The primary goal of this work is to report the results of the experimental outcome of Geopolymer concrete (GEO-C) which is prepared and cured at room temperature. GEO-C is prepared using a blend of ground granulated blast furnace slag (GGSG) and F Class Fly Ash, and the replacement is ranged from 0% to 100% of binder material, to find the optimum dosage of binder material. Sodium Hydroxide (NaOH) and Sodium Silicate (Na2SiO3) which are alkaline in nature, used primarily as an activating agent for the polymerization process of geopolymer. Experiments were conducted on samples by fixing the NaOH concentration as 14M for optimum strength and the alkaline activator ratio is fixed as one. Mechanical properties of GEO-C like compressive strength, rupture modulus (i.e. flexural strength), and split tensile strength were evaluated at the ages 7, 14, 28 days. From the results, it is observed that with the addition of GGSG in the blend the compressive, flexural, and tensile strength increase but there is a drastic reduction in the workability of the mixture.

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