Compacted bentonite hydro-mechanical modelling when interaggregate porosity tends to zero

A formulation is proposed for reproducing the hydro-mechanical behaviour of compacted bentonites as interaggregate porosity becomes negligible. In that case, the model assumes the bentonite deformability to be controlled only by the microstructural modelling level in a double porosity approach. Henc...

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Autores: Navarro, Vicente, Asensio, Laura, Cabrera Soto, Virginia, de la Morena Borja, Gema, Yustres Real, Ángel, Torres Serra, Joel|||0000-0002-2267-4570
Tipo de recurso: artículo
Fecha de publicación:2023
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/387761
Acceso en línea:https://hdl.handle.net/2117/387761
https://dx.doi.org/10.1007/s12665-023-10936-w
Access Level:acceso abierto
Palabra clave:Bentonite
Compacted bentonite
Interaggregate porosity
Macroscopic model
Modelling levels
Macrostructure
Microstructure
Bentonita
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
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spelling Compacted bentonite hydro-mechanical modelling when interaggregate porosity tends to zeroNavarro, VicenteAsensio, LauraCabrera Soto, Virginiade la Morena Borja, GemaYustres Real, ÁngelTorres Serra, Joel|||0000-0002-2267-4570BentoniteCompacted bentoniteInteraggregate porosityMacroscopic modelModelling levelsMacrostructureMicrostructureBentonitaÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòlsA formulation is proposed for reproducing the hydro-mechanical behaviour of compacted bentonites as interaggregate porosity becomes negligible. In that case, the model assumes the bentonite deformability to be controlled only by the microstructural modelling level in a double porosity approach. Hence, the bulk stiffness of the system is defined by the relationship between the microstructural void ratio and the thermodynamic swelling pressure, requiring no additional parameters to simulate the overall behaviour. An experimental study has been conducted to check the conceptual consistency of the formulation, with favourable results. The quantitative potential of the model has also been satisfactorily verified by numerical simulation of the tests carried out in this study. A displacement-based finite-element model developed for double porosity systems has been modified to run the simulations. The proposed formulation has been implemented using a simple strategy that can be easily replicated for similar numerical models. Both the simulation capabilities and the computational cost efficiency of the proposed formulation confirm its practical interest.Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This publication is part of Grant PID2020-118291RB-I00 funded by MCIN/AEI/https://doi.org/10.13039/501100011033.Peer ReviewedSpringer20232023-05-0120232023-05-23journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/387761https://dx.doi.org/10.1007/s12665-023-10936-wreponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3877612026-05-27T15:37:01Z
dc.title.none.fl_str_mv Compacted bentonite hydro-mechanical modelling when interaggregate porosity tends to zero
title Compacted bentonite hydro-mechanical modelling when interaggregate porosity tends to zero
spellingShingle Compacted bentonite hydro-mechanical modelling when interaggregate porosity tends to zero
Navarro, Vicente
Bentonite
Compacted bentonite
Interaggregate porosity
Macroscopic model
Modelling levels
Macrostructure
Microstructure
Bentonita
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
title_short Compacted bentonite hydro-mechanical modelling when interaggregate porosity tends to zero
title_full Compacted bentonite hydro-mechanical modelling when interaggregate porosity tends to zero
title_fullStr Compacted bentonite hydro-mechanical modelling when interaggregate porosity tends to zero
title_full_unstemmed Compacted bentonite hydro-mechanical modelling when interaggregate porosity tends to zero
title_sort Compacted bentonite hydro-mechanical modelling when interaggregate porosity tends to zero
dc.creator.none.fl_str_mv Navarro, Vicente
Asensio, Laura
Cabrera Soto, Virginia
de la Morena Borja, Gema
Yustres Real, Ángel
Torres Serra, Joel|||0000-0002-2267-4570
author Navarro, Vicente
author_facet Navarro, Vicente
Asensio, Laura
Cabrera Soto, Virginia
de la Morena Borja, Gema
Yustres Real, Ángel
Torres Serra, Joel|||0000-0002-2267-4570
author_role author
author2 Asensio, Laura
Cabrera Soto, Virginia
de la Morena Borja, Gema
Yustres Real, Ángel
Torres Serra, Joel|||0000-0002-2267-4570
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Bentonite
Compacted bentonite
Interaggregate porosity
Macroscopic model
Modelling levels
Macrostructure
Microstructure
Bentonita
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
topic Bentonite
Compacted bentonite
Interaggregate porosity
Macroscopic model
Modelling levels
Macrostructure
Microstructure
Bentonita
Àrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
description A formulation is proposed for reproducing the hydro-mechanical behaviour of compacted bentonites as interaggregate porosity becomes negligible. In that case, the model assumes the bentonite deformability to be controlled only by the microstructural modelling level in a double porosity approach. Hence, the bulk stiffness of the system is defined by the relationship between the microstructural void ratio and the thermodynamic swelling pressure, requiring no additional parameters to simulate the overall behaviour. An experimental study has been conducted to check the conceptual consistency of the formulation, with favourable results. The quantitative potential of the model has also been satisfactorily verified by numerical simulation of the tests carried out in this study. A displacement-based finite-element model developed for double porosity systems has been modified to run the simulations. The proposed formulation has been implemented using a simple strategy that can be easily replicated for similar numerical models. Both the simulation capabilities and the computational cost efficiency of the proposed formulation confirm its practical interest.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-05-01
2023
2023-05-23
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/387761
https://dx.doi.org/10.1007/s12665-023-10936-w
url https://hdl.handle.net/2117/387761
https://dx.doi.org/10.1007/s12665-023-10936-w
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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