FRP (Fiber Reinforced Polymer) reinforced lightweight concrete structures can offer corrosion resistance and weight reduction effect simultaneously, so practical use of the structures may be expected afterwards. But, to construct the concrete structures using lightweight concrete and FRP bar, one of many important things to be previously investigated is to study bond characteristic between the lightweight concrete and the FRP bar. So, bond characteristics between lightweight concrete and two types of GFRP bar (helically deformed GFRP bar and sand coated GFRP bar) were investigated in this study. To do this study, literature review and bond strength test using a number of bond strength specimens were conducted. As a result, it could be seen that the bond strength of helically deformed GFRP bar and sand coated GFRP bar in the lightweight concrete were 49% and 81%, respectively, for the bond strength of steel reinforcement in the normal concrete.

1. 서 론
 2. 이형 GFRP 보강근의 부착강도 특성
  2.1 실험체 제작
  2.2 부착강도 측정실험
  2.3 실험결과 및 문헌조사 결과
 3. 모래 분사형 GFRP 보강근의 부착강도특성
  3.1 실험체 제작
  3.2 부착강도 측정 실험
  3.3 실험 결과 및 문헌조사 결과
 4. 결과 분석
  4.1 이형 GFRP 보강근을 사용한 실험체의 부착강도
  4.2 모래분사형 GFRP 보강근을 사용한 실험체의부착강도
  4.3 보통콘크리트에 이형 및 모래 분사형 GFRP보강근을 사용한 실험체의 부착강도
  4.4 경량콘크리트에 이형 및 모래 분사형 GFRP보강근을 사용한 실험체의 부착강도
 5. 결 론
 REFERENCES

• 이동기(부경대학교 토목공학과 석사과정) | Lee Dong-Ki
• 장희석(부경대학교 토목공학과 교수) | Jang Heui-Suk Corresponding author