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Determination of the thermal parameters of a clay from heating cell tests
Romero Morales, Enrique Edgar; Lima Amorim, Analice França; Gens Solé, Antonio; Vaunat, Jean; Li, X. L.
Universitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica; Universitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
Boom Clay is being studied in Belgium in connection with the design of a repository for radioactive waste. Within this context, thermal impact may play an important role on the behaviour of this low-permeability clay. To evaluate this impact, heating pulse tests on intact borehole samples were carried out using an axi-symmetric and constant volume heating cell with controlled hydraulic boundary conditions. Attention is focused on the time evolution of temperature and pore water pressure changes along heating and cooling paths –i.e., pore pressure build-up during quasi-undrained heating and later dissipation to the applied hydraulic boundary conditions–. A coupled thermo-hydro-mechanical finite element program was used in a first stage to determine thermal parameters by back-analysis and then to simulate the experimental results.
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
Clay soils
Radioactive waste disposal in the ground
heating cell
clay
thermal conductivity
back-analysis
experimental results
numerical simulation
Sòls argilosos
Residus radioactius -- Emplaçament
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