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REVIEW ARTICLES

Mechanics and thermodynamics of saturated/unsaturated porous materials and quantitative solutions*

[+] Author and Article Information
BA Schrefler

Department of Structural and Transportation Engineering, University of Padua, Via Marzolo 9, 35131 Padova, Italy; Bernhard.schrefler@unipd.it

Appl. Mech. Rev 55(4), 351-388 (Jul 30, 2002) (38 pages) doi:10.1115/1.1484107 History: Online July 30, 2002
Copyright © 2002 by ASME
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References

Figures

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Typical averaging volume δV (two phase flow) of a porous medium consisting of three constituents
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Partially saturated porous medium: top—pore space filled with air and water; bottom—detail with interfaces and common lines (redrawn from Gray and Schrefler 50)
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A sample of porous media system at saturation where film effects are important. Note that in some regions the curvature of the fluid-fluid interface is impacted by the fact that a wetting film coats the solid (redrawn from Gray and Schrefler 50)
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Assumed effects of capillary pressure
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Volumetric strain of a silt sample under isotropic compression at different levels of capillary pressure (redrawn from Cui and Delage 71)
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Yield surfaces in the p,q,pc space
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Macroscopic external surface (thick solid line) where the boundary conditions are imposed
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Temperature profiles during thermoelastic consolidation of clay: a) solved for boundary conditions of the first kind; b) solved for boundary conditions of the third kind (Redrawn from Lewis and Schrefler 45)
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Capillary pressure profiles during thermoelastic consolidation of clay: a) solved for boundary conditions of the first kind; b) solved for boundary conditions of the third kind (Redrawn from Lewis and Schrefler 45)
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Vertical displacement profiles during thermoelastic consolidation of clay: a) solved for boundary conditions of the first kind; b) solved for boundary conditions of the third kind (Redrawn from Lewis and Schrefler 45)
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Nuclear waste container made of Ultra High Performance Concrete
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Discretization of the container
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a) temperature distribution at 10 min, b) vertical stress distribution at 10 min, c) damage distribution at 10 min
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Acceleration histories of Nocera Umbra earthquake (measured)
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Measured and computed displacements on the top of the dam
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Equivalent plastic strain at 200 s
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Water pressures at 200 s, pore water tractions are positive
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Strain localization analysis: example and load function
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Contours of effective plastic strain at different times for the symmetric load case a) 3.2E-03 s, b) 4.0E-03 s, c) 4.4E-03 s
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Development of effective plastic strain in the cross section x = 0.051 m at different times
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Water pressure distribution in the cross section x= 0.051 m at different times
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Development of water pressure along the vertical direction in the central cross section of the sample for initial water pressure p0 = −200 kPa
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a) Gas production and b) pore pressure decline versus time in the Ravenna gas field, c) surface settlement above the Ravenna Terra fields, as reconstructed from contour lines of equal subsidence (see Gambolati et al. 162) and successive surveys carried out by the Municipality of Ravenna
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Water saturation time history used in the analysis
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Comparison of real and calculated subsidence histories
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Loading paths and corresponding evolution of the yield surface in the p,pc plane

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