Experimental Study on Combined Effect of Fly Ash and Pon d Ash on Strength and Durability of Concrete

Energy generation is increasing day by day due to rapid industrialization. Energy generation through thermal power plants is very typical now days. Fly ash (FA) from these thermal plants is available in large quantities in fine and coarse form. Fine fly ash is used in construction industry in some amount and coarse fly ash is subsequently disposed over land in slurry forms. In India around 160 MT fly is produced and only 40% of that is being utilized in different sectors. Balance fly ash is being disposed over land. Currently around 65000 acres of land is occupied by fly ash. It needs one acre of land for ash disposal to produce 1MW electricity from coal. The worldwide requirement of construction aggregate is estimated to be more than 40 billion MT and more than 3 billion MT of raw materials is required for cement production. Fly ash and pond ash utilization helps to reduce the consumption of natural resources. This paper presents laboratory investigation of concrete pro- duced using fly ash, pond ash (PA) and OPC53 grade. An attempt has been made to investigate characteristics of OPC concrete and combined fly ash- pond ash mixed concrete for various parameters like compressive strength, water permeability and rapid chloride penetration test (RCPT). Results of the laboratory investigation con- clude that the performance of concrete made up of combination of fly ash and pond ash is superior to that of Ordinary Portland Cement concrete. Index Terms— Ordinary Portland cement,fly ash, pond ash, river sand, compressive strength,water permeability test, Rapid chloride permeability test,