An experimental study was conducted on the slag based geopolymer concrete in both plain and steel fibre reinforced concrete. The various types of curing regime like controlled room temperature, hot air oven at 50°C, 100°C and steam chamber 75°C were adopted to check the performance of the concrete in the compressive strength. The concrete with different binder to total aggregate ratio (B/Ta) of 0.25, 0.33 and 0.45 was used. Based on the results, controlled room temperature curing was adopted for further study. To enhance the strength steel fibre was added in 0.5%, 1% and 1.5% of mass of the concretein the geopolymer concrete. A polynomial regression equation was developed for all the mixturesfrom the test results to predict the 3, 7, 14, 28, 56, and 90 days strength from the one day strength. This will reduce the dependency on experiments. © Research India Publications.