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Showing 1 to 11 of 11 for “"Swelling pressure"”.
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Meaning, measurement, and practical application of swelling pressure
Magnitude of swelling pressure and time-rate of swelling pressure development for Taylor shale material were investigated. A total of 227, 2.5 inch and 1.77 inch diameter Taylor shale specimens oriented both perpendicular as well as parallel to the bedding planes were tested in three types of …
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Chondrocyte metabolism and matrix nano-electromechanics : the response to cartilage tissue shear deformation
… and physicochemical forces. The swelling pressure of cartilage originates from proteoglycans containing negatively charged carboxyl and sulfate groups within glycosaminoglycans. Proteoglycans are embedded within the network of collagen fibrils whose molecular structure …
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Swelling behaviour of unsaturated fine grained soils
The aim of this research was to investigate the swelling behaviour of unsaturated fine grained soils by means of various laboratory tests such as a 100 mm stress path triaxial cell and a computer controlled oedometer. Centrifuge modelling was used as a link between the laboratory tests performed …
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Physical chemistry of microbially-reduced smectites
… and the effect microbial reduction has on clay swelling, flow behavior, and the crystal structure was studied to better understand the reduction process. Structural Fe reduction by combinations of Pseudomonas bacteria is a diffusion driven process in which extracellular reductants may be …
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The role of accessory minerals in inhibiting bentonite erosion in the geological disposal of higher activity radioactive waste
… the variable aperture wall facilitated a rise in swelling pressure, resulting in breach of the accessory mineral barrier. An erosive period ensues, during which the breach is healed and the barrier regains its integrity.Simplified assessments, scaling the experiments to a repository scenario by …
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Enhancing the engineering properties of expansive soil using bagasse ash, bagasse fibre and hydrated lime
… from approximately 10% to less than 0.5%, the swelling pressure reduction was from 80 kPa to 35 kPa (about 60%), the compressive strength at failure and the corresponding strain increased significantly by 48% and 40%. Meanwhile, the combination of bagasse ash and lime to stabilise soils when …
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Wellbore stability in water-sensitive shales
… shale formations at high temperature and pressure. The instability can be caused by the high compressive effective stress or tensile stress due to the stress concentration and pore pressure increase while drilling. In addition to the in-situ stress and shale strength, shale instability is …
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The Relationships Between the Volumetric Deformation Moduli of Unsaturated Soils
… stress states namely the corrected swelling pressure (i.e., Pś) and the initial stress state translated to the matric suction plane e following a constant volume stress path (i.e., (ua - uw)e/i). Relationships between soil structure moduli can be written e in terms of log (Pś) and …
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Assessment of lime-treated clays under different environmental conditions
… alternative method to seize the volume change of swelling clays. The use of lime as a binding agent is becoming a popular method due to its abundant availability and cost-effectiveness. When mixed with swelling clays, lime enhances the mechanical properties, workability and reduces sensitivity to …
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Coupled Hydro-Mechanical Modelling of Gas Migration in Saturated Bentonite
… coefficient, high adsorption capacity and proper swelling ability. Nevertheless, gas migration in saturated bentonite may undermine the sealing ability of the geomaterial. Previous experimental studies showed that the gas migration process is accompanied by complex hydromechanical (HM) behaviors, …
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Determinación de las características de fricción en el contacto suelo-geotextil a diferentes succiones, mediante equipos de laboratorio singulares
… has been devised to be suitable for the “vapour pressure control” technique. The suction is controlled by the relative humidity within the cell atmosphere, that in turn, is governed by the concentration of a water solution. This procedure allows the control of total suction, being accurate, …