By Mario Manassero, Andrea Dominijanni, Sebastiano Foti, Guido Musso
Environmental Geotechnics bargains with a wide selection of functions, similar to the characterization of polluted websites and landfill waste, the layout of containment structures for subsoil pollutant keep watch over, radioactive waste disposal, geo-energy exploitation and bacteria-driven soil amendment, between others. trustworthy and powerful predictions of the particular behaviour and function of those very advanced platforms require a deep realizing of the coupled hydro-bio-chemo-mechanical phenomena that ensue at very various scales. destiny growth within the medical state-of-the-art and giant developments within the normal practices will for that reason be heavily concerning the improvement of shared wisdom between varied disciplines. The extension and refinement of theoretical modelling and the experimentation functions inspired via geo-environmental purposes extra typically give you the framework for huge developments within the soil and rock mechanics fields.
Coupled Phenomena in Environmental Geotechnics collects the particular lectures and papers offered on the foreign Symposium on Coupled Phenomena in Environmental Geotechnics (Torino, Italy, 1-3 July 2013), which was once geared up through the Italian Geotechnical Society in the framework of Technical Committee TC 215 of the foreign Society for Soil Mechanics and Geotechnical Engineering (ISSMGE). The ebook, with contributions not just from the geotechnical neighborhood, but in addition from similar and complementary disciplines, is of specific curiosity to engineers and teachers in geotechnical and environmental engineering.
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Additional info for Coupled Phenomena in Environmental Geotechnics
Assisted by the examination of the numerical analysis’ results, it is possible to identify the processes underlying this behaviour. The first relative humidity increase is due to a vapour front (driven by heating) passing through the observation point. Afterwards, temperature increase causes evaporation and, therefore, drying of the material. After approximately one year, general hydration takes over causing the final gradual increase of relative humidity. It can be noted that vapour movement plays an important role in the evolution of the hydraulic state of the barrier in the hot zone; indeed, a significant part of the early hydration of the middle and outer barrier zones is due to the condensation of vapour coming from the inner region.
From this equation, an expression for porosity variation is obtained as: Equation (2) expresses the variation of porosity caused by volumetric deformation and solid density variation. , θ = ωρ E: specific internal energy ρ: density q: advective flux b: body forces vector Sl : degree of saturation of liquid phase j: total mass flux u: solid displacement vector ω: mass fraction Sg : degree of saturation of gas phase jE : energy fluxes due to mass motion has been used. Water is present in liquid and gas phases.
He,Y. 1995. Analysis of coupled heat, moisture and air transfer in a deformable unsaturated soil. Géotechnique 45: 677–689. R. & He, Y. 1997. A coupled heat-moisture transfer theory for deformable unsaturated soil and its algorithmic implementation. Int. Journal Numer. Methods in Eng. 40: 3421–3441. , & Gens, A. 2004. Aspects of modelling geotechnical problems in hard soils and soft argillaceous rocks. 9th Int. Symp. , Ottawa, 37–43. G. M. Hassanizadeh Utrecht University, Department of Earth Sciences, The Netherlands Soil and Groundwater Systems, Deltares, Utrecht N.
Coupled Phenomena in Environmental Geotechnics by Mario Manassero, Andrea Dominijanni, Sebastiano Foti, Guido Musso