Disposal of rice husk and its ash has been identified as a major problem in areas where rice
production is abundance. Cement is an expensive material which plays a major role in the construction
industry. This study shows the utilization of Rice Husk Ash (RHA) in concrete by conducting the laboratory
experiments. Replacement of cement with RHA enhances both compressive and tensile properties of
concrete. For this study, RHA was obtained from Bio-Energy power plant located in Ampara, Sri Lanka. As
received RHA was sieved in order to prepare two types of samples with different particle sizes. Enhanced
performances of Ordinary Portland Cement (OPC) can be achieved with 10% replacement of OPC by RHA
regardless of particle sizes. Moreover, the adverse environmental impacts associated with RHA can also be
reduced by utilizing the RHA in cementitious systems
