Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8335
Title: Finite element simulation of debonding in FRP-to-concrete bonded joints
Authors: Lu, XZ
Jiang, JJ
Teng, JG 
Ye, LP
Keywords: Bond
Composites
Concrete
Crack models
Debonding
Finite element models
FRP
Interfaces
Pull tests
Retrofit
Strengthening
Issue Date: 2006
Publisher: Elsevier
Source: Construction and building materials, 2006, v. 20, no. 6, p. 412-424 How to cite?
Journal: Construction and building materials 
Abstract: The behaviour of reinforced concrete (RC) structures strengthened with externally bonded fibre-reinforced polymer (FRP) reinforcement in the forms of thin plates or sheets is often dominated by debonding of the FRP reinforcement from concrete. As a result, a large number of studies have addressed debonding failures in FRP-strengthened RC structures, with many of them being focussed on understanding the behaviour of simple FRP-to-concrete bonded joints in which an FRP plate/sheet is bonded to a concrete prism and is subject to a tensile force. Despite the many existing studies, there are still substantial uncertainties and difficulties with the finite element modelling of debonding failures due to the complex behaviour of cracked concrete. This paper explores the use of different crack models in modelling and compares their predictions of the debonding behaviour of FRP-to-concrete bonded joints. The results presented in this study show that a non-coaxial rotating angle crack model (RACM) is required to accurately predict this debonding behaviour. Furthermore, the debonding mechanism is also examined using results obtained with a non-co-axial RACM.
URI: http://hdl.handle.net/10397/8335
ISSN: 0950-0618
DOI: 10.1016/j.conbuildmat.2005.01.033
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