Monitoring of the nano-structure response of natural clay under mechanical perturbation using small angle X-ray scattering and digital image correlation
(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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- author
- Birmpilis, Georgios ; Hall, Stephen A. LU ; Lages, Sebastian LU and Dijkstra, Jelke
- organization
- publishing date
- 2019-12
- 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
- 2022-04-26 03:15:32
@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}}, keywords = {{Clay; DIC; Directional anisotropy; Nanoscale; Real-time; SAXS}}, 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}}, }