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Investigation of the spatial distribution of installation effects around stone columns with an electrical needle
Institute for Geotechnical Engineering, ETH Zürich.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering. Institute for Geotechnical Engineering, ETH Zürich.ORCID iD: 0000-0003-1935-1743
Institute for Geotechnical Engineering, ETH Zürich.
Number of Authors: 32014 (English)In: Physical Modelling in Geotechnics - Proceedings of the 8th International Conference on Physical Modelling in Geotechnics 2014, ICPMG 2014, 2014, Vol. 1, p. 289-294Conference paper, Published paper (Refereed)
Abstract [en]

Stone columns provide valuable ground improvement in soft soils in numerous projects around the world. They increase the stiffness of the subsoil and reduce time needed for consolidation. This last aspect is due to the fact that the main drainage direction switches from being vertical to being radial, significantly reducing the length of the drainage path. However, driving the installation mandrel into the ground causes changes in the structure of the subsoil, usually referred to as smear zones, which decrease the drainage performance of granular inclusions. The implementation of a needle to measure the impedance (electrical resistivity) in-flight in the geotechnical centrifuge at ETH Zürich enables an insight to be made into the pore size distribution with depth close to a stone column constructed in-flight. © 2010 Taylor & Francis Group, London.

Place, publisher, year, edition, pages
2014. Vol. 1, p. 289-294
National Category
Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-35486Scopus ID: 2-s2.0-84890088455Local ID: a0857d0d-b0d2-4458-a18f-998135e2523eISBN: 9781138022218 (print)OAI: oai:DiVA.org:ltu-35486DiVA, id: diva2:1008739
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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Laue, Jan

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