Numerical model of free swelling processes in compacted MX-80 bentonites

This work proposes a formulation to simulate the swelling of compacted bentonites, focusing the analysis on the modelling of the increase of macrostructural void ratio generated by the destructuration of the microstructure under low confinement conditions. First, its formulation is described, highli...

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Authors: Navarro Gamir, Vicente, Morena Borja, Gema de la, Alonso Aperte, Juan, González Arteaga, Jesús, Asensio Sánchez, Laura
Format: article
Publication Date:2021
Country:España
Institution:Universidad de Castilla-La Mancha
Repository:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/37539
Online Access:https://doi.org/10.1016/j.ijrmms.2021.104713
https://hdl.handle.net/10578/37539
Access Level:Open access
Keyword:Bentonite barriers
Chemical properties
Constitutive model
Free swelling
Numerical modelling
Radioactive waste disposal
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spelling Numerical model of free swelling processes in compacted MX-80 bentonitesNavarro Gamir, VicenteMorena Borja, Gema de laAlonso Aperte, JuanGonzález Arteaga, JesúsAsensio Sánchez, LauraBentonite barriersChemical propertiesConstitutive modelFree swellingNumerical modellingRadioactive waste disposalThis work proposes a formulation to simulate the swelling of compacted bentonites, focusing the analysis on the modelling of the increase of macrostructural void ratio generated by the destructuration of the microstructure under low confinement conditions. First, its formulation is described, highlighting its integration into a generalised constitutive model, which is able to describe the behaviour of compacted bentonites under very different conditions of stress, salinity and water content. After, its scope is assessed, comparing the model predictions with experimental results of free swelling tests performed under different salinity conditions. The results obtained are very satisfactory, especially considering that the proposed swelling model is based on only two material parameters.Elsevier202420242021info:eu-repo/semantics/articleapplication/pdfapplication/pdfhttps://doi.org/10.1016/j.ijrmms.2021.104713https://hdl.handle.net/10578/37539reponame:RUIdeRA. Repositorio Institucional de la UCLMinstname:Universidad de Castilla-La ManchaInglésinfo:eu-repo/semantics/openAccessoai:ruidera.uclm.es:10578/375392026-05-27T07:36:41Z
dc.title.none.fl_str_mv Numerical model of free swelling processes in compacted MX-80 bentonites
title Numerical model of free swelling processes in compacted MX-80 bentonites
spellingShingle Numerical model of free swelling processes in compacted MX-80 bentonites
Navarro Gamir, Vicente
Bentonite barriers
Chemical properties
Constitutive model
Free swelling
Numerical modelling
Radioactive waste disposal
title_short Numerical model of free swelling processes in compacted MX-80 bentonites
title_full Numerical model of free swelling processes in compacted MX-80 bentonites
title_fullStr Numerical model of free swelling processes in compacted MX-80 bentonites
title_full_unstemmed Numerical model of free swelling processes in compacted MX-80 bentonites
title_sort Numerical model of free swelling processes in compacted MX-80 bentonites
dc.creator.none.fl_str_mv Navarro Gamir, Vicente
Morena Borja, Gema de la
Alonso Aperte, Juan
González Arteaga, Jesús
Asensio Sánchez, Laura
author Navarro Gamir, Vicente
author_facet Navarro Gamir, Vicente
Morena Borja, Gema de la
Alonso Aperte, Juan
González Arteaga, Jesús
Asensio Sánchez, Laura
author_role author
author2 Morena Borja, Gema de la
Alonso Aperte, Juan
González Arteaga, Jesús
Asensio Sánchez, Laura
author2_role author
author
author
author
dc.subject.none.fl_str_mv Bentonite barriers
Chemical properties
Constitutive model
Free swelling
Numerical modelling
Radioactive waste disposal
topic Bentonite barriers
Chemical properties
Constitutive model
Free swelling
Numerical modelling
Radioactive waste disposal
description This work proposes a formulation to simulate the swelling of compacted bentonites, focusing the analysis on the modelling of the increase of macrostructural void ratio generated by the destructuration of the microstructure under low confinement conditions. First, its formulation is described, highlighting its integration into a generalised constitutive model, which is able to describe the behaviour of compacted bentonites under very different conditions of stress, salinity and water content. After, its scope is assessed, comparing the model predictions with experimental results of free swelling tests performed under different salinity conditions. The results obtained are very satisfactory, especially considering that the proposed swelling model is based on only two material parameters.
publishDate 2021
dc.date.none.fl_str_mv 2021
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.ijrmms.2021.104713
https://hdl.handle.net/10578/37539
url https://doi.org/10.1016/j.ijrmms.2021.104713
https://hdl.handle.net/10578/37539
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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 15,81155

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