Simple modelling of fast hydration processes in bentonite pellet fills

A novel hydro-mechanical formulation is presented to simulate the fast wetting of bentonite pellet fills. The model is based on a triple porosity concept, but its formulation uses a double porosity structure for simplicity. It is assumed that the fast wetting process results in a liquid pressure in...

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Detalles Bibliográficos
Autores: Asensio Sánchez, Laura, De la Morena, Gema, Alonso Aperte, Juan, Navarro Gamir, Vicente, Rojo Guillen, Tomás
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/36405
Acceso en línea:https://hdl.handle.net/10578/36405
Access Level:acceso abierto
Palabra clave:Bentonite
Pellets
Triple porosity model
Double porosity model
Hydro-mechanical model
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spelling Simple modelling of fast hydration processes in bentonite pellet fillsAsensio Sánchez, LauraDe la Morena, GemaAlonso Aperte, JuanNavarro Gamir, VicenteRojo Guillen, TomásBentonitePelletsTriple porosity modelDouble porosity modelHydro-mechanical modelA novel hydro-mechanical formulation is presented to simulate the fast wetting of bentonite pellet fills. The model is based on a triple porosity concept, but its formulation uses a double porosity structure for simplicity. It is assumed that the fast wetting process results in a liquid pressure in the inter-pellet voids equal to the boundary liquid pressure. This enables the system of equations to be solved to have the same structure than that used to analyse the behaviour of the bentonite blocks with numerical tools based on double porosity approaches. Thus, it is relatively simple to extend such tools to incorporate the triple porosity conceptual model that is presented in this paper. To assess the scope of the proposed formulation, a set of tests in which the inter-pellet void space is rapidly flooded and a test in which the inter-pellet void space is circulated with progressively more humid air are simulated. The results obtained for pellets fills of both FEBEX and MX-80 bentonites are very satisfactory, despite the simplicity of the formulation presented.Elsevier202420242023info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/10578/36405reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésSBPLY/19/180501/000222info:eu-repo/semantics/openAccessAttribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/oai:ruidera.uclm.es:10578/364052026-05-27T07:36:41Z
dc.title.none.fl_str_mv Simple modelling of fast hydration processes in bentonite pellet fills
title Simple modelling of fast hydration processes in bentonite pellet fills
spellingShingle Simple modelling of fast hydration processes in bentonite pellet fills
Asensio Sánchez, Laura
Bentonite
Pellets
Triple porosity model
Double porosity model
Hydro-mechanical model
title_short Simple modelling of fast hydration processes in bentonite pellet fills
title_full Simple modelling of fast hydration processes in bentonite pellet fills
title_fullStr Simple modelling of fast hydration processes in bentonite pellet fills
title_full_unstemmed Simple modelling of fast hydration processes in bentonite pellet fills
title_sort Simple modelling of fast hydration processes in bentonite pellet fills
dc.creator.none.fl_str_mv Asensio Sánchez, Laura
De la Morena, Gema
Alonso Aperte, Juan
Navarro Gamir, Vicente
Rojo Guillen, Tomás
author Asensio Sánchez, Laura
author_facet Asensio Sánchez, Laura
De la Morena, Gema
Alonso Aperte, Juan
Navarro Gamir, Vicente
Rojo Guillen, Tomás
author_role author
author2 De la Morena, Gema
Alonso Aperte, Juan
Navarro Gamir, Vicente
Rojo Guillen, Tomás
author2_role author
author
author
author
dc.subject.none.fl_str_mv Bentonite
Pellets
Triple porosity model
Double porosity model
Hydro-mechanical model
topic Bentonite
Pellets
Triple porosity model
Double porosity model
Hydro-mechanical model
description A novel hydro-mechanical formulation is presented to simulate the fast wetting of bentonite pellet fills. The model is based on a triple porosity concept, but its formulation uses a double porosity structure for simplicity. It is assumed that the fast wetting process results in a liquid pressure in the inter-pellet voids equal to the boundary liquid pressure. This enables the system of equations to be solved to have the same structure than that used to analyse the behaviour of the bentonite blocks with numerical tools based on double porosity approaches. Thus, it is relatively simple to extend such tools to incorporate the triple porosity conceptual model that is presented in this paper. To assess the scope of the proposed formulation, a set of tests in which the inter-pellet void space is rapidly flooded and a test in which the inter-pellet void space is circulated with progressively more humid air are simulated. The results obtained for pellets fills of both FEBEX and MX-80 bentonites are very satisfactory, despite the simplicity of the formulation presented.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/10578/36405
url https://hdl.handle.net/10578/36405
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv SBPLY/19/180501/000222
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:RUIdeRA. Repositorio Institucional de la UCLM
instname:Universidad de Castilla-La Mancha
instname_str Universidad de Castilla-La Mancha
reponame_str RUIdeRA. Repositorio Institucional de la UCLM
collection RUIdeRA. Repositorio Institucional de la UCLM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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