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Article: Effects of particle shape on shear strength of clay-gravel mixture

TitleEffects of particle shape on shear strength of clay-gravel mixture
Authors
KeywordsClay-gravel mixture
Particle shape
Shear strength
Issue Date2012
PublisherSpringer.
Citation
KSCE Journal of Civil Engineering, 2012 How to Cite?
AbstractSoils containing gravel-sized particles attract much less attention from researchers than clay and sand, though they may be the most commonly encountered materials in geotechnical engineering practice, especially in mountainous area. Large direct shear tests are carried out in this study to investigate the shear behavior of such soil mixtures, with emphasis on influences of shape properties (symmetry and smoothness) of gravel particles. The tested samples are prepared by mixing kaolin and gravel-sized particles (2.0 mm
Persistent Identifierhttp://hdl.handle.net/10722/173983
ISSN
2014 Impact Factor: 0.484
2014 SCImago Journal Rankings: 0.328

 

DC FieldValueLanguage
dc.contributor.authorLi, Y-
dc.contributor.authorHuang, R-
dc.contributor.authorChan, LS-
dc.contributor.authorChen, J-
dc.date.accessioned2012-11-06T08:14:53Z-
dc.date.available2012-11-06T08:14:53Z-
dc.date.issued2012-
dc.identifier.citationKSCE Journal of Civil Engineering, 2012-
dc.identifier.issn1226-7988-
dc.identifier.urihttp://hdl.handle.net/10722/173983-
dc.description.abstractSoils containing gravel-sized particles attract much less attention from researchers than clay and sand, though they may be the most commonly encountered materials in geotechnical engineering practice, especially in mountainous area. Large direct shear tests are carried out in this study to investigate the shear behavior of such soil mixtures, with emphasis on influences of shape properties (symmetry and smoothness) of gravel particles. The tested samples are prepared by mixing kaolin and gravel-sized particles (2.0 mm<d<15 mm) of different shape at various volumetric proportions (40, 70 and 100%). Three types of gravel are used, i.e., glass beads, river cobbles and crushed granite fragments. The applied normal stresses is 150 kPa and the shearing rate is 0.006 mm/min. Results are presented in terms of shear dilatancy, and peak and constant volume friction angle. Based on the analysis of the test results, it is found: (1) increasing gravel content increases both peak and constant volume friction angle; (2) both particle symmetry (quantified by elongation) and surface smoothness (quantified by convexity) play an important role in peak and constant volume friction, though they work in different ways; (3) increasing convexity decreases constant volume friction angle, while increases peak friction angle; and (4) increasing elongation increases constant volume friction angle, but decreases peak friction angle.-
dc.languageeng-
dc.publisherSpringer.-
dc.relation.ispartofKSCE Journal of Civil Engineering-
dc.rightsThe original publication is available at www.springerlink.com-
dc.subjectClay-gravel mixture-
dc.subjectParticle shape-
dc.subjectShear strength-
dc.titleEffects of particle shape on shear strength of clay-gravel mixtureen_US
dc.typeArticleen_US
dc.identifier.emailLi, Y: li.dennis@hotmail.com-
dc.identifier.emailChan, LS: chanls@hku.hk-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1007/s12205-012-1613-8-
dc.publisher.placeGermany-

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