Experimental study on shear characteristics of the silty clay soil-ice interface

Huang, Wanjun; Mao, Xuesong; Wu, Qian; Chen, Linlin

doi:10.1038/s41598-022-23086-z

Cited by 5 publications

(5 citation statements)

References 17 publications

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“…For Hamelin Creek (Alberta), slope stability analyses were conducted by varying soil properties and no water table. For the partially frozen soil, the shear parameters (c = 40 kPa and  = 30°) were based on a similar soil (Huang et al, 2022). The FOS was found to be 0.98 for c = 6 kPa and  = 18° thereby validating the analysis of Tweedie et al (2004).…”

Section: Analysis and Discussionsupporting

confidence: 73%

Parametric Design and Field Behavior of Earthen Structures

Paranthaman¹,

Azam²

2023

J ENVIRON INFORM LET

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The stability of earthen structures is governed by field uncertainties arising from material properties, environment loading, and slope geometry. This research devised a systematic approach to capture the effects of field uncertainties on the stability of natural and manmade slopes. New design charts were developed by incrementally changing slope geometry and randomly generating shear strength parameters. Subset simulation was used to determine the safe range of soil properties for various slopes. The charts were applied to three published case studies with distinct triggering mechanisms resulting from complex field settings. All of the investigated slopes were found to be stable (factor of safety (FOS) > 1.0) under the reported geometry and shear strength parameters while assuming no water table. The effects of soil properties’ variation and environmental conditions on fluctuating water table were captured through history matching. Results indicated three distinct failure mechanisms: foundation settlement of a glacial moraine till (Vernon, British Columbia) due to an increased pore water pressure during construction of the compacted fill (FOS = 1.45 without berms and 2.24 with berms); instability in the natural cut (FOS = 0.98) comprising layered glacio-lacustrine clays (Labret, Saskatchewan) due to saturation of the entire slope resulting from a long duration rainfall; and collapse of a compacted fill (FOS = 0.98) on a glacial moraine till (Hamelin Creek, Alberta) due to soil saturation arising from thawing of a frozen layer in the slope. This validation illustrates that the new approach fully captures environmental loading (resulting in water table variation in the slope) and partly captures construction practice and site geology via soil properties.

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Section: Analysis and Discussionsupporting

confidence: 73%

Parametric Design and Field Behavior of Earthen Structures

Paranthaman¹,

Azam²

2023

J ENVIRON INFORM LET

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“…The parameters η1, η2, η3, and η4 are shown in Table 5. Note that the friction angle decreases as the temperature drops from −1 °C to −2 °C; the same conclusion has been reached in the studies of the frozen silty soil-structure interface [45,46]. The ice crystals fill the pores in the soil near the interface, and the roughness of the interface is reduced by the formation of ice aggregates.…”

Section: Variation Of the Peak Shear Stress With The Number Of Cycles...supporting

confidence: 71%

“…The image of the specimen surface after testing also confirmed the existence of ice aggregates on the interface (Figure 11). On the contrary, Huang et al [45] and Shi et al [47] studied the ice-soil interface, and they found that the friction angle increases with decreasing temperature. The formation mechanism of the friction angle of the two interfaces is different.…”

Section: Variation Of the Peak Shear Stress With The Number Of Cycles...mentioning

confidence: 98%

“…The variation of the peak shear stress with temperature under different normal stresses is shown in Figure 10, and the data in previous publications are quoted and compared with the frozen cement-treated sand-concrete interface. Wen et al [44] conducted direct shear tests on the adfreeze interface between silt and concrete with a moisture content of 21.5%, and Huang et al [45] studied the silty clay soil-ice interface with a moisture content of 23%. It can be seen that the peak shear stress of the three interfaces increases with decreasing temperature when the normal stress is less than 500 kPa.…”

Section: Variation Of the Peak Shear Stress With The Number Of Cycles...mentioning

confidence: 99%

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Cyclic Shear Behavior of Frozen Cement-Treated Sand–Concrete Interface

Pan

Yang

et al. 2022

Materials

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The cyclic shear behavior of frozen cement-treated soil–concrete interfaces is critical for analyzing soil–structure interfaces and foundation design in cold regions and artificially frozen ground. The cyclic shear behavior of the interface between frozen cement-treated sand and structure is investigated in this paper at various normal stresses and temperatures. Experimental results include the variation of the peak shear stress, peak normal displacement, shear stiffness with the number of cycles, and the relationship between peak shear stress and smoothness under certain conditions. Peak shear stresses of warm frozen cement-treated sand and cold frozen cement-treated sand varied with cycle number. Additionally, the former is significantly larger than the latter in the stable phase. The peak normal displacement showed the same results, indicating that the ice crystals formed on the surface and the strength of the frozen cement-treated sand have significant differences at various temperatures. The study’s findings aid in understanding the complexities of the cyclic shear behavior of frozen cement-treated sand and structure interfaces and provide references on frozen cement-treated sand zones in practical engineering.

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“…Noroozi, A. G et al [23] conducted a series of tests to study the shear characteristic of the soil-concrete interface. Huang et al [24] investigated the effect of temperature on the shear properties of the soil-ice interface through low-temperature shear tests.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Shear Characteristics of Frozen Silty Clay and Grey Relational Analysis

Huang

Mao

et al. 2022

Sustainability

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In the spring thawing season, the decrease in the strength of frozen soil caused by temperature may lead to slope instability. Therefore, researchers have studied the relationship between the temperature and strength of the freeze-thaw zone. However, previous studies have considered the impact of thawing temperature on the strength, but less research on shaping temperature. Therefore, direct shear tests were performed on specimens with different thawing temperatures (i.e., −5, −2.and 1 °C) and different water contents (i.e., 9, 16, and 23%) at different shaping temperatures (i.e., −2, −7 and −12 °C). The results indicated that: the stress-strain curves under different test conditions exhibited strain softening characteristics; shear strength and shear index decreased with increasing shaping temperature; the effect of cohesion on strength was greater than that of internal friction angle; the mechanical mechanism in the freeze-thaw zone was related to the unfrozen water content of the specimen. In addition, the grey correlation analysis showed that the water content had the greatest effect on the shear index, while the shaping temperature had the least effect on the shear index. The grey relational grade of shaping temperature was greater than 0.5, indicating that the effect of shaping temperature on strength was not negligible.

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Experimental study on shear characteristics of the silty clay soil-ice interface

Cited by 5 publications

References 17 publications

Parametric Design and Field Behavior of Earthen Structures

Parametric Design and Field Behavior of Earthen Structures

Cyclic Shear Behavior of Frozen Cement-Treated Sand–Concrete Interface

Experimental Investigation on the Shear Characteristics of Frozen Silty Clay and Grey Relational Analysis

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