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Modeling the pullout behavior of fiber reinforced polymer bars from concrete

✍ Scribed by Xu Chang; Gaowei Yue; Haixiao Lin; Chunan Tang

Publisher: Elsevier Science
Year: 2010
Tongue: English
Weight: 659 KB
Volume: 24
Category: Article
ISSN: 0950-0618
DOI: 10.1016/j.conbuildmat.2009.10.020

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✦ Synopsis

This paper presents a numerical investigation of pullout behavior of fiber reinforced polymer (FRP) bar from concrete matrix. As an attempt to capture the debonding process, a progressive damage model is used. Interfacial stress distribution for different load level is analyzed. The effects of embedded length, diameter of FRP bar and bond strength on the load-loaded end displacement are studied. The numerical results indicate that the bond stress decreases gradually from loaded end to embedded end along embedded bar length. The debonding initially starts from loaded end and propagates to embedded end as load increasing. The embedded length and bond strength affect the load-loaded end displacement curves significantly while the diameter of the FRP bar has no obvious effect on these curves. The numerical results have a good agreement with the experimental investigation.

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