ISSN: 2265-6294

Experimental Investigation of Strength in Hybrid Fiber-Reinforced Concrete

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BANATH SUNDER LAL, KAKKERLA SUMANASREE, KALLAKUNTLA KRISHNATEJA, M.PAWAN KUMAR

Abstract

This experimental investigation into hybrid fiber-reinforced concrete (HFRC) has highlighted the significant improvements in mechanical properties achievable through the strategic combination of different fiber types. The results demonstrate that incorporating both steel and polypropylene fibers into the concrete matrix enhances its compressive strength, tensile strength, and toughness compared to conventional concrete mixes. The optimal blend of fibers not only improves load-bearing capacity but also increases ductility and resistance to cracking, making HFRC a viable option for various structural applications. The study indicates that the synergistic effect of hybrid fibers contributes to a more uniform stress distribution within the concrete, which is crucial for enhancing durability and performance under dynamic loading conditions. Specifically, the incorporation of steel fibers improves the concrete’s ability to resist tensile forces, while polypropylene fibers provide effective control over plastic shrinkage and enhance post-cracking behavior. These findings advocate for the adoption of hybrid fiber reinforcement in concrete technology as a means to produce more resilient and durable structures. The successful integration of different fiber types presents a promising avenue for developing high-performance concrete that meets the demands of modern construction practices.

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