Experimental Study on Partial Replacement of Cement by GGBS and Fly Ash in Conventional Concrete

Abstract

Abstract: Cement concrete is widely used in industrial plants, civil infrastructures, wastewater treatment plants and pipelines. It is a highly prone to acid attacks from the surrounding environment. Since acidic environments will accelerate the deterioration of concrete, various types of polymer coating materials are being used to protect the concrete surfaces. Hence an attempt has been made in this investigation on partial replacement of cement with GGBS along with incorporation of fly ash of 20% of the volume of concrete. Various strength parameters of the concrete specimens are tested. The combination used is GGBS with 10%, 20%, 30%, 40% by the weight of cement for M25 grade concrete at an age of 7 days, 28 days and 56 days. Cubes are cast, curried and tested to assess the influence of partial replacement of cement with fly ash and GGBS and then found the optimum content as 20% of GGBS and fly ash 20% from the experimental results. Then final combination is 20% of cement with GGBS along with incorporation of fly ash of 20% percentages of the volume of concrete. The compressive strength values are increased by 10% than those of conventional concrete mixture at a mixture prepared with 20% GGBS and 20% Fly ash. Further increase in GGBS percentage with constant fly ash percentage proved its incompatibility nature where it is shown low strength when compared with controlled concrete mix. X-ray Diffraction (XRD) technique has also been used to get insights into the quality and composition of the concrete, aiding in the assessment of its suitability for specific construction applications.