jste.6.4.13911 Prediction of Setting and Strength Characteristic of Binary Blended Geopolymer Matrix A.M.N. Kashyap T. Chandrasekhar Rao N.V. Ramana Rao Journal on Structural Engineering 2320-2343 6 4 16 22 10.26634/jste.6.4.13911 Geopolymer Mortar, Normal Consistency, Setting Times, Fly Ash, GGBS The production of cement generates large amount of carbon dioxide. Normally, conventional concrete is manufactured with Portland cement, which acts as a binder. The production of cement emits CO2 into the atmosphere, which is a greenhouse gas and causes environmental pollution. In view of this, there is a need to develop sustainable alternatives to Portland cement utilizing the industrial by-products, such as fly ash, Ground Granulated Blast furnace Slag (GGBS) which are pozzolonic in nature. It has been established that fly ash can replace the cement partially. In this context, a new material was developed known as “Geopolymer”. In this study, various parameters on the short term engineering properties of fresh and hardened properties of Geopolymer Mortar were studied. In the present investigation, cement is replaced by geopolymer source material (fly ash and GGBS) and water is replaced by alkaline activator consisting of Sodium Silicate and Sodium Hydroxide of molarity (12 M). The ratio of sodium silicate to sodium hydroxide adopted was 2.5. The test results showed that final setting time decreases as the GGBS content in the mix increases and also these is increase in compressive strength. December 2017 - February 2018 Copyright © 2018 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=13911