Experimental study on the mechanical behaviour of sintered fly ash aggregate concrete with steel fiber

Abstract

Management of industrial waste is one of the most important environmental issues. In India, the generation of electricity is overwhelmingly dependent on combustion of high-ash coal and as a result fly ash is produced in large amount. Hence it is proposed to use the fly ash, an industrial waste product in concrete for partial replacement of coarse aggregate. However, as the concrete is weak in tension, the concrete is reinforced with various fibres. This project investigates about the behaviour of light weight fly ash aggregate concrete reinforced with steel fibres. The light weight fly ash aggregates were replaced for natural coarse aggregate in 0%, 40% and 60% (by weight) and steel fibres were added to the concrete in 0.5% by weight of concrete. Properties of fly ash aggregates were studied and compared with the conventional natural aggregates. Based on IS: 10262-2009, mix design for M30 grade concrete was done and it was arrived as 1:2:2.26. The standard specimens were cast and tested to ascertain the mechanical properties (compressive, tensile and flexural strength) of fly ash aggregate concrete.