EFFECT OF REPLACING FINE AGGREGATE WITH BOTTOM ASH IN M40 GRADE OF CONCRETE WITH OPC-53S CEMENT

Abstract

There is an emergency need to promote sustainable cement concrete and its development by using alternative materials, to reduce the emission of greenhouse gases and for the disposal of vast bottom ash product from the power plants. In India there is a growing concern about scarcity of river sand which is a prime source of material used in the manufacture of cement concrete. In this context, this paper presentation establish the experimental results about strength and economic aspects of concrete, by partial sand replacement with bottom ash in the concrete. Also experimental results presented about the partial replacement of crusher dust and robo sand with bottom ash, as these products are treated as an alternative measures of natural sand. The aim of this project work is to efficient utilization of Industrial wastes for high strength and durable concrete mix. Experimental studies are conducted on M40 grade concrete prepared with 53 Grade special cement and replacement fine aggregate with bottom ash. The investigation on compressive strength of the concrete at different ages such as 7 days, 14 days and 28 days are observed when the bottom ash is replaced 0%, 10%, 20%, 30%, 40%, 50%, and 60% in the place of three control mixes of sand, robo sand and crusher dust which are treated as fine aggregate. The results showed that the optimum dosage of bottom ash when it is replaced with sand/ robo sand /crusher dust is 10% at 28days compressive strength of concrete. OPC 53 Grade special cement is selected for the purpose of attaining high early strength of concrete. The bottom ash is obtained from National Thermal Power Plants (NTPC) Parawada in Visakhapatnam District of Andhra Pradesh State. It has wide potential to utilize as a raw material for concrete brick industry, and for Ready mix concrete.