Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/32426
Title: Effects of subsurface cavity expansion in clays
Authors: Au, SKA
Yeung, AT
Soga, K
Cheng, YM 
Keywords: Numerical modelling
Clays
Shear strength
Grouting
Laboratory test
Issue Date: 2007
Publisher: ICE Publishing
Source: Geotechnique, 2007, v. 57, no. 10, p. 821-830 How to cite?
Journal: Geotechnique 
Abstract: Subsurface 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.
URI: http://hdl.handle.net/10397/32426
ISSN: 0016-8505
DOI: 10.1680/geot.2007.57.10.821
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

7
Last Week
2
Last month
Citations as of Sep 17, 2017

WEB OF SCIENCETM
Citations

5
Last Week
0
Last month
0
Citations as of Sep 24, 2017

Page view(s)

41
Last Week
1
Last month
Checked on Sep 25, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.