Study on properties of concrete using slag as partial replacement of cement

Abstract

There are numerous greenhouse gases released during cement manufacture that contribute to global warming. Researchers, therefore, concentrate on waste materials that have binding properties that can replace cement without sacrificing its strength. The current paper study's major goal is to examine the strength of the concrete when Ground Granulated Blast Furnace Slag (GGBS) is used to partially replace cement. GGBS is a finely powdered iron slag by-product of the steel-making industry. The mechanical characteristics of M40 grade concrete with partially replaced cement of 30%, 40%, and 50% by GGBS are examined in this study. All mix design specifications and material test data are carried out per IS codes, for a curing time of 7, 14, and 28 days, compression, splitting tensile, and flexural tests were performed on the cube, cylinder, and prism, respectively. The obtained test result of GGBS concrete was compared with control concrete to arrive at an optimum dosage of GGBS. The compressive and tensile strength of GGBS concrete increases up to 40% partial substitution of cement with GGBS, beyond which it begins to reduce, and in the case of flexural strength, there is a sustained growth in flexural strength.