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
2011 Impact Factor: 1.461
2011 SCImago Journal Rankings: 0.056
DOIhttp://dx.doi.org/10.1680/geot.2007.57.10.821
ISI Accession Number IDWOS:000250966000004
ReferencesReferences in Scopus
DC Field
Value
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.epage830
dc.identifier.hkuros139199
dc.identifier.isiWOS:000250966000004
dc.identifier.issn0016-8505
2011 Impact Factor: 1.461
2011 SCImago Journal Rankings: 0.056
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
Author Affiliations
  1. The University of Hong Kong
  2. Hong Kong Polytechnic University
  3. University of Cambridge