Experimental Studies on Strength Characteristics of GGBS Based Geopolymer Concrete

Global warming is created by the emission of CO2 into the atmosphere in various ways during the production and utilization of many materials. As a part of civil engineering we all know concrete is the important material in for construction. Concrete is made up of with Cement, Aggregates and water. Cement plays a prominent role by improving binding properties among the other ingredients of concrete. But production of OPC causes emission of harmful gases into the atmosphere and also major consumption of natural resources. As a part of our research a step is made towards producing of concrete without using OPC as a binding material. Hence instead of OPC we were used GGBS as binder material. NaOH and Na2SiO3 chemicals are used as activators. This study has been made with river sand and Granulated Blast Furnace Slag (GBFS) as fine aggregates and with regular crushed stone as coarse aggregates for manufacturing of Geopolymer concrete. Geo polymer concrete has been prepared for 8, 10 and 12 molarities and their mechanical behaviour is being observed for 3, 7 and 28 days.