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Abstract
Concrete is the world most durable and reliable construction material which required large quantities of ordinary Portland cement. Ordinary Portland cement production is the major generator of carbon di oxide. . The production of ordinary Portland cement contributes 5-7% of total greenhouse gas emission and also demand of cement concrete is increasing day by day for satisfying the need of development of infrastructure facilities. Hence there is a need of using a alternate binder to make concrete which is eco- friendly and effort has been made to make new generation concrete called “Geopolymer Concrete” .Geopolymer concrete is an ecofriendly concrete in which ordinary Portland cement is replaced by mineral admixtures such as fly ash and GGBS which are the bi-products of thermal and steel plants. Geopolymer is a material resulting from there action of a source material that is rich in silica and alumina with alkaline solution. Geopolymer concrete is totally cement free concrete. In geopolymer fly ash and GGBS act as binder and alkaline solution act as an activator. Alkaline solution used for present study is combination of sodium hydroxide and sodium silicate. A grade chosen for the investigation were M30.The mix were designed for molarity of 13M based on sodium silicate.