Published Paper Details:

The utilization of supplementary cementitious materials is well accepted because of the several improvements possible in the concrete composites and due to the overall economy. With the increased industrialization, generation of industrial by-products has increased significantly. There are many types of industrial by-products depending upon the industry. Utilization of such types of by-products has become an enormous challenge. One such type of by-product is Ground Granulated Blast Furnace Slag (GGBS) which is produced from the blast-furnaces of iron and steel industries and Fly ash is a fine gray powder consisting mostly of spherical, glassy particles that are produced as a by-product in coal-fired power stations. Therefore, Cement with GGBS and Fly ash replacement has emerged as a major alternative to conventional concrete and has rapidly drawn the concrete industry attention due to its cement savings, energy savings, cost savings, environmental and socio-economic benefits. This research evaluates the strength gaining characteristics of hardened concrete by partially replacing cement by various percentages of GGBS and Fly ash for M25 grade of concrete at different ages. In this paper our study is mainly confined to evaluation of changes in both compressive strength and weight reduction of cement in Seven different mixes of M25 Grade composite concrete by replacing 50% cement by GGBS and Fly ash in different proportions. The Compressive Strength and Split Tensile Strength of mixes are determined by these cubes and cylinders for 7days, 14days and 28 days and their respective compressive strength and split tensile strength had observed and up to major extent we can conclude concrete made by that Fly ash and GGBS had good strength and durable properties compared to conventional concrete.