ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Effectiveness of Hybrid Fibers on Flexural Behavior of Concrete Beams Reinforced with Glass Fiber-Reinforced Polymer Bars

Author(s): Ganapati M. Patil, M. Chellapandian, and S. Suriya Prakash

Publication: Structural Journal

Volume: 117

Issue: 5

Appears on pages(s): 269-282

Keywords: flexure; glass fiber-reinforced polymer (GFRP) reinforcement; hybrid fibers; polyolefin fiber; serviceability; steel fiber

Date: 9/1/2020

Abstract:
The effectiveness of structural macro-synthetic polyolefin (PO) and a hybrid combination of steel and synthetic fibers on the flexural performance of glass fiber-reinforced polymer (GFRP) reinforced concrete beams is studied. Improvement in post-cracking stiffness, deformation factor, and change in failure modes due to fiber addition is investigated. In total, 14 full-scale RC beams are cast and tested under four-point bending configuration. The test series includes: 1) control specimen with GFRP reinforcement; 2) GFRP-reinforced members with 0.35, 0.70, and 1.0% volume of PO fibers; and 3) GFRP-reinforced members with 0.35, 0.70, and 1.0% volume of hybrid steel and PO fibers in equal ratio. Experimental results revealed that the addition of synthetic and hybrid fibers significantly improved the post-cracking stiffness, peak strength, and energy dissipation capacity of GFRP-reinforced members. The deflection levels at service loads reduced with increase in fiber dosage. Deflection of GFRP-reinforced members with and without fibers was calculated using the models proposed by different researchers and compared with test results at the serviceability levels. Also, a proposed model is introduced for consideration of the effect of fiber contribution in the predictions of deflection.




  

Please enter this 5 digit unlock code on the web page.