Assessment of debonding failure models for FRP retrofitted URM structures

Zhuge, Y. and Yeap, K. X. (2011) Assessment of debonding failure models for FRP retrofitted URM structures. In: 21st Australasian Conference on the Mechanics of Structures and Materials (ACMSM 21): Incorporating Sustainable Practice in Mechanics of Structures and Materials , 7-10 Dec 2010, Melbourne, Australia.


In recent years engineers proposed to use Fibre Reinforced Polymer (FRP) as a strengthening material to retrofit masonry structures. In order to accurately and conservatively predict the overall capabilities of FRP-strengthened masonry structures, the basic characteristic of shear debonding must be first studied and understood. For shear failures controlled by FRP debonding, stresses in the FRP at failure are controlled by the ultimate bond strength between the FRP and masonry. However, the research in this area is extremely limited for masonry. Hence in this paper, the existing models for estimating FRP strengthened concrete bond capacity due to pure shear are assessed based on a test database of masonry collected from the available literature. The results indicate that the test-to-predicted ratios for all models are generally less conservative although they were performing well when the testing data for concrete was used. A new effective length model was then proposed from this study to improve the accuracy of the model.

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: © 2011 Taylor & Francis Group, London. Permanent restricted access to published version due to publisher copyright restrictions.
Faculty/School / Institute/Centre: Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering
Date Deposited: 07 Feb 2011 10:58
Last Modified: 28 Nov 2014 05:59
Uncontrolled Keywords: URM; retrofitting; FRP; in-plane shear; debonding
Fields of Research : 09 Engineering > 0905 Civil Engineering > 090503 Construction Materials
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0912 Materials Engineering > 091205 Functional Materials
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1201/b10571-97

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