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Article: A constitutive model for structured clays

TitleA constitutive model for structured clays
Authors
KeywordsClays
Constitutive relations
Fabric/structure of soils
Issue Date2004
PublisherThomas Telford Ltd. The Journal's web site is located at http://www.geotechnique-ice.com
Citation
Geotechnique, 2004, v. 54 n. 4, p. 269-278 How to Cite?
AbstractA simple constitutive model for structured clays is presented. The model is based on an existing constitutive model for reconstituted clays. It uses a fixed relationship between change in sensitivity and plastic strain to represent destructuration so that all predicted effects of structure are included in the value of sensitivity. Only three added parameters are required, which can each be derived from a single isotropic compression test. All other parameters are the same as those used in the base model, which are derived from test data on reconstituted specimens. A value of ultimate sensitivity greater than unity allows the model to simulate clays with stable and/or metastable structure. Results from a parametric study show that the model predicts responses during compression and shearing typical of natural clays. The model was applied to test data from a natural soft clay using parameters derived where possible from isotropic compression tests. Results from the analyses prove that the simplified formulation of the model is sufficient to significantly improve predictions.
Persistent Identifierhttp://hdl.handle.net/10722/91231
ISSN
2015 Impact Factor: 2.0
2015 SCImago Journal Rankings: 2.837
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorBaudet, Ben_HK
dc.contributor.authorStallebrass, Sen_HK
dc.date.accessioned2010-09-17T10:15:15Z-
dc.date.available2010-09-17T10:15:15Z-
dc.date.issued2004en_HK
dc.identifier.citationGeotechnique, 2004, v. 54 n. 4, p. 269-278en_HK
dc.identifier.issn0016-8505en_HK
dc.identifier.urihttp://hdl.handle.net/10722/91231-
dc.description.abstractA simple constitutive model for structured clays is presented. The model is based on an existing constitutive model for reconstituted clays. It uses a fixed relationship between change in sensitivity and plastic strain to represent destructuration so that all predicted effects of structure are included in the value of sensitivity. Only three added parameters are required, which can each be derived from a single isotropic compression test. All other parameters are the same as those used in the base model, which are derived from test data on reconstituted specimens. A value of ultimate sensitivity greater than unity allows the model to simulate clays with stable and/or metastable structure. Results from a parametric study show that the model predicts responses during compression and shearing typical of natural clays. The model was applied to test data from a natural soft clay using parameters derived where possible from isotropic compression tests. Results from the analyses prove that the simplified formulation of the model is sufficient to significantly improve predictions.en_HK
dc.languageengen_HK
dc.publisherThomas Telford Ltd. The Journal's web site is located at http://www.geotechnique-ice.comen_HK
dc.relation.ispartofGeotechniqueen_HK
dc.subjectClaysen_HK
dc.subjectConstitutive relationsen_HK
dc.subjectFabric/structure of soilsen_HK
dc.titleA constitutive model for structured claysen_HK
dc.typeArticleen_HK
dc.identifier.emailBaudet, B:baudet@hku.hken_HK
dc.identifier.authorityBaudet, B=rp01303en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1680/geot.54.4.269.36354en_HK
dc.identifier.scopuseid_2-s2.0-2542428720en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-2542428720&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume54en_HK
dc.identifier.issue4en_HK
dc.identifier.spage269en_HK
dc.identifier.epage278en_HK
dc.identifier.isiWOS:000222587900004-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridBaudet, B=15841467600en_HK
dc.identifier.scopusauthoridStallebrass, S=6603361653en_HK

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