Mechanical behavior modeling of thaw-weakened soil

Shoop, Sally A.; Affleck, Rosa T.; Haehnel, Robert B.; Janoo, Vincent C.

doi:10.1016/j.coldregions.2007.04.023

Cited by 37 publications

(15 citation statements)

References 3 publications

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“…Based on a model test, Cai et al (2012) studied the dynamic modulus and damping ratio of silty soil subgrade loaded by an airplane. In terms of determining the anti-freeze-thaw properties of silty soils, the works by scholars at home and abroad have primarily focused on the physical properties (Othman andBenson, 1993 andQi et al, 2008), unconfined compressive strength (Ahmed and Ugai, 2011;Kamei et al, 2012;Ma et al, 1999), and stress-strain properties (Shoop et al, 2008) under repeated freeze-thaw cycles; there have only been a few works on the dynamic responses of silty soil under repeated freeze-thaw cycles.…”

Section: Introductionmentioning

confidence: 99%

“…So far, studies on the mechanism of frost heaving and thaw subsidence and preventing freeze damage have achieved some success in defining the process. In terms of the thaw subsidence properties, Morgenstern and Nixon (1971) and Shoop et al (2008) created a subsidence calculation model. Klinova et al (2010) studied influential factors, such as water content, temperature and compactness, which affect thaw subsidence properties through laboratory tests.…”

Section: Introductionmentioning

confidence: 99%

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An experimental study on the mechanical properties of silty soils under repeated freeze–thaw cycles

Wang

Liu

Han

et al. 2015

Cold Regions Science and Technology

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An experimental study on the mechanical properties of silty soils under repeated freeze–thaw cycles

Wang

Liu

Han

et al. 2015

Cold Regions Science and Technology

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“…Referring to the viewpoint of Wong and Haug [8] that the development rate of frost depth is greater than that of moisture migration in soil, numerous authors have studied the influence of freeze-thaw cycles on the mechanical properties of soil under the closed system [9][10][11][12]. e existing investigations have been carried out focusing on the strength properties of the soil after freezethaw cycles, such as the unconfined compressive strength [3], failure strength [11], shear strength [12,13], and modulus of elasticity [14,15].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on Mechanical Properties of Compacted Clay under Freeze-Thaw Cycles with Closed and Open Systems

Xian

Lü

Yao

et al. 2019

Advances in Materials Science and Engineering

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The frost heave and thaw settlement caused by freeze-thaw cycles will seriously affect the engineering properties of soil. This paper attempts to comparatively investigate the deterioration effect of freeze-thaw cycles on the mechanical properties of compacted clay in closed and open systems. The specimens were frozen and thawed from the top to bottom in two systems. The moisture contents and deformations after freeze-thaw cycles were measured. Mechanical parameters of soil were examined through triaxial compression tests. Results show that the moisture content and deformation of soil change evidently with the increase of freeze-thaw cycles in the open system, while these parameters in the closed system change little. In the open system, the attenuation rate of failure strength, elastic modulus, and angle of internal friction of soil subjected to 7 freeze-thaw cycles are all about 2 times as large as that in the closed system and the attenuation rate of cohesion is even 4 times of that in the closed system. These differences reveal that the deterioration effect of freeze-thaw cycles on soil strength is aggravated after water supply. These findings indicate that soil structure damage and moisture content increase is the dominant factor affecting engineering properties of the soil in the open system.

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“…Frequent diurnal freeze-thaw cycles mainly affect surficial soils to 5-10 cm depth and can lead to surface velocity of soil movement of 100 cm year -1 (Matsuoka, 2001). Accentuated movement occurs due to gelifluction, where a mix of liquid and frozen porewater at the onset of freezing or thawing greatly decreases the mechanical strength of soil (Christ et al, 2009;Shoop et al, 2008). Capillary forces or ice bonding change rapidly and markedly as the temperature of ice nears its melting point, with the associated decline in mechanical strength causing downslope soil movement.…”

Section: Introductionmentioning

confidence: 99%

Gelifluction and Thixotropy of Maritime Antarctic Soils: Small-Scale Measurements with a Rotational Rheometer

Sun

Dennis

Newsham

et al. 2016

Permafrost and Periglac. Process.

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Gelifluction, thixotropy and yield stress were measured from < 5 g soil samples taken from Signy, Alectoria, Greenwich, Wiencke and Livingston islands in the maritime Antarctic using a temperature‐controlled rotational rheometer. The small sample size that this method permitted is compatible with sampling from sensitive sample locations. An oscillating 10 Pa shear stress was applied to samples at ‐0.5 kPa water potential. Two freeze‐thaw cycles had temperature ramps from 5°C to ‐10°C over 2 h, followed by ‐10°C to 5°C over 2 h and finally at 5°C for 1 h. At freezing onset, the shear modulus, G, dropped to 4–50 per cent of thawed G, with no differences between locations. At thawing onset, G dropped to 8–32 per cent of thawed G, with significant differences between locations (P < 0.001). Thixotropy was then measured by applying a 2 kPa oscillating shear stress for 10 min, followed by relaxation at 10 Pa for 2 h. The increased shear stress caused G to drop to less than 8 per cent of the pre‐stressed value, with no difference between locations. After 0.1 and 2 h, G was 18–65 per cent and 31–82 per cent of the pre‐stressed value, respectively. A shear ramp determined yield stresses ranging from 494–2217 Pa. These findings demonstrate the potential risk of more frequent freeze‐thaw cycles or the occurrence of thawed soil to the stability of polar soils. Gelifluction through more frequent freeze‐thaw cycles could result in increased slope movement, whereas thixotropy caused by trampling of thawed soils could exacerbate mechanical damage of surface soils. Copyright © 2016 John Wiley & Sons, Ltd.

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Mechanical behavior modeling of thaw-weakened soil

Cited by 37 publications

References 3 publications

An experimental study on the mechanical properties of silty soils under repeated freeze–thaw cycles

An experimental study on the mechanical properties of silty soils under repeated freeze–thaw cycles

Comparative Study on Mechanical Properties of Compacted Clay under Freeze-Thaw Cycles with Closed and Open Systems

Gelifluction and Thixotropy of Maritime Antarctic Soils: Small-Scale Measurements with a Rotational Rheometer

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