An Experimental Study on the Rebound Ratios of SFRS with Silica Fume

실리카흄 혼입한 SFRS의 리반운드율에 관한 실험적 연구

  • 손영현 (현대건설 기술연구소 연구원) ;
  • 변형균 (현대건설 기술연구소) ;
  • 조용복 (현대건설 기술연구원 연구원)
  • Published : 1994.10.01

Abstract

In this study, an experiment in the field was performed to analyze the variations of rebound ratios of SFRS with silica fume after fabricating the panels and placing the plain concrete of simulting a base rock with thickness 7cm. And the experimental parameters which are the reinforcing methods(steel fiber, wire mesh), steel fiber contents(0.0%, 0.5%, 0.75%, 1.0%), silica fume contents(0.0%, 10.0%), and the three parts(lower, middle, upper part) were chosen. According to the results of the lower part in this test, the larger the fiber contents are in case of steel fiber reinforced shotcrete, the less the rebound ratios are within the range of 20~35%, compared to the wire-mesh reinforced shotcrete with silica fume content of 10%, and these results are true of the middle and upper part, respectively. In addition, the four-stage phenomena of the rebound of SFRS were estimated on the base of a series of the test results.

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