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

1. 서 론
 2. 부재 제작 및 부착응력 실험
  2.1 실험개요
  2.2 실험 시편
  2.3 실험계측 및 파괴형상
 3. 부착응력과 슬립 관계
  3.1 국부 부착응력-슬립 관계
  3.2 인발력, 계면파괴에너지 및 부착응력
 4. 단순부착응력과 슬립 관계
 5. 결론
 ACKNOWLEDGMENT
 REFERENCES

• 유준상(가톨릭관동대학교 토목공학과 석사과정) | Yoo Jun-Sang
• 유승운(가톨릭관동대학교 토목공학과 교수) | Yoo Seung-Woon Corresponding author