The study focuses on how the amount of fly ash; the concentration of an alkaline solution and the curing time determine the mechanical properties and workability and durability of geopolymer concrete (GPC). The conducted study has a few pioneering elements, such as a systematical comparison of the molarity level (8M, 12M, 16M), the Alccofine as an additional source, and Decision Tree regression as a predictive model. The findings of the experiments highlight that the higher the fly ash content (325 to 400 kg/m 3), the better will be the result regarding the workability of GPC as well as the compressive strength, split tensile strength, and the flexural strength of GPC. What is more, the increase in the molarity (16M and 28 days of curing gives the most advantageous results). Stress strain analysis shows the elastic nature of the concrete where there is softening of the material beyond the peak stress. The water absorption test reveals that the elevated state of fly ash results in lesser level of porosity, which adds toward improvement in density and strength. Predictive model indicated the ideal accuracy based on R squared value of 0.98, which supported the fact that all variables had a strong relationship with compressive strength. The current research encompasses the possibility of maximizing fly ash content, molarity and curing to produce super performance, sustainable geopolymer concrete which offers an alternative to the conventional cementitious materials.
