The study examines the theoretical aspects of the structure formation of reinforced cohesive soils. The analysis of the most promising methods of chemical strengthening of soils with mining waste has been carried out. The paper provides information on the selection of the composition of a complex binder based on lime-clay soil. The relevance of the study is due to the fact that the construction industry needs areas suitable for development. This paper describes the methods of mineralogical and chemical analysis, X-ray diffraction analysis, electron microscopic examination and fluorescence analysis, and also shows a new technology for strengthening clay soils with lime, simplified compared to the mechanical activation method. In the course of the research, it was possible to determine the optimal composition of soil concrete. This work also confirms the possibility of using these compounds in 3D technology in construction.