Studies on mechanical and durabilityProperties of geopolymer concreteIncorporated with bacteria Extracted from manufactured sand

Abstract

It is well known fact that during the manufacturing of cement, the newlineCarbon dioxide emission is generally high. In order to reduce CO2 emission newlineand preservation of natural resources, supplementary cementitious materials newline(SCMs) such as fly ash (FA), ground granulated blast furnace slags (GGBS), newlineare being used as replacement of cement in different proportions. Recently, newlineGeopolymer concrete (GPC) is being produced by utilizing FA, GGBS or newlinecombined, alkaline sludges and other materials. GPCs have significant newlineenvironmental and ecological benefit. The materials used in GPC include FA, newlineGGBS, alkaline sludges and other materials. River sand is conventionally newlineutilized as fine aggregate in concrete for many decades. Due to significant newlineincrease in demand and depletion of river sand, along with its restrictions, it newlinehas become necessity to search suitable alternative. The alternative materials newlinefor river sand include Manufactured sand (M sand), industrial by products, newlinerecycled aggregates, etc. Among these materials, M sand is presently being newlineused largely as an alternative to river sand. The process of concrete damage newlineinitiates in the early age of the structure and also during its life time. Though newlinesynthetic materials are used for crack remediation, most of them are not newlinecompatible with the parent material. An alternative repair of concrete newlinestructures is through mineral producing bacteria and the process is referred to newlineas biomineralization. In order to reduce the repeated or little modified newlineexperiments, data driven models are important to optimize the experiments. newline