EXPERIMENTAL STUDY ON FLY ASH AND GGBS BASED GEOPOLYMER CONCRETE USING COPPER SLAG

Abstract

Geopolymer concrete (GPC) is prepared by using industrial waste like fly ash (FA) and ground granulated blast furnace slag (GGBS) replacing ordinary Portland cement (OPC). Geopolymer concrete is the most economical and ecofriendly replacement to traditional concrete. The alkaline solutions used for polymerization of concrete are sodium hydroxide (NaOH) and sodium silicate (Na2SiO3). A 10 Molarity solution is used for preparation of mix. In the present study different proportions of fly ash and GGBS are prepared as FA80 and GGBS20, FA90 and GGBS10 in percentages of total binding material and copper slag is replaced as fine aggregate in 0, 20, 40, 60, 80, 100%. The strength properties like compressive strength, split tensile strength and flexural strength are tested for 7, 28 and 90 days of ambient curing. The fresh concrete tests are also conducted. Comparing studies show that geopolymer concrete can be prepared at low cost comparing to that of OPC concrete and offers huge reduction in the carbon dioxide emissions.