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@inproceedings{Ghiadistri:2019:10.32075/17ECSMGE-2019-0507,
author = {Ghiadistri, GM and Zdravkovic, L and Potts, DM and Tsiampousi, A},
doi = {10.32075/17ECSMGE-2019-0507},
title = {Modelling the behaviour of swelling clays in a Geological Disposal Facility (GDF)},
url = {http://dx.doi.org/10.32075/17ECSMGE-2019-0507},
year = {2019}
}

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TY  - CPAPER
AB  - This paper discusses the numerical modelling of the buffer material in a Geological Disposal Facility (GDF), by simulating the FEBEX in-situ experiment. The test was conducted over 18 years at the Grimsel site in Switzerland, under the conditions of a real GDF, with compacted bentonite blocks used as the buffer material and a heater replacing the nuclear waste canister. Particular emphasis in the paper is given to the constitutive modelling of the FEBEX bentonite, highlighting the importance of accounting in the model for the double porosity structure of the compacted bentonite. Furthermore, the coupled thermo-hydro-mechanical (THM) finite element analysis also emphasises the importance of realistic modelling of the evolution of the hydraulic permeability of the bentonite with the changing suctions. The analysis results demonstrate substantial agreement between numerical predictions and FEBEX field measurements in terms of the buffer’s THM evolution. The area of the host formation affected by the test is also defined and investigated in order to provide useful information for the design of a GDF.
AU  - Ghiadistri,GM
AU  - Zdravkovic,L
AU  - Potts,DM
AU  - Tsiampousi,A
DO  - 10.32075/17ECSMGE-2019-0507
PY  - 2019///
TI  - Modelling the behaviour of swelling clays in a Geological Disposal Facility (GDF)
UR  - http://dx.doi.org/10.32075/17ECSMGE-2019-0507
ER  -

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DR KATERINA TSIAMPOUSI

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