Numerical Study on Deflection Behaviour of Concrete Beams Reinforced with GFRP Bars

Fiber-Reinforced Polymer (FRP) bars are gaining popularity as sustainable alternatives to conventional reinforcing steel bars in reinforced concrete applications. The production of FRP bars has lower environmental impact compared to steel reinforcing bars. In addition, the non-corroding FRP material...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2017-10, Vol.245 (3), p.32065
Main Authors: Mohamed, Osama A., Khattab, Rania, Al Hawat, Waddah
Format: Article
Language:English
Subjects:
Bars
CAD
Computer aided design
Concrete
Deflection
Environmental impact
Fiber reinforced concretes
Fiber reinforced polymers
Finite element method
Glass fiber reinforced plastics
Mathematical analysis
Mechanical properties
Numerical analysis
Rebar
Reinforced concrete
Reinforcement
Reinforcing steels
Structural members
Tensile strength
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Summary:Fiber-Reinforced Polymer (FRP) bars are gaining popularity as sustainable alternatives to conventional reinforcing steel bars in reinforced concrete applications. The production of FRP bars has lower environmental impact compared to steel reinforcing bars. In addition, the non-corroding FRP materials can potentially decrease the cost or need for maintenance of reinforced concrete structural elements, especially in harsh environmental conditions that can impact both concrete and reinforcement. FRP bars offer additional favourable properties including high tensile strength and low unit weight. However, the mechanical properties of FRP bars can lead to large crack widths and deflections. The objective of this study is to investigate the deflection behaviour of concrete beams reinforced with Glass FRP (GFRP) bars as a longitudinal main reinforcement. Six concrete beams reinforced with GFRP bars were modelled using the finite element computer program ANSYS. The main variable considered in the study is the reinforcement ratio. The deflection equations in current North American codes including ACI 440.1R-06, ACI 440.1R-15 and CSA S806-12 are used to compute deflections, and these are compared to numerical results. It was concluded in this paper that deflections predicted by ACI 440.1R-06 equations are lower than the numerical analysis results while ACI 440.1R-15 is in agreement with numerical analysis with tendency to be conservative. The values of deflections estimated by CSA S806-12 formulas are consistent with results of numerical analysis.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/245/3/032065