This study presents the results of experiments on the development of formulations of geopolymer binders based on industrial waste - enriched ashes of thermal power plants and granulated metallurgical slag. The technology has great potential in solving the problems of resource and energy conservation, as well as reducing the impact of exhaust gases and heat on the environment. Reducing carbon dioxide emissions compared to traditional cement production technology increases interest in this study from low-carbon concrete manufacturers. Finding the optimal percentage of the alkaline activator used is one of the main factors in the formed geopolymer system based on enriched fuel ash and ground metallurgical slag, since the alkali activator will be decisive in the process of achieving maximum bending and compressive strength, as well as ensuring stable properties during operation of the geopolymer stone. The results showed that the concentration of the alkaline sealer determines the dissolution of the aluminosilicate phase in the ash and, at the same time, the active structuring of the geopolymer structure and its technical and operational properties.