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Article: Effects of subsurface cavity expansion in clays
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TitleEffects of subsurface cavity expansion in clays
 
AuthorsAu, SKA1
Yeung, AT1
Soga, K3
Cheng, YM2
 
KeywordsClays
Grouting
Laboratory tests
Numerical modelling
Shear strength
 
Issue Date2007
 
PublisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.geotechnique-ice.com
 
CitationGeotechnique, 2007, v. 57 n. 10, p. 821-830 [How to Cite?]
DOI: http://dx.doi.org/10.1680/geot.2007.57.10.821
 
AbstractSubsurface cavity expansion in clay induced by compaction grouting can generate upward displacement of clay and/or increase in effective stress leading to consolidation, resulting in settlement compensation and/or shear strength enhancement respectively. However, the two potential benefits of subsurface cavity expansion may offset each other. Experiments and numerical simulations on the engineering behaviour of E-grade kaolin induced by subsurface pressure-controlled cavity expansion were conducted to investigate the interrelationship between compensation effectiveness and shear strength enhancement. The results of numerical simulations are in reasonably good agreement with the experimental data, indicating that the numerical simulation procedure adopted is a plausible and reliable technique to describe the engineering behaviour of clays induced by pressure-controlled cavity expansion. Effects of cavity expansion rate, cavity expansion volume, injection point spacing, and stress history on compensation effectiveness and shear strength enhancement were studied. Practical applications of the results are also proposed.
 
ISSN0016-8505
2012 Impact Factor: 1.481
2012 SCImago Journal Rankings: 2.158
 
DOIhttp://dx.doi.org/10.1680/geot.2007.57.10.821
 
ISI Accession Number IDWOS:000250966000004
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorAu, SKA
 
dc.contributor.authorYeung, AT
 
dc.contributor.authorSoga, K
 
dc.contributor.authorCheng, YM
 
dc.date.accessioned2010-09-06T06:34:51Z
 
dc.date.available2010-09-06T06:34:51Z
 
dc.date.issued2007
 
dc.description.abstractSubsurface cavity expansion in clay induced by compaction grouting can generate upward displacement of clay and/or increase in effective stress leading to consolidation, resulting in settlement compensation and/or shear strength enhancement respectively. However, the two potential benefits of subsurface cavity expansion may offset each other. Experiments and numerical simulations on the engineering behaviour of E-grade kaolin induced by subsurface pressure-controlled cavity expansion were conducted to investigate the interrelationship between compensation effectiveness and shear strength enhancement. The results of numerical simulations are in reasonably good agreement with the experimental data, indicating that the numerical simulation procedure adopted is a plausible and reliable technique to describe the engineering behaviour of clays induced by pressure-controlled cavity expansion. Effects of cavity expansion rate, cavity expansion volume, injection point spacing, and stress history on compensation effectiveness and shear strength enhancement were studied. Practical applications of the results are also proposed.
 
dc.description.naturepublished_or_final_version
 
dc.identifier.citationGeotechnique, 2007, v. 57 n. 10, p. 821-830 [How to Cite?]
DOI: http://dx.doi.org/10.1680/geot.2007.57.10.821
 
dc.identifier.doihttp://dx.doi.org/10.1680/geot.2007.57.10.821
 
dc.identifier.eissn1751-7656
 
dc.identifier.epage830
 
dc.identifier.hkuros139199
 
dc.identifier.isiWOS:000250966000004
 
dc.identifier.issn0016-8505
2012 Impact Factor: 1.481
2012 SCImago Journal Rankings: 2.158
 
dc.identifier.issue10
 
dc.identifier.openurl
 
dc.identifier.scopuseid_2-s2.0-36849014231
 
dc.identifier.spage821
 
dc.identifier.urihttp://hdl.handle.net/10722/71752
 
dc.identifier.volume57
 
dc.languageeng
 
dc.publisherThomas Telford (ICE Publishing). The Journal's web site is located at http://www.geotechnique-ice.com
 
dc.publisher.placeUnited Kingdom
 
dc.relation.ispartofGeotechnique
 
dc.relation.referencesReferences in Scopus
 
dc.rightsGeotechnique. Copyright © Thomas Telford Ltd.
 
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License
 
dc.rightsPermission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees
 
dc.subjectClays
 
dc.subjectGrouting
 
dc.subjectLaboratory tests
 
dc.subjectNumerical modelling
 
dc.subjectShear strength
 
dc.titleEffects of subsurface cavity expansion in clays
 
dc.typeArticle
 
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Author Affiliations
  1. The University of Hong Kong
  2. Hong Kong Polytechnic University
  3. University of Cambridge