Influence of salinity on rheologic and strength properties of frozen soils in Yamal

Kutergin, V. N.; Kal’bergenov, R. G.; Karpenko, F. S.; Leonov, A. R.; Merzlyakov, V. P.

doi:10.1007/s11204-012-9175-7

Cited by 7 publications

(2 citation statements)

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“…The present study is dedicated to addressing this issue. In general, the determination of mechanical and strength properties of frozen soils containing dissolved salt has been addressed in numerous studies within the field of permafrost science [6][7][8][9][10][11][12][13][14][15][16][17]. Previous studies have explored the influence of temperature and unfrozen water content on soil strength properties [6], investigated the time dynamics of frozen soil strength properties [7], and examined changes in mechanical and strength properties under high-cycle temperature loading conditions [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, the impact of soil salinity on the structural integrity of frozen soils under low confining pressures within the Mohr-Coulomb criterion framework is inadequately explored in the literature. Kutergin et al [10] determined cohesion and the angle of internal friction for eight different concentrations of dissolved salt in frozen samples of clays and loams from Upper Pleistocene and Middle Pleistocene marine sediments of the Salekhard Formation. Ogata et al [11] investigated the effects of salt concentration on the strength and creep behavior of artificially frozen sands and clays, exploring the dependence of compressive strength on unfrozen water content in soils.…”

Section: Introductionmentioning

confidence: 99%

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Influence of soil salinity on the bearing capacity of the frozen wall

Semin,

Levin,

Bublik

et al. 2024

Frattura Ed Integrità Strutturale

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The article describes the results of laboratory studies on the unfrozen water content and ultimate long-term strength of frozen clay and chalk samples in the temperature range from −10 to −25 °C. The soil samples contained dissolved salt in the pore space, with three types of salts (NaCl, KCl, and CaCl2) being considered. The findings indicate that the influence of the content and type of dissolved salt on the ultimate long-term strength of soils is realized indirectly through the unfrozen water content. In this case, the soil freezing characteristic curve in the region of negative temperatures significantly depends on both the type of dissolved salt and its quantity. The experimental data obtained were used to parameterize the model and calculate the maximum bearing capacity of the frozen wall (FW) in the presence of dissolved salts in the volume of frozen soils. It has been demonstrated that the decrease in the maximum FW bearing capacity is substantial with the appearance of dissolved salt in the pore space of the soils. This decrease is at-tributed to the combined effects of two factors: 1) a reduction in the FW thickness and 2) a decrease in the frozen soil strength due to an increase in the amount of unfrozen water content in the soil pore space. The second factor is deemed more significant.

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