This paper is published in Volume-3, Issue-5, 2017
Area
Structural Engineering.
Author
Chidananda S. H
Co-authors
R. B Khadiranaikar
Org/Univ
Basavesvar Engineering College (Autonomous), Bagalkot, Karnataka, India
Pub. Date
22 September, 2017
Paper ID
V3I5-1191
Publisher
Keywords
GFRP Rebar, Flexural Behaviour, Reinforcement Ratio.

Citationsacebook

IEEE
Chidananda S. H, R. B Khadiranaikar. Flexural Behaviour of Concrete Beams Reinforced With GFRP Rebars, International Journal of Advance Research, Ideas and Innovations in Technology, www.IJARIIT.com.

APA
Chidananda S. H, R. B Khadiranaikar (2017). Flexural Behaviour of Concrete Beams Reinforced With GFRP Rebars. International Journal of Advance Research, Ideas and Innovations in Technology, 3(5) www.IJARIIT.com.

MLA
Chidananda S. H, R. B Khadiranaikar. "Flexural Behaviour of Concrete Beams Reinforced With GFRP Rebars." International Journal of Advance Research, Ideas and Innovations in Technology 3.5 (2017). www.IJARIIT.com.

Abstract

This study reports test results of 12 concrete beams measuring 150mm wide × 180mm deep× 1200mm long reinforced with glass fiber-reinforced polymer (GFRP) bars subjected to a four point loading system. The test specimens were classified into three groups according to the concrete compressive strength. The main variation done for each beam in all the three groups was percentage of reinforcement (0.5%, 1%, 1.5% and 2%). Since all the beams were over reinforced failure occurred due to rupture of concrete at compression zone. The failure is initiated by a vertical crack at the midspan which extended up to compression zone of the beam and propagated horizontally which leads to bond failure between top concrete and compression reinforcement. The test results revealed that the crack widths and mid-span deflection significantly reduced by increasing the reinforcement ratio. The ultimate load increased by 7.5%, 16.8%, 27.7% as the reinforcement percentage increased from 0.5% to 1%, 1.55 and 2% respectively. The flexural provisions of structural design guidelines namely ACI 440.1R-06, ECP 208-2005 and CSA S806-12 were evaluated against the test data. ACI 440.1R-06 over estimates the moment resistance of GFRP bars as compared to other codes and experimental results. Whereas all the design guidelines predicts nearly the same values for deflection. And for crack width approximation Toutanji’s equation is more accurate compared to ACI equation.
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