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Comparison of ground improvement on double porosity soil: A centrifuge study of pore pressure response
Institute for Geotechnical Engineering, ETH Zurich.
Institute for Geotechnical Engineering, ETH Zurich.
Institute for Geotechnical Engineering, ETH Zurich.ORCID iD: 0000-0003-1935-1743
2014 (English)In: Physical Modelling in Geotechnics: proceedings of the 8th International Conference on Physical Modelling in Geotechnics 2014 (ICPMG 2014), Perth, Australia, 14-17 January 2014 / [ed] Christophe Gaudin, Leiden: CRC Press/Balkema , 2014, Vol. 2, p. 1137-1143Conference paper, Published paper (Refereed)
Abstract [en]

The ETH geotechnical drum centrifuge was used to model various ground improvement techniques on double porosity clay. Embankments, sand compaction piles, and dynamic compaction were applied to similar soil models in a series of tests. Ground improvement was carried out in-flight. The pore pressure response to different ground improvement regimes was used to compare effectiveness and suggest likely mechanisms. An optimal ground improvement technique for double porosity soil is concluded to be the use of Sand Compaction Piles (SCPs) since they decrease the intergranular porosity locally, but maintain a relatively high permeability to facilitate the further consolidation of areas of the clay where the double porosity structure is still problematic. Questions about the validity of centrifuge modelling these ground improvement methods are also discussed. © 2014 Taylor & Francis Group.

Place, publisher, year, edition, pages
Leiden: CRC Press/Balkema , 2014. Vol. 2, p. 1137-1143
National Category
Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-28067Scopus ID: 2-s2.0-84890033423Local ID: 1b878bcb-f1c9-48c0-822b-db301c8046f5ISBN: 9781138022225 (print)OAI: oai:DiVA.org:ltu-28067DiVA, id: diva2:1001261
Conference
International Conference on Physical Modelling in Geotechnics, ICPMG 2014 : 14/01/2014 - 17/01/2014
Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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