Composite Strips with Various Anchor Systems for Retrofitting Concrete Beams

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Title: Composite Strips with Various Anchor Systems for Retrofitting Concrete Beams

Author(s): Isamu Yoshitake, Keiyu Yumikura, Yoichi Mimura, and Yail J. Kim

Publication: IJCSM

Volume: 5

Issue: 1

Appears on pages(s): 43-48

Keywords: anchor; beam; carbon fiber reinforced polymer; concrete; retrofitting

Date: 6/30/2011

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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