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Localised strain in fissured clays : The combined effect of fissure orientation and confining pressure

Tudisco, Erika LU orcid ; Vitone, Claudia ; Mondello, Cristina ; Viggiani, Gioacchino ; Athanasopoulos, Stefanos LU ; Hall, Stephen A. LU and Cotecchia, Federica (2022) In Acta Geotechnica 17(5). p.1585-1603
Abstract

This paper reports the main results of an experimental study on the mechanics of intensely fissured natural clays, extending our previous studies on scaly clay from Santa Croce di Magliano. While previous work focused on the influence of the orientation of fissures with respect to the loading direction, the present investigation specifically explores an additional, important variable: the stress level. The combined effect of fissure orientation and confining pressure was studied by setting up a large campaign of plane strain compression experiments, in which different combinations of these two variables were tested. Conventional global stress–strain measurements were complemented by measuring displacement and strain fields through... (More)

This paper reports the main results of an experimental study on the mechanics of intensely fissured natural clays, extending our previous studies on scaly clay from Santa Croce di Magliano. While previous work focused on the influence of the orientation of fissures with respect to the loading direction, the present investigation specifically explores an additional, important variable: the stress level. The combined effect of fissure orientation and confining pressure was studied by setting up a large campaign of plane strain compression experiments, in which different combinations of these two variables were tested. Conventional global stress–strain measurements were complemented by measuring displacement and strain fields through two-dimensional digital image correlation. Such rich information provided a clear and consistent picture of the interplay between fissure orientation and stress level and revealed complex deformation patterns, which cannot be ignored for a proper interpretation of the material response.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Confining pressure, Digital image correlation (DIC), Fissure inclination, Fissured clay, Localised deformation, Plane strain
in
Acta Geotechnica
volume
17
issue
5
pages
1585 - 1603
publisher
Springer
external identifiers
  • scopus:85113398328
ISSN
1861-1125
DOI
10.1007/s11440-021-01329-z
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2021, The Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
id
99e7db31-416d-48d9-a156-775db5180f88
date added to LUP
2021-09-08 14:01:39
date last changed
2022-11-08 03:59:33
@article{99e7db31-416d-48d9-a156-775db5180f88,
  abstract     = {{<p>This paper reports the main results of an experimental study on the mechanics of intensely fissured natural clays, extending our previous studies on scaly clay from Santa Croce di Magliano. While previous work focused on the influence of the orientation of fissures with respect to the loading direction, the present investigation specifically explores an additional, important variable: the stress level. The combined effect of fissure orientation and confining pressure was studied by setting up a large campaign of plane strain compression experiments, in which different combinations of these two variables were tested. Conventional global stress–strain measurements were complemented by measuring displacement and strain fields through two-dimensional digital image correlation. Such rich information provided a clear and consistent picture of the interplay between fissure orientation and stress level and revealed complex deformation patterns, which cannot be ignored for a proper interpretation of the material response.</p>}},
  author       = {{Tudisco, Erika and Vitone, Claudia and Mondello, Cristina and Viggiani, Gioacchino and Athanasopoulos, Stefanos and Hall, Stephen A. and Cotecchia, Federica}},
  issn         = {{1861-1125}},
  keywords     = {{Confining pressure; Digital image correlation (DIC); Fissure inclination; Fissured clay; Localised deformation; Plane strain}},
  language     = {{eng}},
  number       = {{5}},
  pages        = {{1585--1603}},
  publisher    = {{Springer}},
  series       = {{Acta Geotechnica}},
  title        = {{Localised strain in fissured clays : The combined effect of fissure orientation and confining pressure}},
  url          = {{http://dx.doi.org/10.1007/s11440-021-01329-z}},
  doi          = {{10.1007/s11440-021-01329-z}},
  volume       = {{17}},
  year         = {{2022}},
}