Experimental Investigation On Mechanical Properties Of Concrete With Partial Replacement Of Fine Aggregate

Abstract

Industrial by-product materials are the most significant partially or fully substitute of fine aggregate in construction industries in these decades. This research investigates the workability and strengths of M-sand-50%, Copper slag-30%, Bottom ash-20%, and Steel slag-20% partially replaced by fine aggregate in concrete. The M-30 grade of concrete was prepared by single, binary & ternary combinations of a total of thirteen different mixes. Ordinary Portland Cement OPC 53 Grade, adopting a water-cement ratio of 0.42 constant, and Superplasticizer Conplast SP-430 were used for better workability and to maintain a slump of 50-75mm for all concrete mixes. The properties examined in the study are workability by using slump test and Mechanical properties such as Compressive, split tensile, flexural strength, and modulus of elasticity of concrete. The result shows that the concrete mixes with M-sand, Copper slag, and Steel slag had better workability, and all the Bottom ash concrete mixes had higher water demand adjusted with a Superplasticizer. The concrete with Copper slag-30% single combination mix had the optimum strength of compressive, split tensile, flexural, and modulus of elasticity compared to the conventional concrete and all other combination mixes.