Analysis of Effects on Concrete Beam Strengthened with CFRP Plate according to Temperature Change

CFRP로 보강된 콘크리트 보의 온도 변화에 따른 영향 분석

  • 조홍동 (충북대학교 토목공학과) ;
  • 한상훈 (충북대학교 토목공학과) ;
  • 이승수 (충북대학교 구조시스템공학과) ;
  • 신진환 (충주대학교 토목공학과)
  • Published : 2003.06.01

Abstract

In this study, the behavior characteristics of specimen strengthened with CFRP plate were analyzed according to the change of temperature. CFRP plate itself has a good resistance at the high temperature, but epoxy used as a adhesive is lost its bonding strength at the relatively low temperature. Therefore, this study carries out experiment on the beams slot-bonded with CFRP plates in order to maintain the successful bonding strength of epoxy at high temperature. It is presented that the range of glass transition temperature is 60-8$0^{\circ}C$ and RC beams slot-bonded with CFRP plate shows more increasing resistance and failure load than that of interface bonded at the high temperature.

Keywords

CFRP plate;temperature;bonding strength

References

  1. E. Ferrier, G. Lagarde & P. Hamelin, 'Concrete Beams Reinforced by Fibre Reinforced Plastics: The Effect of Temperature on the Adhesive Layer,' Composites Science and Technology, Vol. 61, pp. 425 -431, 200I https://doi.org/10.1016/S0266-3538(00)00129-9
  2. Hollaway, L. C., and Leeming, M. B., 'Strengthening of Reinforced Concrete Structures : using externally-bonded FRP composites in structural and civil engineering,' CRC Press, New York, pp. 63-67, 1999
  3. 한상훈, 허열, 조홍동, 홍기남, 박명준, '탄소섬유 보강판을 이용한 철근콘크리트 보의 휨성능 개선에 관한 실험적 연구,' 한국콘크리트학회 학술발표회 논문집, 제12권, 1호, pp. 727-732, 2000
  4. Saafi, M, 'Effect of Fire on FRP Reinforced Concrete Members,' Composite Structures, Vol. 58, pp. 11 -20, 2002 https://doi.org/10.1016/S0263-8223(02)00045-4
  5. 이한승,' 섬유시트로 보강된 철근 콘크리트 구조부재의 방. 내화성능,' 한국콘크리트학회지, Vol. 14, No.2, pp. 45 -50, 2002
  6. Balaguru, P. N., 정란, '보수. 부강에 사용하는 무기계 폴리머 복합재료의 내열성능,' 한국콘크리트학회 가을 학술발표회 논문집, Vol. 9, No. 2, pp. 647-652, 1997.