Dissolution load-settlement behaviour of saline soil and compression criterion for the natural foundation of high-speed railways

Ma, Deliang; Feng, Huaiping; Yuan, Yaxian; Chang, Jianmei; Chang, Jianfang

doi:10.1007/s10064-022-02878-7

Cited by 4 publications

(1 citation statement)

References 24 publications

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“…Due to the migration of water and salt, the salinity distribution in practical engineering is quite different, which causes enormous harm to large-scale water diversion projects, such as canals and slopes etc. [22][23][24][25][26][27]. At present, there are many studies on the loess in the monsoon area in the reports [28][29][30][31], and the research on Ili loess mainly focuses on the mechanical properties under cycling test conditions of dry-wet [32,33] and freeze-thaw [34,35], respectively.…”

Section: Introductionmentioning

confidence: 99%

Study on the Unified Mechanical Properties of Ili Undisturbed Loess under the Influence of Soluble Salt

Niu,

Zhao

et al. 2023

Sustainability

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Through three stress path tests of unsaturated Ili undisturbed loess, the effect of soluble salt content on the deformation of net mean stress, suction, and deviated stress were investigated. The mechanical properties of the normalized compression curve, soil water characteristic curve and critical state line were revealed. The test results indicate that: in the isotropic compression test, the normal compression curves controlling different suctions can be characterized by using the initial void ratio and the yield net mean stress, and can be described as a two-parameter exponential function. In the triaxial shrinkage test, the soil water characteristic curves controlling vary net mean stresses are dimensionless by using saturated moisture and air entry value, and the normalization formula can be characterized by a single parameter exponential function. In the consolidation shear test, the corresponding effective net mean stress is calculated by suction and saturation. The critical state lines under the unsaturated condition controlling vary suctions can be described as the critical state line under the saturated condition on the plane of effective net mean stress and deviator stress. When the effective net mean stress is constant, the critical state lines under the unsaturated condition can be characterized by the degree of gas saturation and the ratio of unsaturated void ratio to saturated void ratio. The research will offer reference pointing at the regulation and utilization of water and salt in the loess region of Central Asia, so as to better guarantee the sustainable development of saline-alkali land project construction.

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