By Lyesse Laloui
This ebook presents a legitimate foundation within the difficult zone of the mechanics of unsaturated geomaterials. the target is to provide the reader with an exhaustive assessment ranging from the fundamentals and protecting the newest theories and purposes (i.e. normal failures, nuclear waste disposal, oil and agriculture productions). The presentation of the elemental thoughts is predicated on an interdisciplinary method, within the components of soil, rock and cement-based fabric mechanics.Content:
Chapter 1 easy suggestions within the Mechanics and Hydraulics of Unsaturated Geomaterials (pages 1–28): Alessandro Tarantino
Chapter 2 Mechanics of Unsaturated Soils (pages 29–54): Lyesse Laloui, Mathieu Nuth and Bertrand Francois
Chapter three Desiccation Cracking of Soils (pages 55–86): Herve Peron, Lyesse Laloui, Liang?Bo Hu and Tomasz Hueckel
Chapter four Experimental strategies for Unsaturated Geomaterials (pages 89–112): Pierre Delage
Chapter five New Experimental instruments for the Characterization of hugely Overconsolidated Clayey Materials1in Unsaturated stipulations (pages 113–128): Simon Salager, Alessio Ferrari and Lyesse Laloui
Chapter 6 box size of Suction, Water content material and Water Permeability (pages 129–154): Alessandro Tarantino
Chapter 7 Hydromechanical Coupling idea in Unsaturated Geomaterials and Its Numerical Integration (pages 155–184): Robert Charlier, Jean?Pol Radu, Pierre Gerard and Frederic Collin
Chapter eight Conservation legislation for Coupled Hydro?Mechanical strategies in Unsaturated Porous Media (pages 185–208): Ronaldo I. Borja and Joshua A. White
Chapter nine pressure Localization Modeling in Coupled temporary Phenomena (pages 209–232): Frederic Collin, Yannick Sieffert and Rene Chambon
Chapter 10 Modeling Landslides in partly Saturated Slopes Subjected to Rainfall Infiltration (pages 233–250): John Eichenberger, Mathieu Nuth and Lyesse Laloui
Chapter eleven Thermally precipitated Moisture delivery and Pore strain iteration in approximately Saturated Geomaterials (pages 251–278): Antony P.S. Selvadurai
Chapter 12 Mechanics of Unsaturated Geomaterials utilized to Nuclear Waste garage (pages 279–302): Antonio Gens
Chapter thirteen Soil–Pipeline interplay in Unsaturated Soils (pages 303–325): Dilan Robert and Kenichi Soga
Chapter 14 Coefficient B, Consolidation, and Swelling in positive Soils close to Saturation in Engineering perform (pages 327–351): Luc Boutonnier
Chapter 15 Geomechanical research of River Embankments (pages 353–374): Cristina Jommi and Gabriele Della Vecchia
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Extra info for Mechanics of Unsaturated Geomaterials
2, John Wiley & Sons, p. 85-152, 1969. E. and DELAGE P. ), Proc. 1st Int. Conf. Unsaturated Soils, Paris, Balkema, Rotterdam, vol. 2, p. 623-630, 1995. , “Tensiometeric and axis translation techniques for suction measurement”, Geotechnical and Geological Engineering, vol. 26, no. 6, p. 615-631, 2008. , Fundamentals of Soil Behavior, Wiley Inter-Science, New York, 1993. , “Effective stress in soils, concrete and rocks”, Proc. Conf. Pore Pressure, Butterworths, London, p. 4-16, 1960. , “Panel lecture: direct measurement of soil water tension”, Proc.
18(a). 18(b). 51, the experimental SWRC is used to calibrate the model. 44), then the water retention curves will be shifted to the right. This prediction is in good agreement with the experimental results due to the fact that denser soils are more difficult to dry out. 1 60 se=11 kPa 50 pH = 1e3 kPa 40 30 20 Exp. 8 Exp. 18. Simulations of the retention of a glacial till (experimental data from [VAN 99]): (a) parameter calibration for the air entry value and (b) SWRCs for different initial volumes (from [NUT 08a]) The ability of the model to predict the thermomechanical response of the unsaturated soils has been validated with the experimental results corresponding to different non-isothermal experiments done on various soils [FRA 08].
In the saturated sub-regions, slippage at the “saturated” contacts is controlled by the tangential and normal components of the contact forces. As in saturated soil, these contact forces are influenced by externally applied total stresses and by the pore-water pressure in the surrounding voids. In contrast, menisci at the inter-particle contacts provide a stabilizing effect through an additional component of normal force at the contact with no addition to the tangential force [GAL 03, WHE 03]. Meniscus and bulk water, therefore, control the mechanical response of unsaturated geomaterials by different mechanisms.
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