Article: Constitutive behavior of binary mixtures of kaolin and glass beads in direct shear

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Publisher Website: 10.1007/s12205-012-1613-6
Scopus: eid_2-s2.0-84868324112

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Title	Constitutive behavior of binary mixtures of kaolin and glass beads in direct shear
Authors	Li, Y1 Aydin, A4 Xu, Q2 Chen, J3
Keywords	Soil mixture Compressibility Water content Shear zone structure Residual shear strength
Issue Date	2012
Publisher	Springer.
Citation	KSCE 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
Abstract	Composite 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.
ISSN	1226-7988 2011 Impact Factor: 0.377 2011 SCImago Journal Rankings: 0.032
DOI	http://dx.doi.org/10.1007/s12205-012-1613-6

DC Field	Value
dc.contributor.author	Li, Y
dc.contributor.author	Aydin, A
dc.contributor.author	Xu, Q
dc.contributor.author	Chen, J
dc.date.accessioned	2012-11-06T08:06:43Z
dc.date.available	2012-11-06T08:06:43Z
dc.date.issued	2012
dc.description.abstract	Composite 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.nature	link_to_subscribed_fulltext
dc.identifier.citation	KSCE 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.doi	http://dx.doi.org/10.1007/s12205-012-1613-6
dc.identifier.epage	1159
dc.identifier.issn	1226-7988 2011 Impact Factor: 0.377 2011 SCImago Journal Rankings: 0.032
dc.identifier.issue	7
dc.identifier.scopus	eid_2-s2.0-84868324112
dc.identifier.spage	1152
dc.identifier.uri	http://hdl.handle.net/10722/173982
dc.identifier.volume	16
dc.language	eng
dc.publisher	Springer.
dc.publisher.place	Germany
dc.relation.ispartof	KSCE Journal of Civil Engineering
dc.rights	The original publication is available at www.springerlink.com
dc.subject	Soil mixture
dc.subject	Compressibility
dc.subject	Water content
dc.subject	Shear zone structure
dc.subject	Residual shear strength
dc.title	Constitutive behavior of binary mixtures of kaolin and glass beads in direct shear
dc.type	Article

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Author Affiliations

The University of Hong Kong
Chengdu University of Technology
Guizhou University
University of Mississippi

Article: Constitutive behavior of binary mixtures of kaolin and glass beads in direct shear

The HKU Scholars Hub has contact details for these author(s).