Mechanics and Physics of Porous Solids by Olivier Coussy

By Olivier Coussy

Mechanics and Physics of Porous Solids addresses the mechanics and physics of deformable porous fabrics whose porous house is crammed by way of one or numerous fluid combos interacting with the cast matrix. Coussy makes use of the language of thermodynamics to border the dialogue of this subject and bridge the space among physicists and engineers, and organises the cloth in this type of means that specific levels are explored, via coupled difficulties of accelerating complexity. This constitution permits the reader to construct a fantastic figuring out of the actual tactics happening within the fluids after which porous solids.Mechanics and Physics of Porous Solids deals a serious reference at the physics of multiphase porous fabrics - key analyzing for engineers and researchers in structural and fabric engineering, concrete, wooden and fabrics technological know-how, rock and soil mechanics, mining and oil prospecting, biomechanics.

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Mechanics and Physics of Porous Solids

Mechanics and Physics of Porous Solids addresses the mechanics and physics of deformable porous fabrics whose porous area is crammed via one or numerous fluid combos interacting with the cast matrix. Coussy makes use of the language of thermodynamics to border the dialogue of this subject and bridge the space among physicists and engineers, and organises the fabric in this type of approach that particular stages are explored, by way of coupled difficulties of accelerating complexity.

Extra resources for Mechanics and Physics of Porous Solids

Example text

Therefore the excess of internal pressure originating the swelling cannot be attributed to the osmotic pressure analyzed in the previous section. In fact, the excess of internal pressure making the sample swell must be associated with the electric charges borne by the platelets forming the solid part of the clay. Because these electric charges have the same sign, the observed swelling might be wrongly attributed to the electrostatic repulsion occurring between the platelets, according to the following scenario.

108) Owing to the additive character of energy the normalized Gibbs free energy of mixing, G, associated with the composite solution made of the two distinct subsolutions 1 and 2 is given by G(x1 , x2 ) = α1 G (x1 ) + α2 G (x2 ) . 109), G(x1 , x2 ) is a function of only x1 and x2 . 108) provides α2 = 1 − α1 as a function of x, x1 and x2 . In preparation for the stability analysis, let us briefly recall that the function G (x) is convex – concave – for x lying between x1 and x2 , if in this range the curvature of the representative curve is turned towards the positive – negative – values of G (x).

Therefore the excess of internal pressure originating the swelling cannot be attributed to the osmotic pressure analyzed in the previous section. In fact, the excess of internal pressure making the sample swell must be associated with the electric charges borne by the platelets forming the solid part of the clay. Because these electric charges have the same sign, the observed swelling might be wrongly attributed to the electrostatic repulsion occurring between the platelets, according to the following scenario.

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