Experimental Study on Flexural Toughness of Steel-Polyvinyl Alcohol Hybrid Fiber Reinforced Concrete

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Abstract

In order to study the flexural toughness of Steel(S)-Polyvinyl Alcohol (PVA) Hybrid Fiber reinforced Concrete, 10 specimens of hybrid fiber reinforced concrete with dimensions of 100 mm × 100 mm× 400 mm were studied by four point bending test. The load-deflection curve of hybrid fiber reinforced concrete beam was obtained, and its toughness was evaluated by flexural toughness index method. The results showed that the simultaneous incorporation of steel fiber and PVA fiber greatly improves the ultimate load and toughness index of concrete during bending failure, and fiber concrete has obvious strain hardening phenomenon. When PVA fiber volume content is 0.75% and steel fiber volume content is 1.25%, hybrid fiber concrete shows good positive hybrid effect, which is the most ideal to improve the bending performance of concrete matrix. And the research conclusion provides reference for the design and engineering application of hybrid fiber concrete.

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Su, N., & Fan, X. (2021). Experimental Study on Flexural Toughness of Steel-Polyvinyl Alcohol Hybrid Fiber Reinforced Concrete. In IOP Conference Series: Earth and Environmental Science (Vol. 719). IOP Publishing Ltd. https://doi.org/10.1088/1755-1315/719/2/022080

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