ON THE MECHANISM OF CRYOGENIC HEAVING OF CLAY SOILS
A.G. Alekseev1,2, V.G. Cheverev3
1"Joint Stock Company - Research Center of Construction", Moscow, Russia
2Moscow State University Of Civil Engineering (National Research University), Moscow, Russia
3Lomonosov Moscow State University, Moscow, Russia
Keywords: cryogenic heaving, mechanism, mass transfer, loam, laboratory studies
Abstract
The article presents the results of a theoretical analysis and laboratory studies of the zonality of the multidirectional deformation process of heaving of freezing soils using the example of light sandy loam widespread in the seasonal freezing-thawing layer in Russia. Ideas about the characteristic zones of freezing soil are developed, namely, a cryogenic contraction zone is added, the mechanism of its formation is substantiated, and the role in cryogenic heaving of soils is shown. The results are important for the physical formulation of a mathematical model of freezing and heaving of clay soils, taking into account heat and mass transfer and multidirectional deformations, in relation to the fundamentals of geocryological forecasting of the stability of buildings and structures in the area of distribution of frost-susceptible soils in the cold regions of Russia.
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