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dc.contributor.authorDuca, S
dc.contributor.authorAlonso Pérez de Agreda, Eduardo
dc.contributor.authorScavia, Claudio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2015-12-23T19:13:23Z
dc.date.available2017-08-01T00:30:25Z
dc.date.issued2015-07
dc.identifier.citationDuca, S., Alonso, E., Scavia, C. A permafrost test on intact gneiss rock. "International journal of rock mechanics and mining sciences", Juliol 2015, vol. 77, p. 142-151.
dc.identifier.issn1365-1609
dc.identifier.urihttp://hdl.handle.net/2117/81089
dc.description.abstractChanges in permafrost conditions in high mountain rocks have increased the risk of dangerous instabilities. Ice segregation within the rock mass has been interpreted as one of the mechanisms involved in high mountain bedrock degradation. A long term laboratory test on a cube of intact gneiss has been designed to reproduce field temperature gradients and water supply conditions. Test results demonstrate that ice crystallization in a permafrost fringe (T=0 degrees C to -3 degrees C) leads to the formation of continuous ice-filled cracks which explain the loss of rock continuity and the observed rock failures. A coupled thermo-hydro-mechanical model which incorporates the thermodynamics of ice-water mixtures has been used to reproduce test results. The model, which follows existing formulations for unsaturated porous media, was capable of capturing the main observations derived from the experiment. Calculated tensile stresses are close to the gneiss tensile strength. The analysis performed is a step forward in understanding field observations and in the application of computational tools to real cases. (C) 2015 Elsevier Ltd. All rights reserved.
dc.format.extent10 p.
dc.language.isoeng
dc.publisherElsevier
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de roques
dc.subject.lcshGneiss
dc.subject.otherIce segregation
dc.subject.otherGneiss
dc.subject.otherLaboratory test
dc.subject.otherTHM modeling
dc.subject.otherFracturing
dc.subject.otherWave propagation
dc.subject.otherSLOPE STABILITY
dc.subject.otherSALINE MEDIA
dc.subject.otherFORMULATION
dc.subject.otherMECHANISMS
dc.subject.otherFRACTURE
dc.subject.otherREGIONS
dc.subject.otherFROZEN
dc.subject.otherCURVE
dc.subject.otherSOILS
dc.titleA permafrost test on intact gneiss rock
dc.typeArticle
dc.subject.lemacRoques metamòrfiques
dc.contributor.groupUniversitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
dc.identifier.doi10.1016/j.ijrmms.2015.02.003
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S1365160915000404
dc.rights.accessOpen Access
drac.iddocument16652662
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorDuca, S., Alonso, E., Scavia, C.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameInternational journal of rock mechanics and mining sciences
upcommons.citation.volume77
upcommons.citation.startingPage142
upcommons.citation.endingPage151


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