INFLUENCE OF MARBLE WASTE POWDER AS PARTIAL REPLACEMENT OF CEMENT IN CONCRETE

Abstract

Construction industry uses Portland cement which is known to be a heavy contributor to the CO2 emissions and environmental damage. Incorporation of industrial wastes like silica fume (SF) and fly ash (FA), marble powder as supplementary cementing materials (SCMs) could result in a substantial reduction of the overall CO2 footprint of the final concrete product .With increasing industrialization, the industrial byproducts (wastes) are being accumulated to a large extent, leading to environmental and economic concerns related to their disposal (land filling). Cement is an energy extensive industrial commodity and leads to the emission of a vast amount of greenhouse gases, forcing researchers to look for an alternative, such as a sustainable building practice. The present work is directed towards developing a better understanding on strengths characteristics of concrete using marble dust powder as a partial replacement of cement. Not much of the work has been carried out on the split tensile strength and flexural strength concrete using marble powder as partial replacement of cement so this Dissertation work is carried out with M40 grade concrete for which the cement is replaced by marble powder by 0%, 5%, 10%, 15%, 20% by weight of cement. For all the mixes compressive, split tensile strengths are determined at different days of curing. Only 3 cubes were casted for various percentage cement with marble powder for 28 days. The results of the present investigation indicate that marble dusts incorporation results in significant improvements in the compressive and split tensile strengths of concrete upto 10% of replacement.