Features of zeolite-containing siliceous-carbonate rocks of Dagestan

Abstract

Relevance. The content of the OCT (opal-cristobalite-tridymite) phase and zeolites in the siliceouscarbonate rocks of Dagestan reaches a total of 50% with a calcite content above 30%. The laboratory studies of these rocks were conducted and OCT is about 30%, zeolites up to 27%, calcite up to 26%. As a result of research, it has been established that zeolite-containing siliceous-carbonate rocks, common in Eocene deposits on the territory of the Republic of Dagestan, can be used to obtain thermal insulation materials. Aim. The aim of research is to consider these rocks as raw materials for the production of building materials, in accordance with the results of laboratory and technological studies. Research methods. The strength of the resulting products in compression and bending, as well as density and thermal properties were determined. The study of thermal insulation characteristics was carried out in accordance with GOST 16381–77 “Thermal insulating materials for construction. Classification and general technical requirements”.” The mineral composition of the samples was determined by the method of x-ray phase analysis, and the chemical composition of the studied sample under study was also obtained. Results. The results of the study of raw materials showed that carbonate-siliceous zeolite-containing rock, which in composition and properties corresponds to the material of the LT-1 sample, can be used as composite mixtures with a binder for the preparation of solid mortars of low thermal conductivity, lightweight structural thermal insulation and other materials.