Exploring Rice Husk Ash As a Replacement For Cement in Concrete Production

Abstract

This study explores the use of Rice Husk Ash (RHA) as a partial cement replacement in concrete to enhance sustainability and reduce the environmental impact of cement production. RHA, a by-product of rice milling, is rich in silica and exhibits pozzolanicproperties, making it a potential replacement for improving concrete performance. Concrete mixes were prepared with varying RHA proportions (0%, 2%, 4%, 6%, 8%, 10%, 12%, and 14%) to evaluate the effects on compressive strength, workability, and durability. Nevertheless, a large amount of cement is used in the manufacturing of conventional concrete, which greatly increases carbon emissions. Sustainable construction methods must minimize cement use while preserving mechanical performance. The most effectivecombination was found to be an 8% inclusion of RHA, which increased compressive strength by the control mix while maintaining enough porosity for efficient water permeability. Higher percentage mixtures, especially those containing above 8% such as 10%, 12% and 14% resulted in decreased mechanical performance. This study shows that adding 8% RHA to concrete improves its mechanical qualities and lessens the environmental impact of cement-based construction, providing a sustainable option for contemporary urban infrastructure. This research shows how best to use it and its correct ratio can be used if desired. Which is effective in an environment. After the test, it can be said that the 8% ratio is the most balanced.