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Investigation of Near Surface–Mounted Method for Shear Rehabilitation of Reinforced Concrete Beams Using Fiber Reinforced–Polymer Composites

Lookup NU author(s): Dr Amir Mofidi, Dr Liang Cheng

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This is the authors' accepted manuscript of an article that has been published in its final definitive form by American Society of Civil Engineers, 2016.

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Abstract

This paper presents the results of an investigation of reinforced concrete (RC) T-beams retrofitted in shear with near-surface mounted (NSM) fibre-reinforced polymer (FRP) rods. Six full-scale 4,520-mm-long RC T-beams were tested to study the effects of important parameters such as the presence of NSM FRP rods, the presence of steel stirrups, and the steel stirrup ratio. This paper provides an insightful and comprehensive description of the behaviour of strengthened T-beams under increasing load, from the formation of the first crack to ultimate failure. The results of this study and those gathered in the presented database show that existing steel stirrups and strengthening NSM FRP did not diminish each other’s effect when failure modes unrelated to shear resistance of RC beams were prevented. The experimental results of this study and those in the database were used to verify a newly proposed model to predict the shear contribution of NSM FRP rods and laminates in RC beams strengthened in shear. The proposed model showed an improved accuracy compared with the existing models in the literature.


Publication metadata

Author(s): Mofidi A, Chaallal O, Cheng L, Shao Y

Publication type: Article

Publication status: Published

Journal: Journal of Composites for Construction

Year: 2016

Volume: 20

Issue: 2

Pages: 04015048

Print publication date: 01/04/2016

Online publication date: 03/09/2015

Acceptance date: 02/07/2015

Date deposited: 22/03/2019

ISSN (print): 1090-0268

ISSN (electronic): 1943-5614

Publisher: American Society of Civil Engineers

URL: https://doi.org/10.1061/(ASCE)CC.1943-5614.0000612

DOI: 10.1061/(ASCE)CC.1943-5614.0000612


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