Behaviour of FRP-to-concrete bonded joints

Karunasena, W., and Williams, K. (2006) Behaviour of FRP-to-concrete bonded joints. In: Proceedings of Developments in Composites: Advanced, Infrastructural, Natural and Nano-composites, pp. 131-136. From: ACUN-5: International Composites Conference: Advanced, Infrastructure, Natural and Nanocomposites, 11-14 July 2006, Sydney, NSW, Australia.

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Abstract

The bond behaviour between FRP (fibre-reinforced polymer) and concrete is a consideration in the design of FRP strengthening mechanisms for structurally deficient or functionally obsolete concrete structures. In the past, a number of empirical models and fracture mechanics based theoretical models have been proposed for determining the effective bond length and bond strength of FRP sheets/plates bonded to concrete. However, these methods have yielded large discrepancies in the predictions of effective bond length and bond strength. In this paper, the results of an experimental investigation into effective bond length and bond strength are presented. Comparison of experiments results with predictions from three empirical and three fracture mechanics based theoretical models shows that a recently proposed fracture mechanics based local-bond slip model provides a conservative prediction of the effective bond length and an accurate prediction of bond strength.

Item ID: 4363
Item Type: Conference Item (Research - E1)
ISBN: 0-7334-2363-9
Keywords: concrete beam; debonding; composite materials; bond length; fracture mechanics; bond strength
Date Deposited: 22 Oct 2009 04:31
SEO Codes: 87 CONSTRUCTION > 8702 Construction Design > 870201 Civil Construction Design @ 50%
87 CONSTRUCTION > 8703 Construction Materials Performance and Processes > 870301 Cement and Concrete Materials @ 25%
87 CONSTRUCTION > 8704 Construction Processes > 870401 Civil Construction Processes @ 25%
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