A laboratory study of post-rupture strength

Georgiannou, VN; Burland, JB

dc.contributor.author	Georgiannou, VN	en
dc.contributor.author	Burland, JB	en
dc.date.accessioned	2014-03-01T01:16:00Z
dc.date.available	2014-03-01T01:16:00Z
dc.date.issued	2001	en
dc.identifier.issn	0016-8505	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13874
dc.subject	Clays	en
dc.subject	Fabric/structure of soils	en
dc.subject	Laboratory tests	en
dc.subject	Shear strength	en
dc.subject	Slip surfaces	en
dc.subject.classification	Engineering, Geological	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	Clay	en
dc.subject.other	Compaction	en
dc.subject.other	Sensitivity analysis	en
dc.subject.other	Stiffness	en
dc.subject.other	Stresses	en
dc.subject.other	Post-rupture strength	en
dc.subject.other	Slip surfaces	en
dc.subject.other	Geotechnical engineering	en
dc.subject.other	clay	en
dc.subject.other	shear strength	en
dc.subject.other	slip	en
dc.subject.other	soil strength	en
dc.subject.other	soil structure	en
dc.title	A laboratory study of post-rupture strength	en
heal.type	journalArticle	en
heal.identifier.primary	10.1680/geot.51.8.665.40468	en
heal.identifier.secondary	http://dx.doi.org/10.1680/geot.51.8.665.40468	en
heal.language	English	en
heal.publicationDate	2001	en
heal.abstract	Stiff intact clays exhibit rapid loss of strength after failure, with the formation of slip surfaces and the development of a well-defined 'post-rupture' strength envelope. This paper describes an experimental study of the influence of a number of factors on the post-rupture strength of initially intact samples of Vallericca Clay. These include changes in confining pressure after the formation of a slip surface, the magnitude of the relative displacement across the surface, comparison between the post-rupture strength envelopes in triaxial compression and extension, and the influence of existing slip surfaces on the formation and strength of subsequent rupture planes formed by rotation of the principal stresses. The results show that the post-rupture strength envelope is well defined, repeatable, and not very sensitive to stress history or the rotation of the principal stresses. Little reduction in shearing resistance takes place for relative displacements up to about 10 mm. The results are believed to be of significance in understanding the formation of fissures in stiff clays, and in evaluating their operational strength.	en
heal.publisher	THOMAS TELFORD SERVICES LTD	en
heal.journalName	Geotechnique	en
dc.identifier.doi	10.1680/geot.51.8.665.40468	en
dc.identifier.isi	ISI:000171642600002	en
dc.identifier.volume	51	en
dc.identifier.issue	8	en
dc.identifier.spage	665	en
dc.identifier.epage	675	en