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Radial stress paths in triaxial tests on compacted Boom clay: stiffness and anisotropy

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Della Vecchia, G.
Jommi, Cristina
Romero Morales, Enrique EdgarMés informacióMés informacióMés informació
Document typeConference report
Defense date2011
PublisherKasetsart University
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
Experimental results of triaxial tests performed on unsaturated soil samples of statically compacted Boom clay are presented. Boom clay samples we re subjected to radial stress paths at two different constant water contents: w= 15%, the as-compacted one, and w= 18%, achieved by vapour transfer technique from the as-compacted condition. The dependence of volumetric compliance on the stress ratio and on the water content is evidenced. The results of the experimental investigation are interpreted in terms of anisotropy of the mechanical response, as a consequence of the induced anisotropy during static compaction, and in terms of the dependence of the compressibility on the micro-fabric of the material. The intrinsic link between the phenomenological soil behaviour and the evolution of its fabric is evidenced, and a normalising variable to take it into account at the constitutive level is proposed.
CitationDella Vecchia, G.; Jommi, C.; Romero, E. Radial stress paths in triaxial tests on compacted Boom clay: stiffness and anisotropy. A: Asia-Pacific Conference on Unsaturated Soils. "Unsaturated soils: theory and practice 2011". Pattaya: Kasetsart University, 2011, p. 273-278. 
URIhttp://hdl.handle.net/2117/18878
ISBN978-616-7522-77-7
Publisher versionhttp://www.unsat.eng.ku.ac.th/Proceeding/Papers/028.pdf
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  • Departament d'Enginyeria del Terreny, Cartogràfica i Geofísica (fins octubre 2015) - Ponències/Comunicacions de congressos [429]
  • MSR - Mecànica del Sòls i de les Roques - Ponències/Comunicacions de congressos [363]
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