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Emergence of Strain Localization in Porous Rocks Characterized by Full-Field Measurement in Plane Strain Condition

Bésuelle, Pierre / Lanatà, Patrizia

Abstract The development of a new true triaxial cell which contains a device to observe the specimen under loading for full field measurement, has allowed studying the emergence of strain localisation in rock specimens. Two porous rocks have been investigated, a sandstone and a clayey rock. Both show similarities in the strain localization process, with an early diffuse strain localization pattern well before the stress peak that evolves progressively toward a reduced number of shear bands pattern. This final pattern, being usually reported in the literature, is associated to the stress peak and initiation of strain softening.

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Emergence of Strain Localization in Porous Rocks Characterized by Full-Field Measurement in Plane Strain Condition

Bésuelle, Pierre / Lanatà, Patrizia

Abstract The development of a new true triaxial cell which contains a device to observe the specimen under loading for full field measurement, has allowed studying the emergence of strain localisation in rock specimens. Two porous rocks have been investigated, a sandstone and a clayey rock. Both show similarities in the strain localization process, with an early diffuse strain localization pattern well before the stress peak that evolves progressively toward a reduced number of shear bands pattern. This final pattern, being usually reported in the literature, is associated to the stress peak and initiation of strain softening.

Emergence of Strain Localization in Porous Rocks Characterized by Full-Field Measurement in Plane Strain Condition

Bésuelle, Pierre / Lanatà, Patrizia

Abstract The development of a new true triaxial cell which contains a device to observe the specimen under loading for full field measurement, has allowed studying the emergence of strain localisation in rock specimens. Two porous rocks have been investigated, a sandstone and a clayey rock. Both show similarities in the strain localization process, with an early diffuse strain localization pattern well before the stress peak that evolves progressively toward a reduced number of shear bands pattern. This final pattern, being usually reported in the literature, is associated to the stress peak and initiation of strain softening.

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Title:

Emergence of Strain Localization in Porous Rocks Characterized by Full-Field Measurement in Plane Strain Condition

Contributors:

Bésuelle, Pierre (author) / Lanatà, Patrizia (author)

Published in:

Bifurcation and Degradation of Geomaterials with Engineering Applications ; 25-31

Springer Series in Geomechanics and Geoengineering

Publication date:

2017-01-01

Size:

7 pages

ISBN:

978-3-319-56397-8 , 978-3-319-56396-1

ISSN:

1866-8755 , 1866-8763

DOI:

https://doi.org/10.1007/978-3-319-56397-8_4

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Shear Band , Stress Peak , Strain Softening , Slenderness Ratio , Volume Strain Engineering , Geoengineering, Foundations, Hydraulics , Geotechnical Engineering & Applied Earth Sciences

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