Thermo‐Mechanical Behavior of Seafloor Sediments

Houston, Sandra L.; Houston, William N.; Williams, Neil D.

doi:10.1061/(asce)0733-9410(1985)111:11(1249)

Cited by 91 publications

(69 citation statements)

References 3 publications

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“…This drainage results in a timedependent, volumetric contraction of the soil as the pore water pressure continues to dissipate [4,8]. Campanella and Mitchell [8] relates this phenomenon to the primary consolidation behavior observed in stress-induced consolidation and is generally referred to as thermal primary consolidation [7,23]. It is important to note that the significance of this mechanism is highly dependent on the rate of heating and soil hydraulic conductivity.…”

Section: Possible Mechanisms Of Thermal Volume Changementioning

confidence: 99%

Thermal volume change of poorly draining soils I: Critical assessment of volume change mechanisms

Coccia

McCartney

2016

Computers and Geotechnics

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a b s t r a c tThe thermal volume change of soils is typically interpreted using the stress history and changes in yield stress with temperature (thermal softening). However, the path followed to reach a given stress state may lead to different thermal volume changes. Alternative mechanisms of thermal volume change are explored using data from the literature and isotropic, drained heating tests on compacted silt. No relationship between thermal volume change and degree of saturation was observed. However, a clear relationship with the secondary compression prior to heating was observed, indicating that thermally accelerated creep may provide better thermal volume change predictions than thermal softening.

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Section: Possible Mechanisms Of Thermal Volume Changementioning

confidence: 99%

Thermal volume change of poorly draining soils I: Critical assessment of volume change mechanisms

Coccia

McCartney

2016

Computers and Geotechnics

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“…The effect of temperature on the volume change behaviour of saturated soils has been investigated by a number of researchers such as Plum and Esrig (1969), Houston et al (1985), Hueckel and Baldi (1990), Boudali et al (1994), Delage et al (2000), Graham et al (2001), Villar and Lloret (2004), Romero et al(2005) and Tang et al (2008).…”

Section: Introductionmentioning

confidence: 99%

Effect of thermal history on the properties of bentonite

Estabragh

Khosravi²

2016

Environ Earth Sci

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The effect of thermal history on the properties of bentonite was studied through a number of experimental tests. The desired thermal history was created on samples of bentonite by keeping them at a fixed temperature (50, 100, 150, 200 and 250 o C) for a specific duration (3, 7, 14 and 30 days). Standard compaction, Atterberg limits, free swelling and swelling pressure tests were carried out on the samples on the dry side of optimum, optimum and wet side of optimum of the compaction curve with desired thermal history. In addition chemical tests were carried out on the flooding water at the end of the swelling test. The results showed that the changes in compaction characteristics were not considerable but the Atterberg limits, free swelling and swelling pressure of the soil were changed due to the thermal history in comparison with the soil without any thermal history. The magnitudes of free swelling and swelling pressure were dependent on the location of prepared sample on the compaction curve. In addition, the changes in Atteberg limits and swelling parameters (amount of free swelling and swelling pressure) were functions of magnitude of temperature and duration of time that the sample experienced the temperature in its temperature history. The effects of temperature and also duration of exposure of the soil to temperature was discussed with the aid of the Diffuse Double Layer (DDL) theory. It was found that the temperature may change the gradation of soil due to cementation of particles as a result of formation of some salts and oxides that help to paste the particles together and change the properties of the soil.

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“…Houston et al (1985), Tanaka et al (1997) and Abuel-Naga et al (2007b) investigated experimentally the effect of stress level and history on the thermally induced pore water pressure. Their results show that (i) the rate of the thermally induced pore water pressure increase with temperature is nonlinear, (ii) a higher consolidation pressure produces a larger pore water pressure increase for a given temperature increase, (iii) the rate of increase in the thermally induced pore water pressure is stress history dependent (OCR) and tends to decrease as the OCR increases and (iv) the thermally induced pore water pressure of the normally consolidated specimens was reversible whereas the overconsolidated specimens showed an irreversible behaviour.…”

Section: Thermally Induced Pore Water Pressurementioning

confidence: 99%

Energy piles: current state of knowledge and design challenges

Abuel-Naga

Raouf²,

Raouf³

et al. 2015

Environmental Geotechnics

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Energy piles offer a promising and eco-friendly technique to heat or cool buildings. Energy piles can be exploited as ground heat exchangers of a ground source heat pump system. In such application, the energy pile and its surrounding soil are subjected to temperature changes that could significantly affect the pile-soil interaction behaviour. The aim of this paper is to review the current state of knowledge on the design of energy piles in terms of the geostructural and heat exchanger functions. Furthermore, a conceptual understanding of the potential temperature effects on the mechanical behaviour of piles is proposed in this paper. Based on this conceptual understanding as well as the reported thermo-hydro-mechanical behaviour of saturated clays in the literature, the challenging geotechnical aspects facing the energy pile design are highlighted, and further research efforts to refine them are recommended. Ayman M.I. Raouf BE (Hons)

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Thermo‐Mechanical Behavior of Seafloor Sediments

Cited by 91 publications

References 3 publications

Thermal volume change of poorly draining soils I: Critical assessment of volume change mechanisms

Thermal volume change of poorly draining soils I: Critical assessment of volume change mechanisms

Effect of thermal history on the properties of bentonite

Energy piles: current state of knowledge and design challenges

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