A review paper of concrete using Rice Husk Ash (RHA) as partial replacement of cement

Abstract

Bangladesh, a fast-developing country in Asia, is witnessing unprecedented urban expansion due to its rising economy and industrialization, resulting in a significant demand for concrete works. Cement, the primary element of concrete, in production, contributes significantly to air pollution which poses severe health & environmental dangers and also leads to rampant labor rights violations. The study investigates the results of using different proportions of Rice Husk Ash (RHA) instead of cement to minimize the use and demand of cement in conventional concrete works. RHA is a waste from rice processing and a promising additional cementitious material due to its high silica content. The study aims to evaluate the mechanical properties of concrete involving different ratios of RHA. In order to determine whether employing RHA in concrete is appropriate, tests for compressive strength, water absorption, and split tensile strength tests were conducted. Even without any sort of processing and identified environmental favors associated with waste disposal, replacing 10 to 15% of the cement in structural concrete with RHA can be a good option as an economical a strength consideration of concrete. Recycling RHA as a prospective raw material substitute for cement in concrete work looks to be a workable solution to both the environmental problem and the issue of cost-effective construction design.