Standardised double-shear test for determining Bond of FRP to concrete and corresponding model development

SERBESCU, Andreea, GUADAGNINI, Maurizio and PILAKOUTAS, Kypros (2013). Standardised double-shear test for determining Bond of FRP to concrete and corresponding model development. Composites Part B: Engineering, 55, 277-297.

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Bond stress – slip characteristics play a major role in the behaviour of EBR FRP strengthened RC beams. These characteristics are normally determined by using experimental data from small-scale bond tests. However, the research community is yet to agree on a unified experimental set-up and testing procedure for these tests. The lack of standard tests leads to high variability in published results and hinders the development of reliable design models. The testing programme presented herein was part of an international Round Robin Test (iRRT) exercise, aimed at assessing the suitability of double shear tests to characterise the bond behaviour of FRP strengthening systems. A total of 20 tests were performed on different FRP plates. Recommendations on how to improve the iRRT methodology are given. Based on the results, an improved capacity model that accounts for concrete surface preparation is proposed and validated against an extensive database of published results. The outcome of the current research is expected to provide engineers with more confidence in designing safely strengthening applications whilst making the best use of the FRP materials.

Item Type: Article
Departments - Does NOT include content added after October 2018: Faculty of Social Sciences and Humanities > Department of Natural and Build Environment
Identification Number:
Page Range: 277-297
Depositing User: Andreea Serbescu
Date Deposited: 13 Aug 2018 15:20
Last Modified: 18 Mar 2021 11:15

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