Abstract
The article discusses the possibility of using ash from coal combustion at GRES-2 in the Pavlodar region to obtain ash-soil composite materials designed to strengthen the foundations of highways. The purpose of the study is to develop the composition of ash soil material with high physical, mechanical and operational characteristics. Within the framework of the study, the tasks were set to study the regularities of the formation of the structure of the material, as well as to develop the technology of its manufacture. The theoretical and practical significance of the work lies in the possibility of reusing industrial waste, reducing the environmental burden and the cost of building road infrastructure. A review of domestic and foreign literature on the use of fly ash in the construction industry was also carried out. Particular attention in the literature review was paid to studies carried out in Kazakhstan, where there are significant volumes of ash waste from thermal power plants and state district power plants, especially in regions with a developed energy industry, such as Pavlodar, Karaganda and East Kazakhstan regions. The results of the analysis show the relevance of processing ash into building materials in order to improve the environmental and economic efficiency of road construction. Keywords: fly ash, waste disposal, composite materials, industrial wastes, coal.