Ir al contenido (pulsa Retorno)

Universitat Politècnica de Catalunya

    • Català
    • Castellano
    • English
    • LoginRegisterLog in (no UPC users)
  • mailContact Us
  • world English 
    • Català
    • Castellano
    • English
  • userLogin   
      LoginRegisterLog in (no UPC users)

UPCommons. Global access to UPC knowledge

57.066 UPC E-Prints
You are here:
View Item 
  •   DSpace Home
  • E-prints
  • Grups de recerca
  • MSR - Mecànica del Sòls i de les Roques
  • Articles de revista
  • View Item
  •   DSpace Home
  • E-prints
  • Grups de recerca
  • MSR - Mecànica del Sòls i de les Roques
  • Articles de revista
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Small strain shear moduli of unsaturated natural and compacted loess

Thumbnail
View/Open
21140881.pdf (527,3Kb)
Share:
 
 
10.1680/jgeot.16.T.013
 
  View Usage Statistics
Cita com:
hdl:2117/107245

Show full item record
Ng, C. W. W.
Kaewsong, R.
Zhou, C.
Alonso Pérez de Agreda, EduardoMés informacióMés informacióMés informació
Document typeArticle
Defense date2017-07
PublisherThomas Telford
Rights accessOpen Access
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
Suction and microstructure play critical roles in the mechanical behaviour of loess, yet their effects on small strain (from 0·001 to 1%) shear moduli are not fully understood. In this study, shear moduli of loess with different microstructures and at different suctions are investigated and reported. Suction-controlled triaxial tests were carried out on two compacted and two intact loess specimens. Testing procedures include isotropic compression, wetting and shearing at constant mean net stress and constant suction. In addition, the soil microstructure was studied through scanning electron microscope images. At a given suction, the intact specimens have larger shear moduli than the compacted specimens at deviatoric strain below 0·025%, mainly because more clay aggregates accumulate at grain contacts in the intact loess. As suction decreases (i.e. wetting), contrary to the typical behaviour of compacted soils, the small strain shear moduli increase in the compacted loess. The increase is most probably because of significant wetting-induced contraction during the wetting process. In contrast, the shear moduli of the intact specimens remain unchanged, owing to slight swelling observed during wetting. The behaviour of the intact loess is likely to be dominated by the soil microstructure, and suction effects are relatively minor. With continued shearing, the differences resulting from the specific microstructures and wetting-induced volume changes (i.e. suction) diminished rapidly.
Description
Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees.
CitationNg, C., Kaewsong, R., Zhou, C., Alonso, E. Small strain shear moduli of unsaturated natural and compacted loess. "Géotechnique", Juliol 2017, vol. 67, núm. 7, p. 646-651. 
URIhttp://hdl.handle.net/2117/107245
DOI10.1680/jgeot.16.T.013
ISSN0016-8505
Publisher versionhttp://www.icevirtuallibrary.com/doi/10.1680/jgeot.16.T.013
Collections
  • MSR - Mecànica del Sòls i de les Roques - Articles de revista [277]
  • Departament d'Enginyeria Civil i Ambiental - Articles de revista [2.501]
Share:
 
  View Usage Statistics

Show full item record

FilesDescriptionSizeFormatView
21140881.pdf527,3KbPDFView/Open

Browse

This CollectionBy Issue DateAuthorsOther contributionsTitlesSubjectsThis repositoryCommunities & CollectionsBy Issue DateAuthorsOther contributionsTitlesSubjects

© UPC Obrir en finestra nova . Servei de Biblioteques, Publicacions i Arxius

info.biblioteques@upc.edu

  • About This Repository
  • Contact Us
  • Send Feedback
  • Inici de la pàgina