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dc.contributor.authorOldecop, Luciano A.
dc.contributor.authorAlonso Pérez de Agreda, Eduardo
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica
dc.date.accessioned2009-03-03T18:46:21Z
dc.date.available2009-03-03T18:46:21Z
dc.date.created2007
dc.date.issued2007
dc.identifier.citationOldecop, L.A.; Alonso, E.E. Theoretical investigation of the time-dependent behaviour of rockfill. Géotechnique, 2007, vol. 57, no. 3, pp. 289-301.
dc.identifier.urihttp://hdl.handle.net/2117/2620
dc.description.abstractLong-term strain records obtained in large-diameter oedometer tests on compacted gravels demonstrated that strains could be linearly related with the logarithm of time. Delayed compressibility coefficients were found proportional to the conventional stress-induced compressibility coefficients. A framework rooted on the phenomenon of crack propagation in rock particles induced by stress corrosion mechanisms is adopted to explain macroscopic observations. A model of crack propagation in loaded disc-shaped particles has been developed in order to explain the nature of particle breakage and its relationshipwith time, macroscopic stress and total suction.Experimental observations such as the existence of threshold stresses that mark the onset of delayed deformations are explained by the model. It was also foundthat the main features of the delayed deformation of rockfill could be physically explained within the developed framework. In particular, a simple closed-form relationship between the coefficient of delayed deformation, the compressibility coefficient and a parameter describing the rate of crack propagation could be found. It was found to be consistent with experimental observations.
dc.format.extent13 p.
dc.language.isoeng
dc.publisherInstitution of Civil Engineers (http://www.ice.org.uk/)
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
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.lcshRockfills
dc.subject.lcshRock mechanics
dc.subject.othercreep
dc.subject.othergravels
dc.subject.otherparticle crushing/crushability
dc.titleTheoretical investigation of the time-dependent behaviour of rockfill
dc.typeArticle
dc.subject.lemacMecànica de roques
dc.identifier.doi10.1680/geot.2007.57.3.289
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
local.personalitzacitaciotrue


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Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain