Analytical modelling of bond-slip failure between epoxy bonded FRP and concrete substrate

Augusthus Nelson, L; Al-Allaf, MHF; Weekes, L

Abstract

In this paper, a set of explicit theoretical derivations from a generalised
bond-slip model for an epoxy bonded fibre reinforced polymer (FRP) sheet
to concrete are presented. The derivations address the maximum bond resistance, load-slip response, effective bond length and stress-strain distributions
along the FRP. The generalised bond-slip model was compared with the existing bond-slip models to obtain the optimal bond-slip parameter using bond
resistance results of single and double lap shear tests results available in the
literature. The theoretical predictions using the optimal bond-slip parameters
showed good agreement with experimental results of double lap shear tests.
Furthermore, in order to understand the influence of the bond-slip parameters,
a series of parametric studies are presented. Overall, the proposed bond-slip
model and explicit derivations provide complete understanding of bonded FRP
on concrete, as opposed to the partial understanding provided by empirical and
semi-empirical models available in the literature

Citation

Augusthus Nelson, L., Al-Allaf, M., & Weekes, L. (2020). Analytical modelling of bond-slip failure between epoxy bonded FRP and concrete substrate. Composite Structures, 251, 112956. https://doi.org/10.1016/j.compstruct.2020.112596

• Journal Article Type: Article
• Acceptance Date: Jun 8, 2020
• Online Publication Date: Jun 16, 2020
• Publication Date: Nov 1, 2020
• Deposit Date: Jun 8, 2020
• Publicly Available Date: Jun 16, 2021
• Journal: Composite Structures
• Print ISSN: 0263-8223
• Publisher: Elsevier
• Volume: 251
• Pages: 112956
• DOI: https://doi.org/10.1016/j.compstruct.2020.112596
• Publisher URL: https://doi.org/10.1016/j.compstruct.2020.112596
• Related Public URLs: http://www.elsevier.com/wps/product/cws_home/405928/description