Cumulative Effects of Rice Husk Ash and Coconut Coir Fibers on M25 Grade Concrete's Mechanical Properties

Rahul Kanesh, Chaitali Gangwal, Dr. Chaitanya Mishra

Abstract: The increasing demand for environmentally responsible construction practices has accelerated the exploration of agricultural by-products as sustainable alternatives to conventional concrete constituents. This study presents a performance-based investigation of M25 grade concrete modified with Rice Husk Ash (RHA) as a partial cement replacement and Coconut Coir Fiber (CCF) as natural reinforcement. Concrete mixes incorporating varying levels of RHA (5%, 10%, and 15% by weight of cement) and CCF (0.5%, 0.75%, and 1% by volume of concrete) were evaluated alongside a control mix. A total of ten mix designs were prepared and tested in accordance with IS 10262:2019. Experimental evaluations included workability (slump), compressive strength, split tensile strength, and flexural strength at 7 and 28 days. The results indicate that the incorporation of RHA and CCF significantly improves certain mechanical properties while promoting material sustainability. The optimal combination 10% RHA with 0.75% CCF demonstrated superior overall performance, making it a viable option for sustainable rural construction. This study validates the potential of agro-waste utilization in developing durable, cost-effective, and eco-friendly concrete.

Keywords: Sustainable Concrete, Rice Husk Ash, Coconut Coir Fiber, M25 Grade, Eco-Friendly Construction

How to Cite?: Rahul Kanesh, Chaitali Gangwal, Dr. Chaitanya Mishra, "Cumulative Effects of Rice Husk Ash and Coconut Coir Fibers on M25 Grade Concrete's Mechanical Properties", Volume 14 Issue 8, August 2025, International Journal of Science and Research (IJSR), Pages: 201-216, https://www.ijsr.net/getabstract.php?paperid=SR25801112230, DOI: https://dx.doi.org/10.21275/SR25801112230