Ara es mostren els items 21-40 de 64

    • FEBEX Stage2: UPC modelling report 2020 

      Rodríguez Dono, Alfonso (2020-01)
      Report de recerca
      Accés obert
      The 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 

      Romero Morales, Enrique Edgar; González Blanco, Laura; Marschall, Paul (European Association of Geoscientists & Engineers (EAGE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The 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 

      González Blanco, Laura; Romero Morales, Enrique Edgar; Marschall, Paul (EDP Sciences, 2020-10)
      Article
      Accés obert
      The 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 

      Saaltink, Maarten Willem; Soler Matamala, Josep M. (2016-04)
      Report de recerca
      Accés obert
      Within 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 

      Vidal Montes, Rubén; Olivella Pastallé, Sebastià; Saaltink, Maarten Willem; Diaz-Maurin, François Carlos León (2022-10)
      Article
      Accés obert
      High-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 

      Alonso Pérez de Agreda, Eduardo; Lloret Morancho, Antonio; Gens Solé, Antonio; Delahaye, Carlos Héctor; Facio, J.A. (1996-01)
      Article
      Accés restringit per política de l'editorial
      Se 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 

      Gens Solé, Antonio; Alcoverro Bassols, Jordi; Blaheta, Radim; Hasal, Martin; Michalec, Zdenek; Takayama, Yusuke; Lee, Changsoo; Lee, Jaewon; Kim, Geon Young; Kuo, Wan-Jung; Chia-Wei, Kuo; Li, Chung-Yi (Elsevier, 2021-01)
      Article
      Accés obert
      Bentonite-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 

      Gens Solé, Antonio; Barboza de Vasconcelos, Ramón; Rodríguez Romero, Carlos Eduardo; Vaunat, Jean; Villar Galicia, María Victoria (2021-07)
      Article
      Accés obert
      Las 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 

      Mokni, Nadia; Olivella Pastallé, Sebastià; Valcke, Elie; Bleyen, N; Smets, Esteven; Li, Xiang Ling; Sillen, X. (2014-06)
      Article
      Accés obert
      The 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 

      Ruiz Restrepo, Daniel Felipe; Vaunat, Jean; Gens Solé, Antonio; Mánica Malcom, Miguel Ángel (CRC Press, 2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The 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 

      González Blanco, Laura; Romero Morales, Enrique Edgar; Marschall, Paul; Levasseur, Severine (2022-03)
      Article
      Accés obert
      During 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 

      González Blanco, Laura; Romero Morales, Enrique Edgar; Li, Xiang Ling; Sillen, X. (Engineers Australia, 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      An 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 

      Abed, A. A.; Solowski, W; Romero Morales, Enrique Edgar; Gens Solé, Antonio (The Hong Kong University of Science and Technology (HKUST), 2018)
      Comunicació de congrés
      Accés obert
      Bentonite-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 

      Schäfers, Annika; Gens Solé, Antonio; Rodríguez Dono, Alfonso (2020-02)
      Article
      Accés obert
      Previous 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 

      Yamamoto, Shuichi; Sato, Shin; Tomoyuki, Shimura; Romero Morales, Enrique Edgar; NISHIMURA, Tomoyoshi; OWADA, Hitoshi (Japan Society of Civil Engineers, 2019-07)
      Article
      Accés restringit per política de l'editorial
      Bentonite-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 

      Mesa Alcantara, Arisleidy; Romero Morales, Enrique Edgar; Mokni, Nadia; Olivella Pastallé, Sebastià (EDP Sciences, 2020-10)
      Article
      Accés obert
      Binary 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 

      Ramírez Ramírez, Edwin Vicente (Universitat Politècnica de Catalunya, 2014-12)
      Projecte Final de Màster Oficial
      Accés obert
      El 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 

      Romero Morales, Enrique Edgar; Senger, Rainer; Marschall, Paul (2015)
      Text en actes de congrés
      Accés obert
      The 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 

      Senger, Rainer; Namhata, Argha; Papafotiou, Alexandros; Marschall, Paul; Romero Morales, Enrique Edgar (2018)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In 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 

      Puig Damians, Ivan; Olivella Pastallé, Sebastià; Gens Solé, Antonio (International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE), 2019)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A 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 ...