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Open AccessArticle

Behavior of FRP Bars-Reinforced Concrete Slabs under Temperature and Sustained Load Effects

1
Structure Rehabilitation and Materials Laboratory (SREML), University of Laghouat, Laghouat 03000, Algeria
2
Department of Civil Engineering, University of Sherbrooke, 2500, blvd Université, Sherbrooke, QC., J1K2R1, Canada
*
Authors to whom correspondence should be addressed.
Polymers 2014, 6(3), 873-889; https://doi.org/10.3390/polym6030873
Received: 28 November 2013 / Revised: 10 March 2014 / Accepted: 12 March 2014 / Published: 18 March 2014
(This article belongs to the Special Issue Selected Papers from "SMAR 2013")
The large temperature variation has a harmful effect on concrete structures reinforced with fiber reinforced polymer (FRP) bars. This is due to the significant difference between transverse coefficient of thermal expansion of these bars and that of the hardened concrete. This difference generates a radial pressure at the FRP bar/concrete interface, and may cause splitting cracks within concrete. This paper presents results of an experimental and analytical study carried out on FRP-reinforced concrete slabs subjected, simultaneously, to thermal and mechanical loads. The analytical model based on the theory of linear elasticity consists to evaluate combined effects of thermal and mechanical loads on the transverse expansion of FRP bars. Parameters studied in this investigation are the concrete cover thickness, FRP bar diameter, and the temperature variation. The thermal cycles were varied from −30 to +60 °C. Comparisons between analytical and experimental results show that transverse strains predicted from the proposed model are in good correlation with experimental results. View Full-Text
Keywords: FRP bars; thermal load; mechanical load; freeze/thaw cycles; concrete cover FRP bars; thermal load; mechanical load; freeze/thaw cycles; concrete cover
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Bellakehal, H.; Zaidi, A.; Masmoudi, R.; Bouhicha, M. Behavior of FRP Bars-Reinforced Concrete Slabs under Temperature and Sustained Load Effects. Polymers 2014, 6, 873-889.

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