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dc.contributor.authorMerchán, V
dc.contributor.authorVaunat, Jean
dc.contributor.authorRomero Morales, Enrique Edgar
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica
dc.identifier.citationMerchán, V.; Vaunat, J.; Romero, E. Drying induced effects on the residual strength of remoulded clays. A: International Workshop on Unsaturated Soils. "3rd International Workshop on Unsaturated Soils". Trento: Taylor & Francis, 2009, p. 1-10.
dc.description.abstractExperimental tests on residual shear strength of clays using “high suction control system” have shown that the friction angle significantly increases at high suction, and that such an increase is more significant as the plasticity index increases (Vaunat J. et al. 2006; Meca 2007; Vaunat J. et al. 2007). These results are not in agreement with the classical results on saturated soils where the residual friction angle reduces as plasticity index increases (Bishop 1971; Lupini J.F. et al. 1981; Skempton 1985). This paper intends to explain these results by taking into consideration the microstructure of the tested materials. In particular, direct observations after tests with Environmental Scanning Electron Micrographs (ESEM) and Microstructure Intrusion Porosimetry (MIP) techniques were used. The analysis shows that samples undergo microstructural changes due to drying: micro-cracking, stiffening and developing of aggregate arrangements and changes in microporosity are the main observed features. These microstructural changes seem to develop a stiffer material which indeed behaves in a “granular” way in terms of strength.
dc.format.extent10 p.
dc.publisherTaylor & Francis
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de sòls
dc.subject.lcshRemoulded clay
dc.titleDrying induced effects on the residual strength of remoulded clays
dc.typeConference report
dc.subject.lemacArgila -- Assaigs de materials
dc.contributor.groupUniversitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author’s final draft)
local.citation.authorMerchán, V.; Vaunat, J.; Romero, E.
local.citation.contributorInternational Workshop on Unsaturated Soils
local.citation.publicationName3rd International Workshop on Unsaturated Soils

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