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Showing 1 to 8 of 8 for “"clay shales"”.
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Effect of sample disturbance in opalinus clay shales
The sample disturbance problem for different geomaterials is reviewed in this thesis. A general discussion on the disturbance sources and complexities of the disturbance problem is followed by detailed reviews on disturbance mechanisms and effects in soil and rock. This investigation leads to the …
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Movement of landslides in stiff clays and clay shales
… data on undisturbed and remolded soft- to stiff- clays, reported in the literature, were analyzed. An empirical correlation for secant residual friction angle for a wide range of clay compositions with plasticity index in the range of 10 to 250%, was extended to 8 different effective normal …
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Mechanical behaviour of Clay-Shales (Argille Scagliose) and implications on the design of tunnels
… Apparatus, SRTA). The samples of a stiff clay came from the Caneva-Stevenà quarry, near Pordenone (Italy), where swelling induced deformations and instabilities caused failure of the 30 cm thick unreinforced concrete lining of the adits. The decision to further investigate these phenomena …
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Meaning, measurement, and field application of fully softened shear strength of stiff clays and clay shales
… 7 effective normal stresses, for a wide range of clay compositions characterized in terms of plasticity index from 10% to 250%, based on consolidated triaxial compression tests on remolded, normally consolidated specimens of 15 stiff clay and clay shale compositions. The fully softened shear …
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Investigating the Influence of Mechanical anisotropy on the Fracturing Behaviour of Brittle Clay Shales with Application to Deep Geological Repositories
Clay shales are currently being assessed as possible host rock formations for the deep geological disposal of radioactive waste. However, one main concern is that the favourable long-term isolation properties of the intact rock mass could be negatively affected by the formation of an excavation …
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Effect of Heating Rate on Thermally Induced Pore Water Pressure and Crack Evolution in Clay and Shales
… thesis investigates the hydrothermal behavior of clay shale samples, with a specific emphasis on how heating rates influence temperature distribution and the evolution of pore pressure under elevated temperatures. Clay shales, characterized by their extensive geological presence and low hydraulic …
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Movement of Reactivated Landslides
… slow"" moving reactivated landslides in stiff clays and clay shales, is typically controlled by fluctuations in piezometric levels; the relations between rate of movement and piezometric levels and factor of safety (proportional to inverse of shear stress level) are investigated. For the …