Indian based fly ash & international based fly ash: A review paper

Large amount of fly ash are produces from various thermal power plant and their disposal is becoming one of the major environmental challenge. Till few years back, fly ash generated by the burning of coal fired power plants was considered as material of very low value, useful only for landfill. But its usefulness as pozzolanic additive to cement is an important discovery. Therefore, studies have been carried out to reuse high volume fly ash as cement replacement in building materials. This paper presents an overview of the previous studies carried out on the use of high volume Indian & international fly ash as a partial replacement of cement in concrete mixtures. Fresh properties, mechanical properties, abrasion resistance, porosity, water absorption, compressive strength, flexural tensile strength of mortar and concrete mixtures containing high volume fly ash as cement replacement have been reviewed.