Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/5382
Title: Bond-slip model for FRP laminates externally bonded to concrete at elevated temperature
Authors: Dai, JG 
Gao, WY
Teng, JG 
Keywords: Fiber reinforced polymer
Concrete
Interface
Bond-slip model
Elevated temperature
Fracture energy
Issue Date: 28-Sep-2012
Publisher: American Society of Civil Engineers
Source: Journal of composites for construction, 28 Sept. 2012, v. 17, no. 2, p. 217–228 How to cite?
Journal: Journal of composites for construction 
Abstract: This paper presents a nonlinear local bond-slip model for fiber reinforced polymer (FRP) laminates externally bonded to concrete at elevated temperature for future use in the theoretical modeling of fire resistance of FRP-strengthened concrete structures. The model is an extension of an existing two-parameter bond-slip model for FRP-to-concrete interfaces at ambient temperature. The two key parameters employed in the proposed bond-slip model, the interfacial fracture energy G[sub f] and the interfacial brittleness index B, were determined using existing shear test data of FRP-to-concrete bonded joints at elevated temperature. In the interpretation of test data, the influences of temperature-induced thermal stress and temperature-induced bond degradation are properly accounted for. As may be expected, the interfacial fracture energy G[sub f] is found to be almost constant initially and then starts to decrease when the temperature approaches the glass transition temperature of the bonding adhesive; the interfacial brittleness index B exhibits a similar trend. The proposed temperature-dependent bond-slip model is shown to closely represent the test data upon which it is based, despite the large scatter of the test data.
URI: http://hdl.handle.net/10397/5382
ISSN: 1090-0268
EISSN: 1943-5614
DOI: 10.1061/(ASCE)CC.1943-5614.0000337
Rights: © 2012 by the American Society of Civil Engineers
This is the author’s version of a work that was accepted for publication in Journal of Composites for Construction. The open URL of the article: http://dx.doi.org/10.1061/(ASCE)CC.1943-5614.0000337
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