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Coupled thermo-hydro-mechanical and chemical analysis of expansive clay subjected to heating and hydration

GUIMARAES, L. Do N ; GENS, A ; OLIVELLA, S

Transport in porous media, 2007-02, Vol.66 (3), p.341-372 [Periódico revisado por pares]

Dordrecht: Springer

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Título:
Coupled thermo-hydro-mechanical and chemical analysis of expansive clay subjected to heating and hydration
Autor: GUIMARAES, L. Do N ; GENS, A ; OLIVELLA, S
Assuntos: Cation exchanging ; Chemical analysis ; Chemical reduction ; Clay ; Clay minerals ; Complex formation ; Containment ; Earth sciences ; Earth, ocean, space ; Engineering and environment geology. Geothermics ; Exact sciences and technology ; Expansive clays ; Gibbs free energy ; Heat exchange ; Heating ; Hydration ; Hydrocarbons ; Hydrogeology ; Hydrology. Hydrogeology ; Numerical analysis ; Organic chemistry ; Oxidation ; Pollution, environment geology ; Radioactive wastes ; Redox reactions ; Sedimentary rocks ; Transport
É parte de: Transport in porous media, 2007-02, Vol.66 (3), p.341-372
Descrição: A fully coupled formulation combining reactive transport and an existing thermo-hydro-mechanical (THM) code is presented. Special attention has been given to phenomena likely to be encountered in clay barriers used as part of containment systems of nuclear waste. The types of processes considered include hydrolysis, complex formation, oxidation/reduction reactions, acid/base reactions, precipitation/dissolution of minerals and cation exchange. Both kinetically-controlled and equilibrium-controlled reactions have been incorporated. The total analytical concentrations (including precipitated minerals) are adopted as basic transport variables and chemical equilibrium is achieved by minimizing Gibbs Free Energy. The formulation has been incorporated in a general purpose computer code capable of performing numerical analysis of engineering problems. A validation exercise concerning a laboratory experiment involving the heating and hydration of an expansive compacted clay is described.
Editor: Dordrecht: Springer
Idioma: Inglês

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Coupled thermo-hydro-mechanical and chemical analysis of expansive clay subjected to heating and hydration

GUIMARAES, L. Do N ; GENS, A ; OLIVELLA, S

Dordrecht: Springer

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