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THM and reactive transport analysis of expansive clay barrier in radioactive waste isolation

Guimarães, L.D.N. and Gens, A. and Sanchez, Marcelo and Olivella, S. (2006) THM and reactive transport analysis of expansive clay barrier in radioactive waste isolation. Communications in Numerical Methods in Engineering, 22 (8). pp. 849-859. ISSN 1069-8299

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Abstract

A fully coupled formulation combining reactive transport and an existing thermo-hydro-mechanical (THM) code is briefly described. 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 in the chemical formulation 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 formulation has been implemented in the finite element code CODE_BRIGHT. An application is presented concerning the performance of a large scale in situ heating test simulating high-level nuclear waste repository conditions.

Item type: Article
ID code: 4810
Keywords: thermo-hydro-mechanical, clay barriers, nuclear waste, containment systems, hydrolysis, complex formation, oxidation/reduction reactions, acid/base reactions, cation exchange, Engineering (General). Civil engineering (General), Modelling and Simulation, Computational Theory and Mathematics, Software, Applied Mathematics, Engineering(all)
Subjects: Technology > Engineering (General). Civil engineering (General)
Department: Faculty of Engineering > Civil and Environmental Engineering
Related URLs:
    Depositing user: Strathprints Administrator
    Date Deposited: 25 Nov 2007
    Last modified: 04 Sep 2014 17:20
    URI: http://strathprints.strath.ac.uk/id/eprint/4810

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