Flexural performance of RC beams strengthened with externally-side bonded reinforcement (E-SBR) technique using CFRP composites

Hosen, Md. Akter and Althoey, Fadi and Jumaat, Mohd Zamin and Alengaram, U. Johnson and Sulong, N. H. Ramli (2021) Flexural performance of RC beams strengthened with externally-side bonded reinforcement (E-SBR) technique using CFRP composites. Materials, 14 (11). ISSN 1996-1944, DOI https://doi.org/10.3390/ma14112809.

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Reinforced concrete (RC) structures necessitate strengthening for various reasons. These include ageing, deterioration of materials due to environmental effects, trivial initial design and construction, deficiency of maintenance, the advancement of design loads, and functional changes. RC structures strengthening with the carbon fiber reinforced polymer (CFRP) has been used extensively during the last few decades due to their advantages over steel reinforcement. This paper introduces an experimental approach for flexural strengthening of RC beams with Externally-Side Bonded Reinforcement (E-SBR) using CFRP fabrics. The experimental program comprises eight full-scale RC beams tested under a four-point flexural test up to failure. The parameters investigated include the main tensile steel reinforcing ratio and the width of CFRP fabrics. The experimental outcomes show that an increase in the tensile reinforcement ratio and width of the CFRP laminates enhanced the first cracking and ultimate load-bearing capacities of the strengthened beams up to 141 and 174%, respectively, compared to the control beam. The strengthened RC beams exhibited superior energy absorption capacity, stiffness, and ductile response. The comparison of the experimental and predicted values shows that these two are in good agreement.

Item Type: Article
Funders: University of Malaya High Impact Research Grant (HIRG) [UM.C/HIR/MOHE/ENG/36]
Uncontrolled Keywords: flexural strengthening; E-SBR; CFRP composites; Ductility; energy absorption capability; Stiffness
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Faculty of Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 13 Apr 2022 00:59
Last Modified: 13 Apr 2022 00:59
URI: http://eprints.um.edu.my/id/eprint/27931

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