Utilization of black stone powder as fine aggregate in concrete

Cement, sand and aggregate (coarse) are the primary needs for the construction industry, sand plays major role in the preparation of mortar and concrete. But now there is scarcity of river sand, hence there is need to find the alternative material to river sand. Many alternatives have been suggested by many authors and researchers. Black stone powder is one among them and this black stone powder is produced during the processes like cutting, polishing, grinding etc. of black marble stone (kadapa stone). To overcome the problems like, shortage of river sand and also dumping of stone waste in and around the factories and outskirts of town, it would like to use the black stone powder as alternative material to sand in concrete. In this experimental work the sand is replacing by black stone powder in various proportions (0%, 25%, 50%, 75% and 100%). In order to observe the behaviour of black stone powder concrete it is proposed the conduct tests on cubes and cylinder to find out compressive and split tensile strengths. The test results were then compared with various codes such as IS456-2000, ACI318-M-11 and GB 50010-2002. The results showed that 50% replacement of sand by black stone powder is effective. Regression models are developed to assess the strengths for the experimental results.