Experimental Study of Fresh and Hardened Properties of Coconut Fiber Self-Compacting Concrete
摘要
The Coconut Fiber Self-Compacting Concrete (CFSCC) utilizes coconut fiber as natural reinforcement, promoting sustainability in cementitious materials. This experimental study investigates the effects of incorporating coconut fiber (CF) into self-compacting concrete (SCC), focusing on the effects to both fresh and hardened properties of the SCC. The study evaluates CFSCC with varying dosages of coconut fiber (0% as control, 0.25%, 0.5%, 0.75%, and 1%) using CF of 3 cm length. Fresh properties tests accordance with EFNARC were conducted to assess the workability, passing ability and segregation resistance. Hardened properties tests, including compressive, flexural, and splitting tensile strength tests, were also performed. All CFSCC mixtures, met the EFNARC standard for fresh properties. CFSCC exhibits a gradual reduction in workability and passing ability with increasing CF content, while demonstrating enhanced segregation resistance compared to the control mix. At a CF content of 1%, there is a 13% reduction in workability and a 12% reduction in passing ability, while segregation resistance increases by 19% compared to the control mix. Results also indicate that incorporating CF generally enhances the mechanical strength, compared to the control mix. As optimal mixture with 0.25% CF, the compressive strength at 28 days, tensile splitting strength and flexural strength is 33.28%, 42.38% and 15.27% higher than the control. The findings highlight the potential of coconut fiber to improve mechanical properties and environmental sustainability in concrete construction, aligning with Sustainable Development Goals 9 Industries, Innovation and Infrastructure.