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Monitoring of the nano-structure response of natural clay under mechanical perturbation using small angle X-ray scattering and digital image correlation

Birmpilis, Georgios ; Hall, Stephen A. LU ; Lages, Sebastian LU and Dijkstra, Jelke (2019) In Acta Geotechnica 14(6). p.1965-1975
Abstract

This paper introduces a new experimental method to monitor the evolving intra-particle, nanometre-scale response during hydro-mechanical tests on undisturbed wet clay samples using small angle X-ray scattering (SAXS). The method uses a newly developed miniature plane-strain one-dimensional compression cell that facilitates simultaneous full-field surface displacement measurements using digital image correlation and SAXS measurements. The 60–120 s acquisition times offered by SAXS at synchrotron facilities are beneficial to study time-dependent mechanisms in clays. The experimental results presented indicate that, for the natural sensitive clay tested in this work, no significant structural changes occur at the intra-particle scale... (More)

This paper introduces a new experimental method to monitor the evolving intra-particle, nanometre-scale response during hydro-mechanical tests on undisturbed wet clay samples using small angle X-ray scattering (SAXS). The method uses a newly developed miniature plane-strain one-dimensional compression cell that facilitates simultaneous full-field surface displacement measurements using digital image correlation and SAXS measurements. The 60–120 s acquisition times offered by SAXS at synchrotron facilities are beneficial to study time-dependent mechanisms in clays. The experimental results presented indicate that, for the natural sensitive clay tested in this work, no significant structural changes occur at the intra-particle scale during loading, even when large strains are measured at the macro-scale. In addition, changes that are observed at this scale occur after the end of perturbation, i.e. the creation of new intra-particle structures. Further information is obtained on the orientation evolution of the fabric by the comparative analysis of the individual mineral component response.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Clay, DIC, Directional anisotropy, Nanoscale, Real-time, SAXS
in
Acta Geotechnica
volume
14
issue
6
pages
11 pages
publisher
Springer
external identifiers
  • scopus:85068111588
ISSN
1861-1125
DOI
10.1007/s11440-019-00832-8
language
English
LU publication?
yes
id
93f5660c-afc1-4059-a362-e76653c254b8
date added to LUP
2019-07-11 09:04:26
date last changed
2020-02-19 05:36:22
@article{93f5660c-afc1-4059-a362-e76653c254b8,
  abstract     = {<p>This paper introduces a new experimental method to monitor the evolving intra-particle, nanometre-scale response during hydro-mechanical tests on undisturbed wet clay samples using small angle X-ray scattering (SAXS). The method uses a newly developed miniature plane-strain one-dimensional compression cell that facilitates simultaneous full-field surface displacement measurements using digital image correlation and SAXS measurements. The 60–120 s acquisition times offered by SAXS at synchrotron facilities are beneficial to study time-dependent mechanisms in clays. The experimental results presented indicate that, for the natural sensitive clay tested in this work, no significant structural changes occur at the intra-particle scale during loading, even when large strains are measured at the macro-scale. In addition, changes that are observed at this scale occur after the end of perturbation, i.e. the creation of new intra-particle structures. Further information is obtained on the orientation evolution of the fabric by the comparative analysis of the individual mineral component response.</p>},
  author       = {Birmpilis, Georgios and Hall, Stephen A. and Lages, Sebastian and Dijkstra, Jelke},
  issn         = {1861-1125},
  language     = {eng},
  number       = {6},
  pages        = {1965--1975},
  publisher    = {Springer},
  series       = {Acta Geotechnica},
  title        = {Monitoring of the nano-structure response of natural clay under mechanical perturbation using small angle X-ray scattering and digital image correlation},
  url          = {http://dx.doi.org/10.1007/s11440-019-00832-8},
  doi          = {10.1007/s11440-019-00832-8},
  volume       = {14},
  year         = {2019},
}