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dc.contributor.authorAlonso Pérez de Agreda, Eduardo
dc.contributor.authorRomero Morales, Enrique Edgar
dc.contributor.authorHoffmann Jauge, Christian
dc.contributor.authorGarcía-Escudero, E
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica
dc.date.accessioned2013-01-10T19:03:06Z
dc.date.created2005-11
dc.date.issued2005-11
dc.identifier.citationAlonso, E. [et al.]. Expansive bentonite-sand mixtures in ciclyc controlled-suction drying and wetting. "Engineering geology", Novembre 2005, vol. 81, núm. 3, p. 213-226.
dc.identifier.issn0013-7952
dc.identifier.urihttp://hdl.handle.net/2117/17269
dc.description.abstractExpansive clay buffers in radioactive waste disposal designs experience cyclic drying and wetting paths during different stages of their design life. Clayey soils subjected to these processes develop swelling and shrinkage deformations, which give rise to the accumulation of compression or expansion strains during suction cycles. Experimental studies were undertaken using oedometer tests on an artificially prepared bentonite–sand mixture (80% bentonite by dry mass). In order to study these processes and to identify the most important features controlling soil behaviour, several wetting–drying cycles with suctions ranging between 130 and 4 MPa were applied using vapour equilibrium technique and covering a wide range of overconsolidation ratios (OCR). The tested samples showed cumulative shrinkage strains along the successive cycles, which became more significant at increasing vertical net stresses (low OCR values). However, no accumulation of expansion strains was detected at elevated OCR values. Test results were interpreted and predicted within the context of an elastoplastic model proposed by Alonso et al., 1999, [Alonso, E.E., Vaunat, J., Gens, A., (1999). Modelling the mechanical behaviour of expansive clays. Engineering Geology, 54, 173–183.] which takes into account the accumulation of strains. A good correspondence between measured soil response and model predictions was observed. The paper also presents the methodology to derive the constitutive parameters.
dc.format.extent14 p.
dc.language.isoeng
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
dc.subject.lcshSwelling soils
dc.subject.otherSwelling
dc.subject.otherShrinkage
dc.subject.otherSuction
dc.subject.otherExpansive clay
dc.subject.otherModel
dc.titleExpansive bentonite-sand mixtures in ciclyc controlled-suction drying and wetting
dc.typeArticle
dc.subject.lemacArgila -- Propietats mecàniques
dc.contributor.groupUniversitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
dc.identifier.doi10.1016/j.enggeo.2005.06.009
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0013795205001262
dc.rights.accessRestricted access - publisher's policy
local.identifier.drac637811
dc.description.versionPostprint (published version)
dc.date.lift10000-01-01
local.citation.authorAlonso, E.; Romero, E.; Hoffmann, C.; García-Escudero, E.
local.citation.publicationNameEngineering geology
local.citation.volume81
local.citation.number3
local.citation.startingPage213
local.citation.endingPage226


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