THE EFFECTS OF REPLACEMENT OF CEMENT AND SAND IN CONCRETE BY MARBLE POWDER by Himanshu Sharma
Marble powder (MP) is a fine powder, formed as a waste product of marble sawing and shaping and can not be recycled due to problems that effects the environment. There is a possibility of using marble powder as partial replacement of cement and sand in concrete mix. In this study, the possibility of using marble powder in cement and concrete production was examined by studying the effects of blending the marble powder with cement and sand and checking the physical properties of fresh and hardened concrete. In studying the performance of concrete, a total of eighteen concrete mixes were prepared with replacement of cement and sand with marble powder ranging from 5% to 20% at an increment of 5% by weight. For each replacement value, two classes of concrete, M-35 and M-40, mixes were prepared for both cement and sand replacement cases. The investigation indicates that replacement of cement by marble waste powder for 5% value, in concrete production, results increase in comparable compressive strength as of concrete specimens without marble powder with slight slump reduction for both M-35 and M-40 classes. Increment of replacement beyond 15%, in concrete production, results in reduction of compressive strength and slump. Replacement of sand by marble powder from 5-20% , in concrete production, results in similar and mostly enhanced performance than the control concrete specimens; with slightl increase in compressive strength and slight slump improvement in both mixes. The Split tensile strength of Cylinders are increasing with addition of marble powder up to 15% when replaced by weight of cement and after that addition of waste marble powder it decreases the Split tensile strength .