to the solid volume percentage of coarse aggregate with a limit of $55\%$.

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