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Article: Influence of structure on the time-dependent behaviour of a stiff sedimentary clay

TitleInfluence of structure on the time-dependent behaviour of a stiff sedimentary clay
Authors
KeywordsClays
Fabric/structure of soils
Laboratory tests
Time dependence
Issue Date2007
PublisherThomas Telford Ltd. The Journal's web site is located at http://www.geotechnique-ice.com
Citation
Geotechnique, 2007, v. 57 n. 1, p. 113-124 How to Cite?
AbstractIn this paper results from laboratory tests on London Clay and artificially cemented kaolin are presented and used to develop a preliminary framework for the time-dependent behaviour of soils, applicable to stiff clays and other soils. In the same way that the natural structure of clays has been shown to influence their monotonic behaviour, it is shown that it can also alter their response to changes in strain rate. The relative influence of the two main components of post-sedimentation structure - over-consolidation and diagenesis - on the time-dependent behaviour of London Clay was investigated in triaxial compression tests. The study was carried out in two steps, comparing first the behaviours of normally and overconsolidated reconstituted samples of London Clay subjected to stepwise changes in strain rate, and then the behaviours of overconsolidated reconstituted and undisturbed London Clay samples. The test results show that overconsolidation does not seem to affect the response of reconstituted London Clay to strain rate changes, which is consistent with published data on other stiff clays. However, intact and reconstituted overconsolidated samples show different behaviours, highlighting that it is the elements of structure resulting from diagenesis that influence the time-dependent behaviour of London Clay. Effects of cementing on strain rate sensitivity were investigated in triaxial compression of artificially cemented kaolin. The results obtained were different from the results for London Clay, suggesting that the difference in strain rate effects in the intact and reconstituted London Clay cannot be simply associated with cementing. A preliminary framework is proposed, where the time-dependent behaviour of soil depends on its participate or continuum nature.
Persistent Identifierhttp://hdl.handle.net/10722/91230
ISSN
2015 Impact Factor: 2.0
2015 SCImago Journal Rankings: 2.837
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSorensen, KKen_HK
dc.contributor.authorBaudet, BAen_HK
dc.contributor.authorSimpson, Ben_HK
dc.date.accessioned2010-09-17T10:15:14Z-
dc.date.available2010-09-17T10:15:14Z-
dc.date.issued2007en_HK
dc.identifier.citationGeotechnique, 2007, v. 57 n. 1, p. 113-124en_HK
dc.identifier.issn0016-8505en_HK
dc.identifier.urihttp://hdl.handle.net/10722/91230-
dc.description.abstractIn this paper results from laboratory tests on London Clay and artificially cemented kaolin are presented and used to develop a preliminary framework for the time-dependent behaviour of soils, applicable to stiff clays and other soils. In the same way that the natural structure of clays has been shown to influence their monotonic behaviour, it is shown that it can also alter their response to changes in strain rate. The relative influence of the two main components of post-sedimentation structure - over-consolidation and diagenesis - on the time-dependent behaviour of London Clay was investigated in triaxial compression tests. The study was carried out in two steps, comparing first the behaviours of normally and overconsolidated reconstituted samples of London Clay subjected to stepwise changes in strain rate, and then the behaviours of overconsolidated reconstituted and undisturbed London Clay samples. The test results show that overconsolidation does not seem to affect the response of reconstituted London Clay to strain rate changes, which is consistent with published data on other stiff clays. However, intact and reconstituted overconsolidated samples show different behaviours, highlighting that it is the elements of structure resulting from diagenesis that influence the time-dependent behaviour of London Clay. Effects of cementing on strain rate sensitivity were investigated in triaxial compression of artificially cemented kaolin. The results obtained were different from the results for London Clay, suggesting that the difference in strain rate effects in the intact and reconstituted London Clay cannot be simply associated with cementing. A preliminary framework is proposed, where the time-dependent behaviour of soil depends on its participate or continuum nature.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.subjectFabric/structure of soilsen_HK
dc.subjectLaboratory testsen_HK
dc.subjectTime dependenceen_HK
dc.titleInfluence of structure on the time-dependent behaviour of a stiff sedimentary clayen_HK
dc.typeArticleen_HK
dc.identifier.emailBaudet, BA:baudet@hku.hken_HK
dc.identifier.authorityBaudet, BA=rp01303en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1680/geot.2007.57.1.113en_HK
dc.identifier.scopuseid_2-s2.0-33846856232en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33846856232&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume57en_HK
dc.identifier.issue1en_HK
dc.identifier.spage113en_HK
dc.identifier.epage124en_HK
dc.identifier.isiWOS:000244504900010-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridSorensen, KK=36994189400en_HK
dc.identifier.scopusauthoridBaudet, BA=15841467600en_HK
dc.identifier.scopusauthoridSimpson, B=7102222020en_HK

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