Experimental and Theoretical Analysis of Cracking Moment of Concrete Beams Reinforced with Hybrid Fiber Reinforced Polymer and Steel Rebars

  • Hiep Dang Vu Civil Engineering Faculty, Hanoi Architectural University, Vietnam
  • Duy Nguyen Phan Faculty of Civil Engineering, Mientrung University of Civil Engineering, Vietnam
Keywords: concrete beam, fiber reinforced polymer (FRP), hybrid reinforcement, cracking moment, flexural behavior

Abstract

This study aims at experimentally and theoretically investigating the cracking moment (Mcrc) of hybrid Fiber Reinforced Polymer (FRP)/steel Reinforced Concrete (RC) beams. Six hybrid Glass FRP (GFRP)/steel and three GFRP RC beams with various GFRP and steel reinforcement ratios are tested in four-point bending scheme. Experimental results indicate that both GFRP and steel rebars affect Mcrc, but the effect of steel reinforcement is more significant. When the steel reinforcement ratio increases to 1.17%, Mcrc goes up to 15.9%, while the same value for GFRP is only 9.7%. An analytical method is proposed based on the plain section assumption and nonlinear behavior of materials for estimating Mcrc. The proposed model shows a good agreement with the experimental data conducted in this study and collected from the literature. The results of the parametric study give evidence of the positive effects of hybrid reinforcement ratios and elastic modulus of FRP on Mcrc of hybrid RC beams.

Author Biography

Hiep Dang Vu, Civil Engineering Faculty, Hanoi Architectural University, Vietnam

Civil engineering faculty, Hanoi Architectural University, Vietnam

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Published
2021-06-30
How to Cite
[1]
H. Dang Vu and D. N. Phan, “Experimental and Theoretical Analysis of Cracking Moment of Concrete Beams Reinforced with Hybrid Fiber Reinforced Polymer and Steel Rebars ”, Adv. technol. innov., Jun. 2021.
Section
Articles