Improving the strength for Pervious Concrete with Rice Husk and Coconut Husk

Abstract - Sustainable construction practices have led to the development of eco-friendly materials that reduce environmental impact while maintaining structural integrity. This study explores the use of coconut husk ash (CHA) and rice husk ash (RHA) as partial replacements for cement in the production of pervious concrete paver blocks. The objective is to enhance permeability, reduce cement consumption, and improve mechanical properties while promoting waste utilization. Experimental investigations were conducted by replacing cement with varying percentages of CHA and RHA (5%, 10%, and 15%) in different mix proportions. Key parameters such as compressive strength, water permeability, porosity, and durability were assessed. The results indicate that an optimal blend of CHA and RHA improves the paver blocks' performance while ensuring sufficient strength for pedestrian and light traffic applications. Furthermore, the integration of agro-waste materials contributes to cost-effectiveness and sustainability, making it a viable alternative for eco-friendly pavement solutions. This research demonstrates that incorporating coconut and rice husk ash in pervious concrete paver blocks can significantly reduce the carbon footprint of construction materials, promote sustainable waste management, and enhance urban water drainage systems. Key Words : Pervious concrete, paver blocks, coconut husk ash, rice husk ash, sustainable construction, waste utilization, permeability, eco-friendly materials.