Experimental investigation on partial replacement of cement and coarse aggregate by rice husk ash and steel slag in concrete

Abstract

In this study, a comparison is made between the experimental characteristics and behaviour of concrete using controlled specimens, as well as aggregates and cement that have had some of their components partly replaced with steel slag and rice husk ash in varied quantities. The replacement of steel slag up to 75% does not have a major impact on the material's strength, while the replacement of RHA has led to a 30% increase in the material's strength. The cement is going to be employed in combination with steel slag that has had coarse particles partly replaced by RHA for varied percentages, and then the strength is going to be evaluated. On hardened concrete for controlled specimens and concrete with various replacements, compression strength tests, tensile strength tests, flexural strength tests, water absorption tests, and acid attack tests were carried out. Together with a comparative study of cost effectiveness and strength, we will also investigate the efficiency of the replacement. According to the results of the experiment, it is predicted that the strength of the sample for the various replacements will not be badly affected, and it is also possible that it will somewhat improve. This replacement would provide some benefits to the environment and might perhaps be an affordable or less costly technique of constructing concrete structures in the future. This project's goal is to expeditiously and securely utilize materials derived from solid waste in the construction of buildings and roads without compromising the structures' tensile or compressive strengths.