EXPERIMENTAL STUDY ON THE BEHAVIOUR OF CONCRETE IN REPLACEMENT OF CEMENT WITH PULVERISED FUEL ASH (COAL ASH) AND LIMESTONE POWDER

Large amount of coal ash and limestone powder are accumulating in countries all over the world most of these wastes are abandoned and causes certain serious environmental problems and healthhazards. These burned coal and coal combustion by product a quantity are increasing year to year the objectives of these experiment was to determine the possibilities of effective usage of construction materials. Pulverised fuel ashand limestone powder is an industrial waste material used as a partial replacement material in replace with ordinary portland cement in concrete. The pulverised fuel ashis used from 0% to 40% and limestone is used 10% replacement of cement in concrete in type 1 and in type 2 pulverised fuel ashand lime stone powder ash were replaced from 0 to 40% For M30 Grade of concrete. And these mixes are compared with normal concrete mix with OPC. Mechanical properties are studied compressive strength split tensile strength and carbonation test are carried out with different proportion of coal waste ash and constantly limestone powder as in 7 and 28 days .The test result shows that replacement upto 30% of coal waste ash with 10% LSP increases the performance of concrete as compared to conventional concrete. Carbonation test result was found to be good.