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Article: The critical state friction angle of granular materials: does it depend on grading?

TitleThe critical state friction angle of granular materials: does it depend on grading?
Authors
KeywordsAngle of friction
Critical state
Granular soils
Liquefaction susceptibility
Particle grading
Issue Date2018
PublisherSpringer Verlag.
Citation
Acta Geotechnica, 2018, v. 13 n. 3, p. 535-547 How to Cite?
AbstractWhether the critical state friction angle of granular materials depends on grading is a fundamental question of both academic and practical interest. The present study attempts to address this question through a specifically designed experimental program where the influence of particle grading was carefully isolated from other influencing factors. The laboratory experiments show that under otherwise similar conditions, the angle of friction at critical state is a constant independent of grading, but, for a given grading, the angle of friction at critical state is highly dependent on particle shape. This finding suggests that the commonly adopted practice of separately allowing for the effect of particle shape and the effect of grading on critical state friction angle is conceptually inappropriate and, hence, should be taken with caution in geotechnical design to avoid the risk of underestimating safety requirements. The study also reveals that varying particle gradation can impose a marked impact on liquefaction susceptibility of granular soils: Under the same post-consolidation state in terms of void ratio and confining pressure, a well-graded soil tends to be more susceptible to liquefaction than a uniformly graded soil. This variation of liquefaction susceptibility is shown to be consistent with the variation of location of the critical state locus in the compression space and is explainable by the critical state theory.
Persistent Identifierhttp://hdl.handle.net/10722/259176
ISSN
2019 Impact Factor: 4.35
2015 SCImago Journal Rankings: 1.818
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYang, J-
dc.contributor.authorLuo, X-
dc.date.accessioned2018-09-03T04:02:43Z-
dc.date.available2018-09-03T04:02:43Z-
dc.date.issued2018-
dc.identifier.citationActa Geotechnica, 2018, v. 13 n. 3, p. 535-547-
dc.identifier.issn1861-1125-
dc.identifier.urihttp://hdl.handle.net/10722/259176-
dc.description.abstractWhether the critical state friction angle of granular materials depends on grading is a fundamental question of both academic and practical interest. The present study attempts to address this question through a specifically designed experimental program where the influence of particle grading was carefully isolated from other influencing factors. The laboratory experiments show that under otherwise similar conditions, the angle of friction at critical state is a constant independent of grading, but, for a given grading, the angle of friction at critical state is highly dependent on particle shape. This finding suggests that the commonly adopted practice of separately allowing for the effect of particle shape and the effect of grading on critical state friction angle is conceptually inappropriate and, hence, should be taken with caution in geotechnical design to avoid the risk of underestimating safety requirements. The study also reveals that varying particle gradation can impose a marked impact on liquefaction susceptibility of granular soils: Under the same post-consolidation state in terms of void ratio and confining pressure, a well-graded soil tends to be more susceptible to liquefaction than a uniformly graded soil. This variation of liquefaction susceptibility is shown to be consistent with the variation of location of the critical state locus in the compression space and is explainable by the critical state theory.-
dc.languageeng-
dc.publisherSpringer Verlag.-
dc.relation.ispartofActa Geotechnica-
dc.rightsThe final publication is available at Springer via http://dx.doi.org/[insert DOI]-
dc.subjectAngle of friction-
dc.subjectCritical state-
dc.subjectGranular soils-
dc.subjectLiquefaction susceptibility-
dc.subjectParticle grading-
dc.titleThe critical state friction angle of granular materials: does it depend on grading?-
dc.typeArticle-
dc.identifier.emailYang, J: junyang@hkucc.hku.hk-
dc.identifier.authorityYang, J=rp00201-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s11440-017-0581-x-
dc.identifier.scopuseid_2-s2.0-85026811911-
dc.identifier.hkuros287833-
dc.identifier.volume13-
dc.identifier.issue3-
dc.identifier.spage535-
dc.identifier.epage547-
dc.identifier.isiWOS:000432332600003-
dc.publisher.placeGermany-
dc.identifier.issnl1861-1125-

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