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Shear Performance of RC Beams Using Ductile Fiber Reinforced Cementitious Composite (DFRCC)

고인성 섬유 시멘트 복합재료를 사용한 RC보의 전단보강효과

  • Received : 2014.08.11
  • Accepted : 2014.09.11
  • Published : 2014.09.30

Abstract

This paper presents the results of experimental investigations on the shear failure behaviors of reinforced concrete beams using ductile fiber reinforced cementitious composite (DFRCC). Total 10 RC beams of $150{\times}300{\times}1,000mm$ size were tested by 4-point bending under the displacement control. The main parameters of the experiment are surface treatment by grinding and preloading to the cracking point in the repair process. The load-displacement curves, diagonal tension cracking load, flexural cracking load, and shear strength were obtained. The test results showed that the DFRCC can be used effectively for restoring the shear strength approximately 99% to the original value under the condition that the appropriate thickness and surface treatment like grinding are assured. For further research, the specimens taken from real deteriorated structures will need to be tested after being repaired with DFRCC.

Keywords

DFRCC;Diagonal tension crack;Repair;Shear failure behavior;Shear strength

References

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Acknowledgement

Supported by : 창원대학교