Conference Paper: Soil improvement using compaction grouting - A laboratory investigation on the confining pressure and injection rate in completely decomposed granite

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TitleSoil improvement using compaction grouting - A laboratory investigation on the confining pressure and injection rate in completely decomposed granite
AuthorsWang, SY2
Chan, D3
Lam, KC2
Au, SK1
Tham, LG1
Issue Date2007
CitationProceedings Of The 4Th International Conference On Soft Soil Engineering - Soft Soil Engineering, 2007, p. 697-702 [How to Cite?]
AbstractLaboratory compact grouting was performed using a modified triaxial test on Hong Kong CDG (completely decomposed granite) soils to investigate the effect of effective confining pressure and grout injection rate on the compact grouting effect. In this study, compaction grouting was simulated by expanding a latex balloon inside a triaxial sample using de-aired water. When the balloon is expanded, it first needs to overcome the effect of the confining pressure of the soil; further expansion will compact and density the surrounding soil. The compact grouting effect can be control by measuring the total void ratio change during injection and the following consolidation. The injection rate was controlled by a GDS using a volume control technique. The results of the experiments showed that the effective confining pressure on soil specimen plays an important role in the effect of compaction grouting, and the injection rate has an effect on the rate of excess pore pressure dissipation but minor effect on soil density. © 2007 Taylor & Francis Group.
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorWang, SY
dc.contributor.authorChan, D
dc.contributor.authorLam, KC
dc.contributor.authorAu, SK
dc.contributor.authorTham, LG
dc.date.accessioned2010-09-26T02:46:29Z
dc.date.available2010-09-26T02:46:29Z
dc.date.issued2007
dc.description.abstractLaboratory compact grouting was performed using a modified triaxial test on Hong Kong CDG (completely decomposed granite) soils to investigate the effect of effective confining pressure and grout injection rate on the compact grouting effect. In this study, compaction grouting was simulated by expanding a latex balloon inside a triaxial sample using de-aired water. When the balloon is expanded, it first needs to overcome the effect of the confining pressure of the soil; further expansion will compact and density the surrounding soil. The compact grouting effect can be control by measuring the total void ratio change during injection and the following consolidation. The injection rate was controlled by a GDS using a volume control technique. The results of the experiments showed that the effective confining pressure on soil specimen plays an important role in the effect of compaction grouting, and the injection rate has an effect on the rate of excess pore pressure dissipation but minor effect on soil density. © 2007 Taylor & Francis Group.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationProceedings Of The 4Th International Conference On Soft Soil Engineering - Soft Soil Engineering, 2007, p. 697-702 [How to Cite?]
dc.identifier.epage702
dc.identifier.hkuros125833
dc.identifier.scopuseid_2-s2.0-55549138752
dc.identifier.spage697
dc.identifier.urihttp://hdl.handle.net/10722/111378
dc.languageeng
dc.relation.ispartofProceedings of the 4th International Conference on Soft Soil Engineering - Soft Soil Engineering
dc.relation.referencesReferences in Scopus
dc.titleSoil improvement using compaction grouting - A laboratory investigation on the confining pressure and injection rate in completely decomposed granite
dc.typeConference_Paper
Author Affiliations
  1. The University of Hong Kong
  2. City University of Hong Kong
  3. University of Alberta