It is being investigated in this study how different source materials and NaOH concentrations affect the strength of geopolymer concrete to determine how different source materials and NaOH concentrations affect the strength of the concrete. For two other binders, 360 and 400 kg/m3 (replacing flyash with GGBS with 70-30, 60-40, and 50-50) with different A/B ratios (0.45 and 0.5), the compressive strength of specimens is investigated for 7, and 28 days (outdoor curing and oven curing at 60 °C for 24 hours) following an alkaline solution made of NaOH and Na2Sio2, under an alkaline solution made of even though higher GGBS concentrations have a detrimental influence on workability, the combination of fly ash and GGBS during the outdoor curing process can result in increased strength and suitability for particular applications, according to the manufacturer. Therefore, it is feasible to cure specimens in real-time applications, despite oven curing providing the most substantial potential result.