Flexure Behavior of Hybrid-Reinforced Concrete Beams Consisting of PVA Fibers and GFRP Bars

In the current study, PVA fibers were examined at doses of 0.125, 0.250, 0.375, and 0.50% in relation to concrete volume. Two different types of plasticizers, SNF-based and PCE-based, were employed in the preliminary study to understand the various effects on concrete and to use polyvinyl alcohol fibers to improve the plasticizer dosage in fiber-reinforced concrete. To determine which plasticizer is more useful and practical to employ, the compressive and split tensile strengths are examined. We have discovered that the best dosage of PVA fibers for efficacy with PCE-based plasticizer is 0.9%. The primary study has then been preceded. For the purposes of our experiment, we cast the beams using pure FRP, which contains 0% PVA and 0.25% PVA, and HFRP, which contains 0% PVA and 0.25% PVA, with GFRP bars installed in the tension face of the beam at the corners. The flexure capacity of pure FRP and HFRP was then contrasted. Then, based on the results, we discovered that HFRP with 0.25% PVA can be used to increase flexural capacity. Since there is no yielding point, the main disadvantage of FRP bars is their brittleness. Consequently, numerous studies have been done to improve their flexure capacity by introducing hybrid reinforcement, where both steel bars and FRP bars are placed in tensile reinforcement so that they can meet minimum flexure capacity.