Title: Bond slip model of FRP-to-concrete surfaces

Authors: M.S. Mohd Amirul; M.R. Raizal Saifulnaz; N.A. Farah; S. Norazizi

Addresses: Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43000 Serdang, Selangor, Malaysia ' Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43000 Serdang, Selangor, Malaysia ' Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43000 Serdang, Selangor, Malaysia ' Department of Civil Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43000 Serdang, Selangor, Malaysia

Abstract: The bond between fibre reinforced polymer (FRP) plate and concrete surface has shown significant effect on the behaviour of strengthened reinforced concrete (RC) beam. Therefore, an intermediate crack (IC) debonding resistance which depends on the interface between FRP plate and the concrete surface remains as the main concern in designing RC beam strengthened with FRP plate. This research is to develop the bond slip model between the interface of FRP plate and concrete surface and to validate the model by carrying out experimental pull out test. Comparison was made between the new bond slip model and the existing bond slip model. It was found that the new bond slip model achieved very close results as compared to the published bond slip model.

Keywords: bond slip models; intermediate crack debonding; EB reinforcement; externally bonded reinforcement; NSM reinforcement; near surface mounted reinforcement; modelling; FRP plate; fibre reinforced polymer; concrete surfaces; reinforced concrete beams; interface; strengthened beams.

DOI: 10.1504/IJSMSS.2014.068809

International Journal of Sustainable Materials and Structural Systems, 2014 Vol.1 No.4, pp.332 - 350

Received: 11 Oct 2014
Accepted: 20 Nov 2014
Published online: 22 Apr 2015 *

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