PARAMETRIC STUDIES ON VARIOUS FACTORS AFFECTING COMPRESSIVE STRENGTH OF GEOPOLYMER CONCRETE

Concreteisbecomingmoreandmoreindemandasinfrastructurefacilities are being developed. Its good. It is a known fact that themanufacture of OPC uses a big amount of energy and natural resourcesandalsoemitsasignificantamountofcarbondioxideintotheatmosphere.Therefore,itscrucialtocomeupwithalternativestoenvironmentallyfriendlyconcrete.Flyashisusedtocreatetheinorganic alumino-silicate substance known as geopolymer. India has alargesupplyofflyash,oneoftherawmaterialsusedtomakegeopolymerbinders,althoughithasonlyjustbeguntobeused.Therefore, in order to produce concrete that is more environmentallyfriendly, it is imperative to make the effort to use this by-product. Inordertoimproveitsoverallperformance,thisresearchdetailstheexperimentalworkcarriedoutbycasting20differentgeopolymerconcretemixturestoassesstheimpactofdifferentparametersimpactingitscompressivestrength.Therehavebeenstudiesonanumber of parameters, including the ratio of alkaline liquid to fly ash,sodium hydroxide concentration, sodium silicate to sodium hydroxideratio, curing time,curing temperature,dose of superplasticizer, restperiod, and additional water content in the mix. According to the testresults,compressivestrengthimproveswithincreasedcuringtime,temperature, rest time, and sodium hydroxide solution concentrationwhile decreasing with increased water to geopolymer solids by massand admixture dose. The workability of new geopolymer concrete isenhanced by the use of a naphthalene-based superplasticiser. It wasfurtherdiscoveredthatakeyfactorinreachingtheoptimumcompressivestrengthofthegeopolymerconcretemixisthewatercontent.