Performance Of Recycled Aggregate Concrete With The Inclusion Of Industrial Waste As Additives

Abstract

Urbanization and rapid growth in population has increased the quantum of waste generation. As per the reports of Central Pollution Control Boards (CPCB) [1] , India is producing about 23.75 million tons of construction and demolition waste (C & D) out of which only 5% is being processed. Hence large quantity goes as waste into dumping yards leading to environmental issues. Also globalization requires increased development of infrastructure to facilitate the needs of urbanization. The increase in development activities generates about 23% of concrete waste as per reports [1] that needs to be channelized and handled carefully. Industrialization has also led to the development of industrial waste such as fly ash, ground granulated blast furnace slag [GGBS], silica fume etc that are Industrial by products increasing the quantum of waste reaching dumping yards. Hence Industrialization requires sustainable solution that can be arrived by effective utilization of waste which reduces the burden on dumping yards and also fulfills the need of resources that are required for construction and development activities. Hence a pilot study is carried out by to arrive at recycled aggregate concrete (RAC) by using C & D waste as recycled coarse aggregates (RCA) and use industrial waste like silica fume and GGBS as partial replacement of cement to provide a sustainable solution for the alarming problem of Industrialization leading to global warming. In this work RAC was prepared for M40 grade with the inclusion of 10% of industrial waste for cement and partial replacement of coarse aggregate in the ratio of 0%, 10%, 20%, 30%, 40% and 50%. Mechanical behavior of RAC was studied to provide a sustainable solution for utilization of C & D waste and Industrial waste.