Influence of fissure inclination and confining pressure on the local behaviour of natural clays
(2019) 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019 In E3S Web of Conferences 92.- Abstract
In this experimental study the influence of fissuring orientation and confinement pressure on the mechanical behaviour of natural clays is investigated. The tested material, the scaly clay from Santa Croce di Magliano (south of Italy), is characterised by an intense network of pre-existing fissures of single orientation. Several plane strain compression tests have been conducted, under different confinement pressures (i.e., from 50 to 600 kPa), on specimens having fissures with vertical, medium and horizontal inclination. Digital Image Correlation has been used to follow the deformation processes of the specimens throughout the tests by measuring incremental shear and volumetric strain maps. The results showed a strong coupling between... (More)
In this experimental study the influence of fissuring orientation and confinement pressure on the mechanical behaviour of natural clays is investigated. The tested material, the scaly clay from Santa Croce di Magliano (south of Italy), is characterised by an intense network of pre-existing fissures of single orientation. Several plane strain compression tests have been conducted, under different confinement pressures (i.e., from 50 to 600 kPa), on specimens having fissures with vertical, medium and horizontal inclination. Digital Image Correlation has been used to follow the deformation processes of the specimens throughout the tests by measuring incremental shear and volumetric strain maps. The results showed a strong coupling between the total confinement and the fissure inclination, that is controlling both the onset and the development of the patterns of the localisation processes. The new results have been compared with previous ones carried out on the same material without confinement. The comparison shed light on the role of total confinement that becomes particularly relevant from certain levels of pressures and fissuring inclination.
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- author
- Tudisco, Erika LU ; Vitone, Claudia ; Mondello, Cristina ; Viggiani, Gioacchino ; Hall, Stephen A. LU ; Cotecchia, Federica ; Castellano, Alessandra and Massaro, Francesco
- organization
- publishing date
- 2019-06-25
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
- series title
- E3S Web of Conferences
- editor
- Ibraim, Erdin and Tarantino, Alessandro
- volume
- 92
- article number
- 03004
- publisher
- EDP Sciences
- conference name
- 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
- conference location
- Glasgow, United Kingdom
- conference dates
- 2019-06-26 - 2019-06-28
- external identifiers
-
- scopus:85069683791
- ISSN
- 2267-1242
- ISBN
- 9782759890644
- DOI
- 10.1051/e3sconf/20199203004
- language
- English
- LU publication?
- yes
- id
- 8e02cc11-08aa-4d5b-b56c-8ab6455b9faf
- date added to LUP
- 2019-08-08 11:04:33
- date last changed
- 2022-04-26 03:31:23
@inproceedings{8e02cc11-08aa-4d5b-b56c-8ab6455b9faf, abstract = {{<p>In this experimental study the influence of fissuring orientation and confinement pressure on the mechanical behaviour of natural clays is investigated. The tested material, the scaly clay from Santa Croce di Magliano (south of Italy), is characterised by an intense network of pre-existing fissures of single orientation. Several plane strain compression tests have been conducted, under different confinement pressures (i.e., from 50 to 600 kPa), on specimens having fissures with vertical, medium and horizontal inclination. Digital Image Correlation has been used to follow the deformation processes of the specimens throughout the tests by measuring incremental shear and volumetric strain maps. The results showed a strong coupling between the total confinement and the fissure inclination, that is controlling both the onset and the development of the patterns of the localisation processes. The new results have been compared with previous ones carried out on the same material without confinement. The comparison shed light on the role of total confinement that becomes particularly relevant from certain levels of pressures and fissuring inclination.</p>}}, author = {{Tudisco, Erika and Vitone, Claudia and Mondello, Cristina and Viggiani, Gioacchino and Hall, Stephen A. and Cotecchia, Federica and Castellano, Alessandra and Massaro, Francesco}}, booktitle = {{7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019}}, editor = {{Ibraim, Erdin and Tarantino, Alessandro}}, isbn = {{9782759890644}}, issn = {{2267-1242}}, language = {{eng}}, month = {{06}}, publisher = {{EDP Sciences}}, series = {{E3S Web of Conferences}}, title = {{Influence of fissure inclination and confining pressure on the local behaviour of natural clays}}, url = {{http://dx.doi.org/10.1051/e3sconf/20199203004}}, doi = {{10.1051/e3sconf/20199203004}}, volume = {{92}}, year = {{2019}}, }