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Testing of TBM excavation material in sandstone and marl for reuse in embankments or as fill
ETH, Zürich.
Institute for Geotechnical Engineering, Eidgenossische Technische Hochschule Zurich.
ETH, Zürich.ORCID iD: 0000-0003-1935-1743
ETH, Zürich.
2001 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Several tunnels in geological formations of molasse, marl or sandstone are planned or are presently under construction in Switzerland. The excavation of these tunnels is very often carried out by tunnel boring machines (TBM). This kind of excavation tends to produce lamellar excavation materials (chips). For the reuse of these materials in road embankments etc., there are certain disadvantages concerning the compression properties. Limiting deformation will be the main restriction on design in the reuse of this material and this is manifested also in terms of the possible changes of volume as a function of time. On the one hand, volume may increase due to instability in relation to water and possibly frost, whereby swelling occurs. On the other hand, volume may decrease due to repeated dynamic loading. Inevitably these volume changes will not occur to the same degree and within the same timeframe. The material can be stabilised by using a variety of cementing agents to improve the key properties. A range of laboratory experiments were performed to find the optimal mixture to be used as a base to the reinforced concrete slabs, which formed the railbed to the major railway line passing through this tunnel. An experimental field test was carried out using this specific mixture to confirm the suitability in relation to the construction method proposed and the properties measured at full scale.

Place, publisher, year, edition, pages
Leiden: Balkema, 2001. 2049-2052 p.
National Category
Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-65472ISI: 000178609100452ISBN: 90-2651-853-6 (print)OAI: oai:DiVA.org:ltu-65472DiVA: diva2:1138175
Conference
15th International Conference on Soil Mechanics and Geotechnical Engineering, Istanbul, Turkey, Aug 27-31, 2001
Available from: 2017-09-04 Created: 2017-09-04 Last updated: 2017-11-24Bibliographically approved

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CiteExportLink to record
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  • apa
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  • ieee
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  • vancouver
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  • de-DE
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  • Other locale
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Output format
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