A REVIEW ON UTILIZATION OF MINE WASTE ON BLACK COTTON SOIL

Abstract

Mine wastes are one of the chronic waste concerns. The volume of solid waste generated during mining process, is one of the main pollution concern. The presence of high concentration of heavy metals and acid producing mineral phases can endanger the environment if management of these wastes are not addressed properly. Mine wastes have numerous ecological effects viz Air, Land and Water. There is a great difficulty in finding space for the storage of wastes generated in enormous quantity. The review of past studies indicated that 50 to 60% of mine waste by volume can be used as coarse grained particle and 10 to 15% by volume as fine aggregate. Despite quite a lot of attempts to diminish the amount of waste, mine waste remains one of world's largest waste streams. Black cotton soil on the other hand is problematic due to the presence of momtmorillonite that imparts high swell-shrink potentials. These soils are very hard when dry but loose strength completely when wet. Pavement surface on poor soil subgrade show early distress causing pavement failure. The present study examines the utilization of these wastes as stabilizers for black cotton soil for unpaved road construction.