Volume 20 No 12 (2022)
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Experimental Study on Enhancement in Modulus of Elasticity of Concrete with Inclusion of Hybrid Fiber Reinforcement
Rashi S. Belsure, S.K. Kulkarni , S.A. Halkude
This article provides the experimental result in enhancement of modulus of elasticity of concrete by inclusion of discrete fibers. Researchers have successfully demonstrated that the addition of fibers to concrete strengthens the concrete by fostering interactions between the fibers and matrix. Concrete's elastic modulus, which affects the stiffness of the material and is a reliable measure of strength, must be taken into consideration in order to maintain the material's maximum serviceability. The tests on M20 and M25 grade conventional and Hybrid Fiber Reinforced Concrete (HFRC) are carried out in laboratory to examine the improvement in modulus of elasticity. The combination of hooked end steel fiber ranging from 0.5% to 1.00% by volume of concrete and fibrillated polypropylene (PP) fibers from 0.3% and 0.6% is added in concrete.The study reveals that the addition of 1.00% hooked end steel fibers + 0.3% fibrillated polypropylene fibers by volume of concrete significantly improves the HFRC's experimental modulus of elasticity by 52.23% and 55.60% for M20 and M25 concrete respectively and also helps prevent excessive deformation by avoiding the most cost-effective designs
Modulus of Elasticity; Compressive Strength; Fibrillated Polypropylene fiber; Hooked end steel fiber; Hybrid fiber reinforced concrete
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