Simple Bond Stress and Slip Relationship between CFRP Plank and Cast-in-Place DFRCC

탄소섬유 FRP판과 현장타설 고인성섬유보강콘크리트 사이의 단순 부착슬립 관계

  • Yoo, Jun-Sang (Department of Civil Engineering, Catholic Kwandong University) ;
  • Yoo, Seung-Woon (Department of Civil Engineering, Catholic Kwandong University)
  • 유준상 (가톨릭관동대학교 토목공학과) ;
  • 유승운 (가톨릭관동대학교 토목공학과)
  • Received : 2016.02.16
  • Accepted : 2016.03.11
  • Published : 2016.03.31


Bond stress between cast-in-place ductile fiber reinforced cementitious composites and CFRP plank were experimentally analyzed. As failure shape, the mixture of failure between CFRP plank and epoxy, and failure between concrete and epoxy was shown. In case of RFCON from the suggested simple bond slip relationship, the maximum average bond stress was 5.39MPa, the initial slope was 104.09MPa/mm, and the total slip length was 0.19mm. PPCON showed the maximum average bond stress of 4.31MPa, the initial slope of 126.67MPa/mm, and the total slip length of 0.26mm, while RFCON+ appeared to have 8.71MPa, 137.69MPa/mm, 0.16mm. PPCON+ had 6.19MPa maximum average bond stress, 121.56MPa/mm initial slope, and 0.34mm total slip length. To comprehend the behavior of composite structure of FRP and concrete, local bond slip relation is necessary, and thus a simple relation is suggested to be easily applied on hybrid composite system.



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