Thermally induced volume change and excess pore water pressure of soft Bangkok clay

Abuel-Naga, Hossam; Bergado, Dennes T.; Bouazza, Abdelmalek

doi:10.1016/j.enggeo.2006.10.002

Cited by 162 publications

(85 citation statements)

References 30 publications

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“…In order to keep the stress ratio (h) constant, any increase in cell pressure (ds? 3) was accompanied by a corresponding increase in the deviatoric stress (dq) using the following formula:…”

Section: Anisotropic Consolidation Test Programmentioning

confidence: 99%

Effect of Temperature on Shear Strength and Yielding Behavior of Soft Bangkok Clay

Abuel-Naga

Bergado

Lim

2007

Soils and Foundations

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Section: Anisotropic Consolidation Test Programmentioning

confidence: 99%

Effect of Temperature on Shear Strength and Yielding Behavior of Soft Bangkok Clay

Abuel-Naga

Bergado

Lim

2007

Soils and Foundations

Self Cite

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“…In fact, in drained conditions, in some cases heating causes strengthening in clays (thermal hardening) and a stiffer behaviour can observed during subsequent shearing. This hardening effect (associated with increasing shear strength) in drained conditions was confirmed by Reference [216], who subjected soil samples to heating before shearing them in undrained conditions. [26] using data from References [203,[216][217][218][219][220][221]).…”

Section: Thm Response By Triaxial Testsmentioning

confidence: 73%

“…Figure 25. Evolution of volumetric strain with the over-consolidation ratio (OCR) for clays (∆T = 20-40 • C) (adapted from Reference [26] using data from References [203,[216][217][218][219][220][221]). .…”

Section: Thm Response By Triaxial Testsmentioning

confidence: 99%

Characterisation of Ground Thermal and Thermo-Mechanical Behaviour for Shallow Geothermal Energy Applications

et al. 2017

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Increasing use of the ground as a thermal reservoir is expected in the near future. Shallow geothermal energy (SGE) systems have proved to be sustainable alternative solutions for buildings and infrastructure conditioning in many areas across the globe in the past decades. Recently novel solutions, including energy geostructures, where SGE systems are coupled with foundation heat exchangers, have also been developed. The performance of these systems is dependent on a series of factors, among which the thermal properties of the soil play a major role. The purpose of this paper is to present, in an integrated manner, the main methods and procedures to assess ground thermal properties for SGE systems and to carry out a critical review of the methods. In particular, laboratory testing through either steady-state or transient methods are discussed and a new synthesis comparing results for different techniques is presented. In situ testing including all variations of the thermal response test is presented in detail, including a first comparison between new and traditional approaches. The issue of different scales between laboratory and in situ measurements is then analysed in detail. Finally, the thermo-hydro-mechanical behaviour of soil is introduced and discussed. These coupled processes are important for confirming the structural integrity of energy geostructures, but routine methods for parameter determination are still lacking.

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“…Specifically, the coefficient of thermal expansion of pore water is approximately 7 to 10 times that of most soil particles (McKinstry 1965;Mitchell and Soga 2005). In drained heating tests on normally consolidated and lightly overconsolidated soils, the differential expansions of water and soil particles leads to excess pore water pressure generation, which dissipates resulting in a time-dependent, irrecoverable contraction (Sultan et al 2002;Abuel-Naga et al 2007). Subsequent cooling leads to further contraction (Baldi et al 1988).…”

Section: Background On Thermal Volume Change Of Soilsmentioning

confidence: 97%

Impact of the Rate of Heating on the Thermal Consolidation of Saturated Silt

Vega¹,

Coccia²,

Tawati³

et al. 2012

GeoCongress 2012

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This paper describes an experimental investigation into the impact of the rate of heating on thermally-induced volume change of saturated, normally consolidated silt using a temperature-regulated oedometer with single-sided drainage. The results indicate that the rate of heating does not lead to a significant impact on the thermal volume change at the end of heating, but it does affect the magnitude of excess pore water pressure generation and the maximum transient contraction. Specimens heated rapidly were observed to initially contract by a greater amount than those heated slowly due to dissipation of excess pore water pressure, but were then observed to expand at the same rate as the heating rate as the dissipation process slowed.

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Thermally induced volume change and excess pore water pressure of soft Bangkok clay

Cited by 162 publications

References 30 publications

Effect of Temperature on Shear Strength and Yielding Behavior of Soft Bangkok Clay

Effect of Temperature on Shear Strength and Yielding Behavior of Soft Bangkok Clay

Characterisation of Ground Thermal and Thermo-Mechanical Behaviour for Shallow Geothermal Energy Applications

Impact of the Rate of Heating on the Thermal Consolidation of Saturated Silt

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