International Journal of Concrete Structures and Materials

Korea Concrete Institute (한국콘크리트학회)
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Composite Strips with Various Anchor Systems for Retrofitting Concrete Beams

  • Yoshitake, Isamu (Dept. of Civil and Environmental Engineering, Yamaguchi University) ;
  • Yumikura, Keiyu (Inai Conex Co. Ltd.) ;
  • Mimura, Yoichi (Faculty of Civil and Environmental Engineering, Kure National College of Technology) ;
  • Kim, Yail-J. (Dept. of Civil Engineering, North Dakota State University)
  • Received : 2010.12.08
  • Accepted : 2011.03.17
  • Published : 2011.06.30
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Abstract

This paper presents the performance of anchor systems for reinforced concrete beams retrofitted with carbon fiber reinforced polymer (CFRP) strips. Nine simply-supported beams are tested with various anchor systems such as steel hooks, steel plates with anchor bolts, CFRP anchor plates, and near-surface mounted (NSM) CFRP strip. The effects of these anchors on the behavior of the retrofitted beams are discussed, including load-carrying capacity, failure modes, and ductility characteristics. Test results indicate that end-anchorage is an important parameter when a CFRP-retrofit design is conducted. Mechanical bolts and NSM CRFP anchors are recommended.

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References

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