In this article, the genesis of the technogenic product that determines its composition, structure, state, and properties is analyzed. The possibility of using technogenic waste from Krasnoyarsk HPS in the production of building materials was considered. It is shown that considerable fluctuations in the chemical composition and structure of the ash of CEP-2 necessitate additional influence on it in order to stabilize the composition and properties, and also to prevent the negative effect of CaO, caused by late hydration due to the vitreous surface shell. To remove the danger of destructive processes in hardening products of ash-based building materials by neutralizing free calcium oxide, as the primary causes of stone structure defects, stabilization of ash composition and the possibility of using it as a filler in cement compositions (concretes, solutions), it is advisable to activate it in a hydrodynamic disperser. A study of the phase composition of hardening products of cement-free ash-free formulations showed that after activation it is more homogeneous, with a small number of reflections, which indicates greater homogeneity and stability of the structure. The increase in strength characteristics is also related to the uniformity of the change in the volume of activated ash.