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dc.contributor.authorPineda Jiménez, Jubert Andrés
dc.contributor.authorRomero Morales, Enrique Edgar
dc.contributor.authorAlonso Pérez de Agreda, Eduardo
dc.contributor.authorPérez Revilla, Tomás
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica
dc.identifier.citationPineda, J.A. [et al.]. A new high-pressure triaxial apparatus for inducing and tracking hydro-mechanical degradation of clayey rocks. "Geotechnical Testing journal", Novembre 2014, vol. 37, núm. 6, p. 1-15.
dc.description.abstractThis paper presents the development of a new high-pressure triaxial apparatus specifically prepared for inducing and tracking the degradation of clayey rocks. Total suction—used to induce the hydraulic degradation—is applied with vapor transfer technique by controlling the relative humidity of air in contact with the material. The evolution of the degradation process along different hydro-mechanical stress paths is continuously tracked with bender elements, as well as with air or water permeability measurements on partially saturated or saturated states, respectively. Relevant test results on a low porosity clayey rock (Lilla claystone, Spain) are presented to evaluate the main capabilities of the new equipment. The results bring up the high sensitivity to water of the material, which is evidenced by the important reduction of shear wave velocity induced on first wetting and drying at low confining stress, as well as by the significant increase in the air permeability of the degraded material (around four orders of magnitude larger than the intact material). Test results also showed clear differences in the volume change and shear strength behavior of undisturbed, saturated, and degraded samples, highlighting the relevance of degradation on macroscopic behavioral features.
dc.format.extent15 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Geotècnia::Mecànica de roques
dc.subject.lcshClay soils
dc.subject.othertriaxial test
dc.subject.otherrock degradation
dc.subject.otherrelative humidity
dc.subject.otherwetting-drying cycles
dc.titleA new high-pressure triaxial apparatus for inducing and tracking hydro-mechanical degradation of clayey rocks
dc.subject.lemacSòls argilosos
dc.contributor.groupUniversitat Politècnica de Catalunya. MSR - Mecànica del Sòls i de les Roques
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
upcommons.citation.authorPineda, J.A.; Romero, E.; Alonso, E.; Perez, T.
upcommons.citation.publicationNameGeotechnical Testing journal
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