Concrete has occupied an important place in construction industry in the past few decades and it is used widely in all types of construction ranging from small buildings to large infrastructural dams or reservoirs. Cement is major ingredient of concrete. The cost of cement is increasing day by day due to its limited availability and large demand. At the same time the global warming is increasing day by day. In the present study an attempt been made on concrete and also an experimental investigation on the concrete using by replacing cement with FLYASH and GROUND GRANULATED BLASTFURNACE SLAG(GGFBS) to decrease the usage of cement as well as emission of concrete. Experimental studies were performed on plain cement concrete and replacement of cement with Fly ash is done. The main properties of flyash are fineness, specific gravity, chemical composition, carbon content etc. the fineness of flyash is important because it effects the workability of the concrete. Specific gravity does not directly effect concrete quality, it has value in identifying changes in other flyash characteristics. The variability of the chemical composition is checked regularly as a quality control measure. GGBS is a byproduct of the manufacturing of iron in the blast furnace can partially replace cement in concrete. GGBS hardens very slowly so it is generally used along with OPC in concrete. A typical combination of GGBS(70,80,90%) and fly ash is used in 10, 20 and 30%.
Bhavani et al. (Thu,) studied this question.