In environmental geotechnics, transportation calculations for un- saturated soils have to account for pore-water suction, air content, presence of colloids, diffusion mechanism and the amount of adsorbed water upon the inner porous surfaces. We develop a new physically based three-component model which uses the balance principles for an immiscible mixture of con- tinua with microstructure; includes phenomena of diffusion, adsorption and chemical reactions; proposes suitable constitutive equations to study the flow of a fluid/contaminant mixture through the soil modeled as an elastic porous solid. We also investigate on the conditions of hyperbolicity of the subsystem describing the liquid mixture.

Adsorption and diffusion of pollutants in unsaturated soils

GIOVINE, PASQUALE
2018

Abstract

In environmental geotechnics, transportation calculations for un- saturated soils have to account for pore-water suction, air content, presence of colloids, diffusion mechanism and the amount of adsorbed water upon the inner porous surfaces. We develop a new physically based three-component model which uses the balance principles for an immiscible mixture of con- tinua with microstructure; includes phenomena of diffusion, adsorption and chemical reactions; proposes suitable constitutive equations to study the flow of a fluid/contaminant mixture through the soil modeled as an elastic porous solid. We also investigate on the conditions of hyperbolicity of the subsystem describing the liquid mixture.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12318/11567
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