Use of Marble Slurry as Filler Material and Crushed Stone Waste as Replacement of Sand in Concrete Properties

Abstract

Green concrete is generally composed of recycling materials as complete or partial replacement for aggregate, cement, and admixture. Crushed stone is obtained as a by-product during the production of aggregates through the crushing process of rocks in rubble crusher units. By using this bye product as a substitute of sand in construction materials would resolve the problems caused by the large-scale depletion of the natural sources of river and mining sands. This paper reports the experimental study undertaken to investigate the influence of partial and complete replacement of sand with crushed stone, with addition of marble powder as an additive on the concrete properties. During the study, 160 number of cylinders and 22 prisms were prepared in which 10%and 20% marble slurry was added as additive; 25%, 50%, 75% and 100% sand was replaced by crushed stone and 10%, 20% marble slurry was used with combination of 25% and 50% crushed stone. The samples were tested for compressive test, tensile splitting test, slump test, flexural test, XRF, permeability test and modulus of elasticity test. The results observed that cylinders having 50% crushed stone with 10% marble slurry has an optimum strength of 3772psi almost 23% more than standard 1:2:4 concrete. The tensile splitting strength, modulus of elasticity test has also improved and slump test of the same sample was 1.75inch. The results of this study suggest that 50% replacement of sand by crushed stone along with the combination of 10% marble powder as additive shows 23% more strength and 2.6 times lesser permeability with 2% less cost as per ASTM standards