Utilization of Waste Byproducts in the Production of Green Geopolymer Concrete

The demand for cementless concrete in the construction sector is increasing by every day due to the global warming scenario of the world. In this study, industrial waste named GGBS along with Metakaolin has been utilized as the binders for the production of geopolymer concrete at varying proportions ranging from 0 to 100%. Another crisis that the world faces is the scarcity of river sand. To overcome the scarcity, the river sand is substituted with M-sand and Silica fume in various proportions. The optimum ratio of M-sand and SF was found to be 60:40, due to the performance in mechanical properties. The results show that the geopolymer concrete mix with 70% GGBS and 30% metakaolin has attained good mechanical properties when compared with conventional geopolymer concrete. The addition of metakaolin resulted in the acceleration in fresh concrete properties at a rate of 0.5% and 1% in workability and initial setting time, respectively.