RESULTS OF PHYSICAL MODELING OF FREEZING OF HEAVING SOIL
V.G. Cheverev1, A.V. Brushkov1, E.V. Safronov1, Yu.A. Kaynov2, A.L. Fedotov2
1Lomonosov Moscow State University, Leninskie Gory 1, Moscow, 119991, Russia
2Research Institute of Pipeline Transport, Sevastopolsky prosp. 47a, Moscow, 117186, Russia
Keywords: physical modeling, freezing, heaving, characteristics of clay, process parameters
Abstract
The article presents the results of physical modeling of soil freezing in laboratory. The samples of silty clay of kaolinite composition were used as model soil. The main characteristics of the component and phase composition of water, as well as the heat and mass transfer and deformation properties of the soil were experimentally determined. During the physical modeling, parameters of the freezing process, differential heaving of frozen and shrinkage of thawed zones, heat and moisture transfer, and pore pressure were monitored. The appearance of segregated ice in the freezing soil, layered axial and horizontal deformation, and the dynamics of density and water content of water-saturated soil samples over time were determined using position markers and time-lapse video.
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