Influence of Temperature Variations on Soil Behavior

Campanella, Richard; Mitchell, James K.

doi:10.1061/jsfeaq.0001136

Cited by 439 publications

(175 citation statements)

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“…Most of the studies showed a considerable dependence of the mechanical performance of the investigated soils at medium temperature. Several publications on the thermal behavior of fine-grained soils have shown a reduction in soil volume (compaction) with an increase in temperature under drained conditions [16][17][18]. Other studies [19][20][21] have shown that normally consolidated clays show thermal contractive behavior, while overconsolidated clays can show thermal dilatant behavior [7].…”

Section: Introductionmentioning

confidence: 99%

A Laboratory Study on the Shear Strength Behavior of Two Till Deposits from Northern Germany

Hailemariam

Wuttke

2021

Energies

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This paper presents the findings of a laboratory study of the shear strength and yielding behavior of two glacial till soil deposits from the area of Heiligenhafen, northern Germany. The tests were conducted on reconstituted forms of the soils using a triaxial cell capable of controlling the temperature of the specimens. The experimental program included a series of multi-stage consolidated drained (CD) compression triaxial tests at temperature ranges between 20 and 60 °C. For the temperature range considered in this study, a mild reduction in the effective friction angle of the two till soils of less than 1° was observed due to an increase in temperature from 20 to 60 °C. All the results were carefully assessed in view of the intrinsic soil behavior and fabric, and existing trends are highlighted. The findings of this study provide valuable insights into the shearing properties of till deposits, and can contribute to the enhancement of existing soil constitutive models as well as the development of new models that are particularly suited to the behavior of glacial tills under elevated temperatures.

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Section: Introductionmentioning

confidence: 99%

A Laboratory Study on the Shear Strength Behavior of Two Till Deposits from Northern Germany

Hailemariam

Wuttke

2021

Energies

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“…The initial heating process is expected to lead to an expansion of the thermal yield surface, which implies that subsequent cooling and heating cycles below the previously applied temperature should lead only to elastic, expansive thermal volume changes. However, cyclic effects have been observed by Campanella and Mitchell (1968), Burghignoli et al (1992), andVega and, where small continued thermally induced changes in volume were observed after the first heating-cooling cycle, as observed in Figure 6. These small changes may have a long-term impact on thermally active geotechnical systems.…”

Section: Effect Of Temperature Cycles On Thermo-mechanical Behavior Of Soilsmentioning

confidence: 66%

“…In the thermo-mechanical soil behavior the preconsolidation pressure is mostly used, which has more volumetric meaning. The oedometer test results of Campanella and Mitchell (1968) show that the compressibility curves at different temperatures have the same slope, with lower void ratios occurring at higher temperatures. Compression curve at a given temperature shifts to the left and down as the temperature increases.…”

Section: Definition Of Stress State and Effect Of Temperature Changes On Preconsolidation Pressurementioning

confidence: 92%

“…In the same study, the deformation of the pedestal is ignored due to the fact that the samples were heated before being sheared, thus any deformation would have taken place before testing. Delage et al (2000) used relationships from Campanella and Mitchell (1968) and Baldi et al (1988) to account for the volume of water that was expelled during drained tests. Another issue related to thermal calibration is the control of boundary conditions.…”

Section: Thermo-mechanical Laboratory Testing Of Soilsmentioning

confidence: 99%

“…The studies which report a decrease in clay strength upon an increase in temperature are separated in two groups: the tests that use drained heating and the tests that use undrained heating. Campanella and Mitchell (1968) performed drained heating and undrained shearing on Illite clay. The decrease in strength is explained by the increase in thermal energy, which in turn increases the probability of bond slippage.…”

Section: Effect Of Temperature Changes On Shear Strength Of Soilsmentioning

confidence: 99%

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Issues involved with thermoactive geotechnical systems: characterization of thermomechanical soil behavior and soil-structure interface behavior

Laloui¹,

Olgun²,

Sütman³

et al. 2014

DFI Journal - The Journal of the Deep Foundations Institute

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This paper focuses on the main issues discussed during a session on the impact of thermo-hydromechanical behavior of soils on thermo-active geotechnical systems, and how they could affect the performance of thermo-active geotechnical systems. Both soil behavior as well as soilstructure interaction behavior were discussed. The main observation from the session was that the thermo-hydro-mechanical behavior of saturated soils has reached a mature understanding, with several established constitutive models that can be used by engineers. However, there are still opportunities to enhance these constitutive models by considering issues such as unsaturated conditions, anisotropic stress states, cyclic heating and cooling effects, and changes in the preconsolidation stress during heating and cooling. Further there are still opportunities to improve our understanding of soil-concrete interface behavior, including the development of novel testing approaches.

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A Formulation of Fully Coupled Thermal-Hydraulic-Mechanical Behaviour of Saturated Porous Media—numerical Approach

Gatmiri

Delage

1997

Int. J. Numer. Anal. Meth. Geomech.

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SUMMARYThe theoretical aspects of fully coupled thermohydromechanical behaviour of saturated porous media are presented. The non-linear behaviour of soil skeleton is assumed. A new concept called 'thermal void ratio state surface' is introduced to include thermal effects, and the stress state level influence on volume changes. The fluid phase flows according to Darcy's law and energy transport is assumed to follow Fourier's law classically. Variation of water permeability, water and solid unit weight due to thermal effects and pore pressure changes are included. A finite element package is developed based on final matrix form obtained from discretization of integral form of field equations by finite element method and integration in time. A very good agreement between the theoretical predictions and the experimental results was obtained for the several simple problems proposed by other authors.

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Influence of Temperature Variations on Soil Behavior

Cited by 439 publications

References 0 publications

A Laboratory Study on the Shear Strength Behavior of Two Till Deposits from Northern Germany

A Laboratory Study on the Shear Strength Behavior of Two Till Deposits from Northern Germany

Issues involved with thermoactive geotechnical systems: characterization of thermomechanical soil behavior and soil-structure interface behavior

A Formulation of Fully Coupled Thermal-Hydraulic-Mechanical Behaviour of Saturated Porous Media—numerical Approach

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