The possibility of obtaining effective wall materials and technological lightweight products for high-temperature insulation by introducing the expanded vermiculite into the ceramic mass is investigated. Mineralogy of used clays and vermiculites was studied. They are represented by minerals of the same class, and therefore weak adhesion of smooth surfaces of vermiculite grains is compensated by common genetic origin with the matrix of the basic material of the composite. Thermotechnical studies of the process of swelling of vermiculite in a quartz furnace showed that to obtain a relatively high mechanical strength of vermiculite grains, it is necessary to select the maximum temperature and the mode of swelling, so that the planar shape of vermiculite plates remains and there is no pronounced warping. The degree of thermal delamination is influenced by the particle size, the increase of which entails a deterioration in physical and mechanical properties. The introduction of a high percentage of vermiculite additives in the charge allows to obtain lightweight thermal insulation products.

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This article presents the results of experimental studies aimed at improving the physicomechanical properties of effective hollow ceramic stones using various technological methods that will disperse, homogenize and structure the ceramic mixture by introducing industrial waste with high alumina content, dispersed reinforcement, and also mechanical activation of the molding material, accompanied by the fragmentation of clay particles to a colloidal degree of dispersion, allows eliminating the aging process. The main molding characteristics of the investigated mixtures were determined, X-ray phase analysis of ceramic masses and a shard of the control composition was performed and after dispersion, activation modes were worked out, strength characteristics of ceramic samples made of dispersed clay raw materials were determined.

The article considered the process of global warming, which is mostly represented in the northern territories of Eastern Siberia. A growth of snowfall gradient and wind load gradient, resulting in building up of snowy thermal insulation layer, which prevents ground freezing, is analyzed. According to the preliminary calculations the forecast of thawing of the permafrost will completely degrade in the second part of the 21st century. The increase of the temperature and the strength of the active layer lead to the building and structures deformation. Together with natural factors technogenic and anthropogenic factors have a great impact: effect from building operation, improper handling of pile-foundation (restricted ventilation of crawlway, no provided runoff), destruction of networks. The simulation model of climate fluctuation influence on thawing of the permafrost was developed. The melting process or correspondingly crystallization takes place during thawing/freezing of the permafrost.