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Assessment of the use of dynamic compaction on double porosity clay landfill
Eidgenossische Technische Hochschule Zurich.
Eidgenossische Technische Hochschule Zurich.ORCID-id: 0000-0003-1935-1743
Eidgenossische Technische Hochschule Zurich.
2009 (Engelska)Ingår i: Proceedings of the 17th International Conference on Soil Mechanics and Geotechnical Engineering: The Academia and Practice of Geotechnical Engineering, 2009, Vol. 3, s. 2252-2255Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Open cast coal mining in Northern Bohemia produces overburden waste of overconsolidated clay lumps that are placed in spoil heaps or used as backfill in exploited mines. This forms landfills with a double porosity structure consisting of voids between lumps (inter-granular) and voids within lumps (intra-granular). The total porosity can be up to 70 %, making the soil highly compressible even after self-weight consolidation. Soil behaviour is characterised by large absolute and differential settlements. Dynamic compaction is one of the ground improvement methods used before construction on these clay landfills. Model tests on scaled double porosity clay landfills were carried out in the ETH Zurich drum centrifuge. A period of self-weight consolidationwas followed by in-flight dynamic compaction. To assess and compare the strength of the clay fill, in-flight displacement-controlled rigid foundation tests were carried out on the centrifuge models. The total load on the foundation, and pressure distribution under it, were measured. © 2009 IOS Press.

Ort, förlag, år, upplaga, sidor
2009. Vol. 3, s. 2252-2255
Nyckelord [sv]
Centrifuge modelling, Dynamic compaction, Fills, Lumpy soils
Nationell ämneskategori
Geoteknik
Forskningsämne
Geoteknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-37106DOI: 10.3233/978-1-60750-031-5-2252Scopus ID: 2-s2.0-84865158732Lokalt ID: b004b2f7-8580-4155-8567-2af241a7ed1dISBN: 9781607500315 (tryckt)OAI: oai:DiVA.org:ltu-37106DiVA, id: diva2:1010604
Konferens
International Conference on Soil Mechanics and Geotechnical Engineering : 05/10/2009 - 09/10/2009
Tillgänglig från: 2016-10-03 Skapad: 2016-10-03 Senast uppdaterad: 2019-08-20Bibliografiskt granskad

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