This review article discusses the factors influencing the compressive strength (Cst) of fly ash-based geopolymer concrete (FAGPC). The use of cement has increased significantly due to the expansion of the infrastructure sector, but cement production is energy-intensive and emits greenhouse gases. Geopolymer concrete (GPC) is an alternative that reduces environmental impact. FAGPC has better mechanical properties than traditional concrete, with Cst being the most important engineering property. The compressive strength is affected by several factors, including the number of binder materials, the ratio of alkaline activators to binder (AL/Bi), the amount of additional water, the dosage of superplasticizers, the ratio of alkaline activators (AAR), the concentration of sodium hydroxide (SHy), curing temperature, and curing duration. The review aims to analyze how these parameters affect the compressive strength of FAGPC. The results show that the compressive strength is mainly influenced by curing temperature, the amount of sodium hydroxide, and the amount of alkaline in the binder. Concrete is the second most commonly used material worldwide, with ordinary Portland cement (OPC) being the main component. OPC contributes significantly to CO2 emissions. GPC is an alternative with lower environmental impact. Geopolymers are inorganic polymer binders made from alkaline activator solutions and aluminosilicate materials. FAGPC is made from fly ash, which is a byproduct of coal combustion. Fly ash is classified as class F or class C based on its oxide composition. Class F fly ash has a low calcium content, while class C has a higher calcium content. FAGPC is a promising alternative to traditional concrete due to its durability and mechanical properties. The study highlights the importance of various parameters in determining the compressive strength of FAGPC.This review article discusses the factors influencing the compressive strength (Cst) of fly ash-based geopolymer concrete (FAGPC). The use of cement has increased significantly due to the expansion of the infrastructure sector, but cement production is energy-intensive and emits greenhouse gases. Geopolymer concrete (GPC) is an alternative that reduces environmental impact. FAGPC has better mechanical properties than traditional concrete, with Cst being the most important engineering property. The compressive strength is affected by several factors, including the number of binder materials, the ratio of alkaline activators to binder (AL/Bi), the amount of additional water, the dosage of superplasticizers, the ratio of alkaline activators (AAR), the concentration of sodium hydroxide (SHy), curing temperature, and curing duration. The review aims to analyze how these parameters affect the compressive strength of FAGPC. The results show that the compressive strength is mainly influenced by curing temperature, the amount of sodium hydroxide, and the amount of alkaline in the binder. Concrete is the second most commonly used material worldwide, with ordinary Portland cement (OPC) being the main component. OPC contributes significantly to CO2 emissions. GPC is an alternative with lower environmental impact. Geopolymers are inorganic polymer binders made from alkaline activator solutions and aluminosilicate materials. FAGPC is made from fly ash, which is a byproduct of coal combustion. Fly ash is classified as class F or class C based on its oxide composition. Class F fly ash has a low calcium content, while class C has a higher calcium content. FAGPC is a promising alternative to traditional concrete due to its durability and mechanical properties. The study highlights the importance of various parameters in determining the compressive strength of FAGPC.