ASSESSMENT OF INFLUENCE ON COMPRESSIVE STRENGTH OF M20 CONCRETE BY REPLACING COPPER SLAG AND WASTE GLASS POWDER AGAINST FINE AGGREGATES

HEMANT KUMAR¹, Dr. J. P. TEGAR²

P.G. Scholar, Department of Civil & Environmental Engineering, NITTTR, Bhopal, (M.P.) India¹

Professor & Head, Department of Civil & Environmental Engineering, NITTTR, Bhopal, India²

ABSTRACT

Sand is one of the most important constituent for preparation of concrete. Recently for conventional construction huge demand for sand is the major problem. Rapid extraction of sand from river bed creates many problems as decreasing water table, loss of vegetation, erosion of river bed and disturbance to aquatic life. We required a best alternative construction material to fulfill the demand of sand. Some of the waste products as copper slag, waste glass etc have been used as fine aggregate for production of concrete in the construction industries. This paper presents the effect of replacement of copper slag and waste glass powder as fine aggregate in place of sand on the properties of concrete and to find alternative ways conserving the environment and recycling of waste materials. Sand was replaced in M20 grade of concrete with percentages 0%, 10%, 20%, 30%, 40%, 60% and 80% by weight. The tests were conducted for properties of fresh as well as hard concrete. The test results indicated that copper slag and waste glass powder can be effectively used as fine aggregate in structural concrete up to replacement of 40%. The highest compressive strength obtained was 46.18N/mm² for 20% replacement (copper slag 10% & Waste glass powder 10%) after 28 days of curing. The workability of concrete increase as the percentage of copper slag and waste glass increases in the concrete mix.

Keywords: Concrete, Copper slag, Waste glass powder, Fine aggregate, Compressive strength