In the conditions of a gradient temperature field, lack of moisture saturation and the closed nature of the environment the soil freezing is characterized by the following parameters: cryogenic pressure in the saline (moisture saturated and non-saturated) soil subjected to freezing under the closed test scheme formed in proportion to ambient temperature and initial volume moisture content of the soil; cryogenic pressures occurring in saline moisture-saturated soils with moisture saturation coefficient more than 0.9 u.f. (with salinity level up to 0.24%) are rather high and can exceed 5-8 MPa; however, they do not reach the limit thermodynamic values; freezing of fine-grained non-saturated soil with moisture saturation coefficient less than 0.9 u.f. and salinity more than 1% is accompanied by sharp cryogenic pressure drop; pressure values do not exceed 1-2 MPa at moisture saturation equaling 0.9 u.f.; under the increase of the salinity of fine-grained moisture-saturated soil, the boundary value of the moisture saturation coefficient that determines the starting point of cryogenic pressure formation during soil freezing increases to 0.9 u.f. (at salinity 1%, the point where cryogenic pressure may be registered is 0.88 u.f.).
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