AMALKAR.S.MANJUNATH1, BASUTKAR.M.SOMANATH2,M.V.RENUKADEVI3, KAUP.S.JAGADISH4

1) Assistant Professor, Rashtreeya Vidyalaya College of Engineering, Department of Civil Engineering, manjunaths@rvce.edu.in

2) Research Scholar , Rashtreeya Vidyalaya College of Engineering, Department of Civil Engineering, somanath_basu@yahoo.co.in

3) Associate Professor, Rashtreeya Vidyalaya College of Engineering, Department of Civil Engineering, renukadevimv@rvc

There is an increased demand for building materials like sand and aggregate, due to rapid urbanization and infrastructure development. This has led to shortage of materials like sand. As a result, exploitation of river sand is leading to degradation of river banks. In this context, Utilization of Construction and Demolition Wastes become important. A major component of demolished buildings happen to be Demolished Brick Masonry Wastes (DBM). Based on a report from Ministry of Environment and Forests, Government of India, it is estimated that the construction industry in India generates about 12-14 MT of wastes annually. 50% of this Construction and Demolition waste generated consists of masonry wastes. There is, hence an urgent need to process such wastes. Samples from wastes generated in Bangalore are first selected and then crushed to produce coarse and fine aggregates. The fine aggregate components are used in the preparation of cement mortar and its properties are compared with normal river sand based mortar. The fines are also used in the manufacture of concrete. It is also possible to produce building blocks after mixing the wastes with soil and cement. The potential of the use of such modified concretes and mortars is discussed.

Keywords: Waste Utilization, Environmental degradation, Demolished Brick Masonry(DBM).