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Article: An elasto-plastic model for saturated loosely compacted completely decomposed granite

TitleAn elasto-plastic model for saturated loosely compacted completely decomposed granite
Authors
KeywordsCompletely decomposed granite
Constitutive modelling
Critical state
Elasto-plastic
Soil plasticity
Stress-strain relations
Issue Date2008
PublisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/17486025.asp
Citation
Geomechanics And Geoengineering, 2008, v. 3 n. 1, p. 13-25 How to Cite?
AbstractA constitutive model for saturated loosely compacted completely decomposed granite (CDG) under triaxial compression is developed. Using a total of 70 triaxial compression tests as the calibration basis, we established a relationship between the normal compression line (NCL) of the soil and its dry density, and a relationship between the position of the critical state line (CSL) of the soil and its maximum dry density obtained from the standard Proctor test. The state boundary surface proposed by Yu (International Journal for Numerical and Analytical Methods in Geomechanics, 22, 621-653, 1998) was adopted in the current formulation. An empirical relation correlating the amount of fines present with the shape of the yield surface was developed to quantify the effect of particle size distribution (PSD) on the mechanical behaviour of the soil. By introducing a stress-path-dependent correction factor, we showed that the original Cam clay flow rule was generally successful in describing the dilatancy of loose CDG. The model requires only nine basic parameters and was further verified against 18 triaxial compression test results obtained from an independent study. Satisfactory agreement between the simulation and test results was achieved.
Persistent Identifierhttp://hdl.handle.net/10722/71192
ISSN
2015 SCImago Journal Rankings: 0.558
References

 

DC FieldValueLanguage
dc.contributor.authorTo, ECYen_HK
dc.contributor.authorTham, LGen_HK
dc.contributor.authorZhou, YDen_HK
dc.date.accessioned2010-09-06T06:29:46Z-
dc.date.available2010-09-06T06:29:46Z-
dc.date.issued2008en_HK
dc.identifier.citationGeomechanics And Geoengineering, 2008, v. 3 n. 1, p. 13-25en_HK
dc.identifier.issn1748-6025en_HK
dc.identifier.urihttp://hdl.handle.net/10722/71192-
dc.description.abstractA constitutive model for saturated loosely compacted completely decomposed granite (CDG) under triaxial compression is developed. Using a total of 70 triaxial compression tests as the calibration basis, we established a relationship between the normal compression line (NCL) of the soil and its dry density, and a relationship between the position of the critical state line (CSL) of the soil and its maximum dry density obtained from the standard Proctor test. The state boundary surface proposed by Yu (International Journal for Numerical and Analytical Methods in Geomechanics, 22, 621-653, 1998) was adopted in the current formulation. An empirical relation correlating the amount of fines present with the shape of the yield surface was developed to quantify the effect of particle size distribution (PSD) on the mechanical behaviour of the soil. By introducing a stress-path-dependent correction factor, we showed that the original Cam clay flow rule was generally successful in describing the dilatancy of loose CDG. The model requires only nine basic parameters and was further verified against 18 triaxial compression test results obtained from an independent study. Satisfactory agreement between the simulation and test results was achieved.en_HK
dc.languageengen_HK
dc.publisherTaylor & Francis Ltd. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/17486025.aspen_HK
dc.relation.ispartofGeomechanics and Geoengineeringen_HK
dc.subjectCompletely decomposed graniteen_HK
dc.subjectConstitutive modellingen_HK
dc.subjectCritical stateen_HK
dc.subjectElasto-plasticen_HK
dc.subjectSoil plasticityen_HK
dc.subjectStress-strain relationsen_HK
dc.titleAn elasto-plastic model for saturated loosely compacted completely decomposed graniteen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1748-6025&volume=3&spage=13&epage=25&date=2008&atitle=An+elasto-plastic+model+for+saturated+loosely+compacted+completely+decomposed+graniteen_HK
dc.identifier.emailTham, LG: hrectlg@hku.hken_HK
dc.identifier.emailZhou, YD: zhouyuande@gmail.comen_HK
dc.identifier.authorityTham, LG=rp00176en_HK
dc.identifier.authorityZhou, YD=rp00215en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1080/17486020701730058en_HK
dc.identifier.scopuseid_2-s2.0-40449130054en_HK
dc.identifier.hkuros147706en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-40449130054&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume3en_HK
dc.identifier.issue1en_HK
dc.identifier.spage13en_HK
dc.identifier.epage25en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridTo, ECY=23971819000en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK
dc.identifier.scopusauthoridZhou, YD=7405363896en_HK

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