Exploració per tema "Radioactive waste disposal in the ground"
Ara es mostren els items 21-40 de 64
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FEBEX Stage2: UPC modelling report 2020
(2020-01)
Report de recerca
Accés obertThe present report contains the description of a model for the large-scale in situ heating test FEBEX (full-scale engineered barrier experiment). In this test, after five years of heating, one of the heaters was switched ... -
Gas migration and coupled hydro-mechanical issues in claystones for radioactive waste disposal at great depth
(European Association of Geoscientists & Engineers (EAGE), 2015)
Text en actes de congrés
Accés restringit per política de l'editorialThe hydro-mechanical behaviour of shales is becoming an important issue in current energy-related geomechanical investigations, such as CO2 sequestration, extraction of gas shale and nuclear waste geological storage. ... -
Gas transport in granular compacted bentonite: coupled hydro-mechanical interactions and microstructural features
(EDP Sciences, 2020-10)
Article
Accés obertThe initial conditions (dry density and saturation state), the stress state and its history, and the deformation undergone during gas migration, affect the gas transport processes in granular compacted bentonite. Additionally, ... -
Grimsel test site - Long-term cement studies.Reactive transport modeling of experiment 2 at Grimsel
(2016-04)
Report de recerca
Accés obertWithin the framework of the GTS-LCS project (Grimsel Test Site – Long-Term Cement Studies), an in-situ experiment lasting about 5 years was started in 2009 to study water-cement-rock interactions in fractured granite. A ... -
Heat storage efficiency, ground surface uplift and thermo-hydro-mechanical phenomena for high-temperature aquifer thermal energy storage
(2022-10)
Article
Accés obertHigh-temperature aquifer thermal energy storage (HT-ATES) systems can help in balancing energy demand and supply for better use of infrastructures and resources. The aim of these systems is to store high amounts of heat ... -
Hidratación de un relleno compactado que contiene agregados de alta intensidad
(1996-01)
Article
Accés restringit per política de l'editorialSe han investigado, mediante ensayos de laboratorio, las características de hidratación de mezclas expansivas constituídas por una matriz de polvo arcilloso y agregados (pastillas de pequeño tamaño) de arcilla de alta ... -
HM and THM interactions in bentonite engineered barriers for nuclear waste disposal
(Elsevier, 2021-01)
Article
Accés obertBentonite-based engineered barriers are a key component of many repository designs for the confinement of high-level radioactive waste and spent fuel. Given the complexity and interaction of the phenomena affecting the ... -
Homogenización de barreras de arcilla para residuos nucleares
(2021-07)
Article
Accés obertLas funciones de seguridad de las barreras de bentonita para residuos nucleares dependen principalmente del valor de su densidad seca (o porosidad). La evolución de esta variable durante la fase transitoria de la barrera ... -
Hydro-chemical modelling of in situ behaviour of bituminized radioactive waste in Boom Clay
(2014-06)
Article
Accés obertThe hydro-chemical (CH) interaction between swelling Eurobitum bituminized radioactive waste (BW) and Boom Clay was investigated to assess the feasibility of geological disposal for the long-term management of this waste. ... -
Hydro-mechanical modelling of an unsaturated seal structure
(CRC Press, 2018)
Text en actes de congrés
Accés restringit per política de l'editorialThe paper contains a coupled numerical analysis of the hydration of a potential sealing system for isolating shafts, ramps and connecting galleries in a deep geological repository for high level nuclear waste. The modelling ... -
Hydro-mechanical response to gas transfer of deep argillaceous host rocks for radioactive waste disposal
(2022-03)
Article
Accés obertDuring recent decades, argillaceous sedimentary formations have been studied as potential host formations for the geological disposal of long-living and heat-emitting radioactive waste—Boom Clay in Belgium and Opalinus ... -
Importance of sample volume changes and material degradation on gas transport properties in Boom Clay
(Engineers Australia, 2014)
Text en actes de congrés
Accés restringit per política de l'editorialAn experimental study on Boom Clay –one of thepotential deep clay formationsin Belgium for the geological disposal of long-living and heat-emitting radioactive waste–has been performed using controlled volume-rate gas ... -
Inclusion of chemical effect in a fully coupled THM finite element code
(The Hong Kong University of Science and Technology (HKUST), 2018)
Comunicació de congrés
Accés obertBentonite-rich clays can be used as a buffer / backfill material in deep geological repositories for nuclear waste. The prediction of the long-term performance of a buffer / backfill in such a complex environment, where ... -
Increasing understanding and confidence in THM simulations of engineered barrier systems
(2020-02)
Article
Accés obertPrevious studies on the modelling of coupled thermo-hydro-mechanical (THM) processes in bentonite-based engineered barrier systems (EBSs) showed the sensitivity of the output quantities to changes in the input parameters. ... -
Mechanical characteristics and water retention properties of unsaturated 'bentonite-based engineered barrier materials' based on controlled-suction tests
(Japan Society of Civil Engineers, 2019-07)
Article
Accés restringit per política de l'editorialBentonite-based engineered barrier materials transfer from unsaturated state as emplaced to saturated state after closure of deep geological disposal facilities for radioactive waste, while decrease in saturation could ... -
Microstructural and hydro-mechanical behaviour of bentonite pellets and powder mixtures
(EDP Sciences, 2020-10)
Article
Accés obertBinary mixtures of high-density MX-80 bentonite pellets (80%) and bentonite powder (20%) at hygroscopic water content have been recently considered as an alternative engineered barrier system for the long-term disposal of ... -
Modelación del comportamiento hidro-mecanico de la Arcilla de Boom debido a la construcción de galerías a gran profundidad- caso Clipex
(Universitat Politècnica de Catalunya, 2014-12)
Projecte Final de Màster Oficial
Accés obertEl manejo y disposición final de los residuos radioactivos de alta actividad ha sido un tema debatido durante décadas, ya que este tipo de materiales requieren aislamiento de los seres humanos y del medio ambiente debido ... -
Modeling of gas migration through low-permeability clay using information on pressure and deformation from fast air injection tests
(2015)
Text en actes de congrés
Accés obertThe characterization of gas migration through low-permeability clay formations has been a focus of R&D programs for radioactive waste disposal, which is also of great importance for shale-gas exploration, and cap-rock ... -
Modeling of gas transport through bentonite taking into account subscale structures with process-dependent behaviour
(2018)
Text en actes de congrés
Accés restringit per política de l'editorialIn many nuclear waste disposal concepts bentonite is used as a buffer material forming the near-field around the HLW canisters and the sealing material for the backfilled repository structures. The safety functions of the ... -
Modelling a gas flow experiment in Mx80 bentonite
(International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), 2019)
Text en actes de congrés
Accés restringit per política de l'editorialA gas injection test performed on compact bentonite was carried out at the British Geological Survey. The test is composed of two stages (i.e. hydration followed by gas injection). After gas breakthrough and a period of ...