Author(s): Syed Mohsin, Bandi Ramesh Babu and C Sashidhar

Abstract: This paper investigates the mechanical properties of hybrid fiber-reinforced self-compacting concrete (SCC). The study evaluates the individual and combined contributions of steel fibers (1.0%), glass fibers (0.1%), and polypropylene fibers (0.3%) to enhancing compressive and flexural strength. Steel fibers were used for their crack bridging capabilities and tensile strength enhancement, while glass fibers improved resistance to brittle failure, and polypropylene fibers mitigated shrinkage cracks and improved ductility.The experimental investigation revealed a significant improvement in compressive strength, increasing from 15.06 MPa at 7 days to 30.00 MPa at 28 days, demonstrating the positive impact of the hybrid fiber combination over time. Flexural strength also exhibited notable enhancement, reaching 6.5 MPa, indicating better resistance to bending stresses and increased structural capacity. These results highlight the synergy of hybrid fibers, which combine the benefits of each type to compensate for individual limitations and deliver superior mechanical performance.The findings emphasize the potential of hybrid fiber-reinforced SCC in advanced construction applications, particularly where strength, crack resistance, and durability are critical. This research not only provides valuable insights into the mechanical performance of such composites but also paves the way for the development of innovative materials tailored for resilient and sustainable infrastructure.

DOI: 10.22271/27078388.2025.v6.i1b.48

Pages: 170-174 | Views: 33 | Downloads: 15

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