Estudio del comportamiento hidráulico y mecánico de mezclas granulares con bentonita para barreras de ingeniería
[ANGLÈS] This document presents the results obtained by UPC-DIT-GEOLAB on the hydromechanical behaviour of two different artificially prepared sand/bentonite mixtures used as Engineered Barrier Systems in two different Projects. One of them is a Sand/Bentonite mixture (80%/20%, mixed by mass), propo...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2012 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | español |
| OAI Identifier: | oai:upcommons.upc.edu:2099.1/17283 |
| Acceso en línea: | https://hdl.handle.net/2099.1/17283 |
| Access Level: | acceso abierto |
| Palabra clave: | Radioactive waste sites Soil mechanics Clay--Testing Abocadors de residus radioactius Mecànica dels sòls Argila--Proves Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls |
| Sumario: | [ANGLÈS] This document presents the results obtained by UPC-DIT-GEOLAB on the hydromechanical behaviour of two different artificially prepared sand/bentonite mixtures used as Engineered Barrier Systems in two different Projects. One of them is a Sand/Bentonite mixture (80%/20%, mixed by mass), proposed as filling material in the Project GMT in situ test (Gas Migration Test in the Grimsel Test Site, Switzerland), for the study of the water and air migration through the backfill system. This information is a key issue to interpret the planned gas injection phase of the in situ experiment. In addition, the tests will be used to derive parameters related to air flow, which enter into the intended modelling work of the GMT Project. The other one is a FoCa Clay/Sand/Graphite mixture (60%/35%/5%, mixed by mass), proposed as filling material in the Project PRACLAY and specifically used in the “Ophelie” mock-up test, recently dismantled, in which THM characterization was obtained. This information will be compared with the results obtained in the present laboratory work. To enhance the understanding of the coupled hydro-mechanical response of these mixtures, an experimental programme, compatible with a minimum amount of testing and a reliable determination of material parameters, was performed within a time schedule of 16 months. The tests were used to derive parameters related to shear strength and compressibility for load changes at different saturation states. |
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