A state-of-the-art report. Ground freezing: Mechanical properties, processes and design

Jessberger, H L

doi:10.1016/0013-7952(81)90042-9

Cited by 33 publications

(13 citation statements)

References 8 publications

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“…However, even at temperatures below the freezing point of water, some water in the pores remains unfrozen (Tsytovich, 1975;Konrad, 1990;Andersland and Ladanyi, 1994) influencing the mechanical strength indirectly by reducing the ice content. To date, the role of temperature on the mechanical strength of frozen soils is very well known and an increase in strength upon a change in negative temperature has been reported (Tsytovich, 1975;Bragg and Andersland, 1981;Jessberger, 1981;Akagawa et al, 1982;Zhu and Carbee, 1984;Zhu et al, 1988;Li et al, 2004 and others). Although the above studies have provided a good understanding of the effect of temperature on the strength, detailed studies of the effect of moisture content on the mechanical strength of frozen soils are still required.…”

Section: Introductionmentioning

confidence: 93%

Experimental study on the physical-mechanical properties of frozen silt

Christ

Kim

2009

KSCE J Civ Eng

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The objective of this study was to investigate the physical-mechanical characteristics of frozen Siberian silt. Unfrozen water content, uniaxial compressive strength and direct-tensile strength of frozen silt samples at different moisture contents were determined in the laboratory. Experimental results revealed that the amount of unfrozen water in the silt decreased with descending temperature and stabilized at temperatures below -10 o C. Even at very low temperatures a considerable amount of unfrozen water remained. Mechanical strength test results showed a strong dependence of the stress-strain behavior of the frozen silt on the moisture content and temperature. The strength for compression and tension increased with decreasing temperature and increasing moisture content. At any given temperature and moisture content compressive strength was significantly greater than tensile strength. Based on the compressive and tensile stress-strain relationship at a given temperature and moisture content, approximate values of strength ratio, failure strain ratio and deformation modulus ratio were established.

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Section: Introductionmentioning

confidence: 93%

Experimental study on the physical-mechanical properties of frozen silt

Christ

Kim

2009

KSCE J Civ Eng

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“…Physical and mechanical properties of frozen soils have been investigated by destructive testing (e.g. Jessberger, 1981;Akagawa et al, 1982;Zhu and Carbee, 1984;Li et al, 2004) and indirect measurement (e.g. Nakano et al, 1972;Nakano and Arnold, 1973;Thimus et al, 1991;Wang et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

The influence of temperature and cycles on acoustic and mechanical properties of frozen soils

2009

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The influence of temperature and Freeze-Thaw (FT) processes on the mechanical properties of frozen soils were investigated in the laboratory in order to give a better understanding of changes in engineering properties of frozen soils. The experimental data revealed a dependence of compressional and shear wave velocity of frozen soils on temperature, soil type and FT cycles. Compressional wave velocity showed a strong correlation to the unfrozen water content dependent on soil type, while shear wave velocity was mainly influenced by the ice content and the soil matrix. Compressional and shear wave velocity changed for samples subject to FT cycling, which appears to be caused by alterations in the soil structure. Elastic constants were calculated based on the wave propagation theory and compared to results from uniaxial compression tests. The dynamic elastic modulus, dynamic shear modulus and compressive strength increased with descending temperature. FT cycles reduced the compressive strength, and influenced the dynamic elastic constants. Poisson's ratios of all tested soils not subject to FT cycling decreased upon a change in negative temperature; while the opposite trend was observed for soils influenced by FT cycles.

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“…In this paper, the only parameter which can be fixed from the experimental results is the critical confining pressure. According to the previous studies [9], the friction angle of a frozen sand is similar to the corresponding unfrozen samples. Then a range of 25-40°is given.…”

Section: New Strength Criterion Considering the Comprehensive Influenmentioning

confidence: 82%

“…As for the strength criterion, it has been found that the strength of frozen soils consists of two components, friction and cohesion, similar to the strength of unfrozen finegrained soils [9]. Jessberger [9] summarized that the MohrCoulomb criterion is suitable for frozen soils under low confining pressure.…”

Section: Introductionmentioning

confidence: 98%

“…Jessberger [9] summarized that the MohrCoulomb criterion is suitable for frozen soils under low confining pressure. Experiments show that neither the strain rate nor temperature has much influence on the friction angle but both have great influence on the cohesion [9,10]. The fact that the strength increases with the decrease in temperature leads Chen [4] to suggest that the instantaneous strength could be described by…”

Section: Introductionmentioning

confidence: 99%

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A new criterion for strength of frozen sand under quick triaxial compression considering effect of confining pressure

2007

Acta Geotech.

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The strength of frozen soils has been one of the most extensively studied aspects in frozen soil mechanics. When carrying out deep excavations using freezing methods, high stress states are often encountered. Therefore, the strength of frozen soils under high confining pressures is of major concern. This paper first reviews the present failure criteria for frozen soils, especially with regard to the effect of confining pressure on the strength. It is suggested that the strength consists of two components, cohesion and friction, and can be expressed by the Mohr-Coulomb criterion and in the framework of the Drucker-Prager criterion. However, these two components are both dependent on the stress state. Duncan's equation for the friction angle is extended to frozen soils. A frozen Lanzhou fine sand is taken as study subject. The frozen sand is compressed at a high strain rate under three different temperatures and under a wide range of confining pressure. Experimental results have confirmed the generally recognized principle that the strength increases with the confining pressure up to certain value. Thereafter, it decreases with continued increase in confining pressure. Experimental data from our own tests and literature are fitted to the new criterion, which shows its validity.

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A state-of-the-art report. Ground freezing: Mechanical properties, processes and design

Cited by 33 publications

References 8 publications

Experimental study on the physical-mechanical properties of frozen silt

Experimental study on the physical-mechanical properties of frozen silt

The influence of temperature and cycles on acoustic and mechanical properties of frozen soils

A new criterion for strength of frozen sand under quick triaxial compression considering effect of confining pressure

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