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Article: Constitutive behavior of binary mixtures of kaolin and glass beads in direct shear
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TitleConstitutive behavior of binary mixtures of kaolin and glass beads in direct shear
 
AuthorsLi, Y1
Aydin, A4
Xu, Q3
Chen, J2
 
KeywordsSoil mixture
Compressibility
Water content
Shear zone structure
Residual shear strength
 
Issue Date2012
 
PublisherSpringer.
 
CitationKSCE Journal of Civil Engineering, 2012, v. 16 n. 7, p. 1152-1159 [How to Cite?]
DOI: http://dx.doi.org/10.1007/s12205-012-1613-6
 
AbstractComposite soils having a wide range of particle size may be the most commonly encountered materials in geotechnical engineering practice. This study involves 21 direct shear tests to investigate the constitutive behavior of composite soils within the normal stress range from 50 to 200 kPa. The samples are mixtures of fine (kaolin) and coarse (glass beads) fractions at various proportions. The properties of the samples considered in the investigation are particle size distribution, water content of sheared specimens, structural features of shear surface and residual shear strength. It is shown that the particle size distribution influences the void ratio produced with the same compaction effort. Increasing fine fraction from zero to a threshold value (approximately 20–30%) causes a decrease in void ratio of the mixture. Beyond this threshold, a further increase of fine fraction causes an increase in void ratio. High proportion of fine fraction causes: (1) lower water content of shear zones relative to outer zones, (2) densification process within shear zone, (3) well slickensided shear surfaces, and (4) shearing in sliding mode and hence low residual shear strength.
 
ISSN1226-7988
2013 Impact Factor: 0.511
 
DOIhttp://dx.doi.org/10.1007/s12205-012-1613-6
 
DC FieldValue
dc.contributor.authorLi, Y
 
dc.contributor.authorAydin, A
 
dc.contributor.authorXu, Q
 
dc.contributor.authorChen, J
 
dc.date.accessioned2012-11-06T08:06:43Z
 
dc.date.available2012-11-06T08:06:43Z
 
dc.date.issued2012
 
dc.description.abstractComposite soils having a wide range of particle size may be the most commonly encountered materials in geotechnical engineering practice. This study involves 21 direct shear tests to investigate the constitutive behavior of composite soils within the normal stress range from 50 to 200 kPa. The samples are mixtures of fine (kaolin) and coarse (glass beads) fractions at various proportions. The properties of the samples considered in the investigation are particle size distribution, water content of sheared specimens, structural features of shear surface and residual shear strength. It is shown that the particle size distribution influences the void ratio produced with the same compaction effort. Increasing fine fraction from zero to a threshold value (approximately 20–30%) causes a decrease in void ratio of the mixture. Beyond this threshold, a further increase of fine fraction causes an increase in void ratio. High proportion of fine fraction causes: (1) lower water content of shear zones relative to outer zones, (2) densification process within shear zone, (3) well slickensided shear surfaces, and (4) shearing in sliding mode and hence low residual shear strength.
 
dc.description.naturelink_to_subscribed_fulltext
 
dc.identifier.citationKSCE Journal of Civil Engineering, 2012, v. 16 n. 7, p. 1152-1159 [How to Cite?]
DOI: http://dx.doi.org/10.1007/s12205-012-1613-6
 
dc.identifier.doihttp://dx.doi.org/10.1007/s12205-012-1613-6
 
dc.identifier.epage1159
 
dc.identifier.issn1226-7988
2013 Impact Factor: 0.511
 
dc.identifier.issue7
 
dc.identifier.scopuseid_2-s2.0-84868324112
 
dc.identifier.spage1152
 
dc.identifier.urihttp://hdl.handle.net/10722/173982
 
dc.identifier.volume16
 
dc.languageeng
 
dc.publisherSpringer.
 
dc.publisher.placeGermany
 
dc.relation.ispartofKSCE Journal of Civil Engineering
 
dc.rightsThe original publication is available at www.springerlink.com
 
dc.subjectSoil mixture
 
dc.subjectCompressibility
 
dc.subjectWater content
 
dc.subjectShear zone structure
 
dc.subjectResidual shear strength
 
dc.titleConstitutive behavior of binary mixtures of kaolin and glass beads in direct shear
 
dc.typeArticle
 
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<contributor.author>Aydin, A</contributor.author>
<contributor.author>Xu, Q</contributor.author>
<contributor.author>Chen, J</contributor.author>
<date.accessioned>2012-11-06T08:06:43Z</date.accessioned>
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Author Affiliations
  1. The University of Hong Kong
  2. Guizhou University
  3. Chengdu University of Technology
  4. University of Mississippi