Effective Strain of RC Beams Strengthened in Shear with FRP

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Title Effective Strain of RC Beams Strengthened in Shear with FRP
Author Lee, Jung-Yoon; Hwang, Hyun-Bok; Doh, Jeung-Hwan
Journal Name Composites Part B: Engineering
Year Published 2012
Place of publication Netherlands
Publisher Elsevier
Abstract The failure modes of reinforced concrete (RC) beams strengthened in shear with fiber reinforced polymer (FRP) sheets or strips are not well understood as much as those of RC beams reinforced with steel stirrups. When the beams are strengthened in shear with FRP composites, beams may fail due to crushing of the concrete before the FRP reaches its rupture strain. Therefore, the effective strain of the FRP plays an important role in predicting the shear strength of such beams. This paper presents the results of an analytical and experimental study on the performance of reinforced concrete beams strengthened in shear with FRP composites and internally reinforced with conventional steel stirrups. Ten RC beams strengthened with varying FRP reinforcement ratio, the type of fiber material (carbon or glass) and configuration (continuous sheets or strips) were tested. Comparisons between the observed and calculated effective strains of the FRP in the tested beams failing in shear showed reasonable agreement.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1016/j.compositesb.2011.11.050
Copyright Statement Copyright 2011 Elsevier. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.
Volume 43
Issue Number 2
Page from 754
Page to 765
ISSN 1359-8368
Date Accessioned 2011-12-13
Date Available 2014-08-28T05:05:34Z
Language en_US
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Structural Engineering
URI http://hdl.handle.net/10072/42415
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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