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

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 similar...

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Bibliographic Details
Published inBifurcation and Degradation of Geomaterials with Engineering Applications pp. 25 - 31
Main Authors Bésuelle, Pierre, Lanatà, Patrizia
Format Book Chapter
LanguageEnglish
Published Cham Springer International Publishing
SeriesSpringer Series in Geomechanics and Geoengineering
Subjects
Shear Band
Slenderness Ratio
Strain Softening
Stress Peak
Volume Strain
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Summary: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.
ISBN:9783319563961
3319563963
ISSN:1866-8755
1866-8763
DOI:10.1007/978-3-319-56397-8_4