Flexural behavior of concrete beams reinforced with glass fiber-reinforced polymer (GFRP) bars

By H. Toutanji, M. Saafi. 2000

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An experimental study of the flexural behaviour of GFRP RC beams and comparison with prediction models (2009, methodology): “In the case of serviceability, and specifically for deflections, several authors [3–7] have proposed coefficients to modify Branson’s equation used in steel design codes [8], while others [9,10] have proposed a modified equivalent moment of inertia derived from curvatures.”
Guide for the Design and Construction of Structural Concrete Reinforced with FRP Bars (2006, background): “…has been found to overestimate the effective moment of inertia of FRP-reinforced beams, especially for lightly reinforced beams, implying a lesser degree of tension stiffening than in comparable steelreinforced beams (Nawy and Neuwerth 1977; Benmokrane et al. 1996a; Toutanji and Saafi 2000).”
Experimental investigation of the behaviour of concrete beams reinforced with GFRP bars under static and impact loading (2016, background): “GFRP RC beams experience higher deflections and larger crack widths compared to steel RC beams with equivalent reinforcement ratios [8].”
Evaluation of Flexural Behavior and Serviceability Performance of Concrete Beams Reinforced with FRP Bars (2011, background): “As emphasized by Yost et al. (2003), the cubic form of the expression was intended to represent the nonlinear characteristics of the transition that conveniently reflects the declining contribution of concrete between cracks.”