Download Chemo-Mechanical Couplings in Porous Media Geomechanics and by Benjamin Loret, Jacques M. Huyghe PDF

By Benjamin Loret, Jacques M. Huyghe

The e-book addresses primary matters confronted through experimentalists, modelers and engineers attracted to diverse actual, mechanical and shipping facets of organic tissues and chemically lively geological fabrics, often clays and shales. the focal point is at the couplings among electro-chemical and mechanical features occupied with swelling and chemical consolidation. Emphasis is laid at the impact of those phenomena on mechanical houses and on delivery homes. functions in geo-environmental and geotechnical applied sciences, together with nuclear and dangerous waste isolation, oil restoration, engineering geology, are addressed at once or implied. regulate of long-term results of surgical procedure and mechanical functionality of prostheses could benefit from the modeling of irreversibilities which are of extreme value in geological fabrics. Conversely, realizing the self-regulation mechanisms of organic tissues might be beneficial within the layout of effective engineering materials.

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Q. ; ~ "' 200 o-o .. ,... 1 t 100 (days) Figure 28. I:Hsaccia taken at a depth of 21 m below ground Ievel. DiMaio 40 It is possible to relate void ratio to swelling pressure, for given values of the other parameters. The solution is highly dependent on As. 56As where As is expressed in m2/g. It is worth noting that the values arenot very different from those evaluated by an approximate method based on methylene blue adsorption (Di Maio et al. 2003). Figure 29 compares experimental data to theoretical curves.

1-136. Stern, 0. (1924). Zur Theorie der electrolytischen Doppelschiet Z. Elecktrochemie, Vol. 30, pp. 508-516. Yin, J. H. (1999). Properties and behaviour of Hong Kong marine deposits with different clay contents. Canadian Geotechnical Journal, vol. 36, pp. 1085-1095. Shear Strength of Clays and Clayey Soils: the lnfluence of Pore Fluid Composition Caterina Di Maio Dipartimento di Strutture, Geotecnica, Geologia applicata all'Ingegneria, Universita della Basilicata, Italy Abstract. This paper reports experimental results relative to the influence of pore fluid composition on the peak shear strength of the Bisaccia clay and on the residual shear strength of several different clayey soils: the Ponza bentonite, commercial bentonite and kaolin, Bisaccia, Gela and Marino clays.

C- 100 . · ... 0 0 100 200 300 p' (kPa) 400 500 600 Figure 3. Results of CU and CD triaxial tests carried out on norrnally consolidated Bisaccia clay exposed to distilled water (Di Maio and Onorati, 2000b). , 6 200 100 0 0 200 400 p' (kPa) 600 800 1000 Figure 4. Results of CU and CD tests on the Bisaccia clay reconstituted with and exposed to I M NaCI solution (Di Maio and Onorati, 2000b ). 2 Residual shear strength The materials were reconstituted with distilled water and initially sheared while immersed in distilled water.

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