EFFECTIVE UTILIZATION OF FOUNDRY SAND AND GROUND GRANULATED BLAST FURNACE SLAG IN GEOPOLYMER CONCRETE
Abstract
Nowadays, concrete is most widely used material used in construction industry. Global use of concrete is second after the water utilization. The component of concrete i.e. Cement, Sand, Aggregate, Admixtures are contributing the strength and various properties in concrete but various environmental issues are related with concrete. In which cement leads to affect environment by emission of CO2. Geopolymer concrete is the best example in which total replacement of cement can be done by fly ash and ground granulated blast furnace slag. Geopolymer concrete is a concrete which does not utilize any Portland cement in its production. Waste-foundry sand and Ground granulated blast furnace slag are the by-product of ferrous and nonferrous metal casting industries. Foundries successfully recycle and reuse the sand many times in a foundry in process of mould and core making and after reuse of sand is discarded as waste foundry sand which cannot be again use in casting along with Ground granulated blast furnace slag. In this study an effort is made to found out the effectiveness of used foundry sand as a partial replacement of fine aggregate in geopolymer concrete at various percent. A concrete made by using GGBS, Fly ash replacing cement totally and partially replacement of fine sand by Foundry sand at various replacement level done and the strength of these Geopolymerised foundry sand concrete carried out.
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