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Impact of the freeze-thaw cycles upon the heat and mass transfer properties of the technogenic cryogenic soil of the northeastern regions of the cryolithozone
Abstract.This article concentrates on the experimental research of the heat and mass transfer properties of the technogenic soil of Yakutia that are subject to freeze-thaw cycles. Definition is given to the technogenic soils according to the GOST 25100-95. The work cites the established fact of significant difference in the coefficient of filtration of naturally located soils of seasonal layer of thaw from indexes acquired in controlled conditions. It is substantiated that there is a need to research the heat and mass transfer properties of the technogenic soils with consideration of the cyclic impact of the low temperatures and changes in the cryogenic structure for a more complete correspondence with the northern conditions. The authors analyze the acquired data, approximate the experimental data via the methods of statistical processing and compare it with the data from other sources. The conducted research allowed determining the dependence of the thermophysical properties of the technogenic soils upon their moisture, temperature and loam content.
Keywords: freeze-thaw cycles, filtration, thermal conductivity, temperature, humidity, density, loam, frozen soils, technogenic substrates, diffusion coefficient
Article was received:19-12-2017
This article written in Russian. You can find full text of article in Russian here .