ABSTRACT
The triaxial test is an elementary test, performed to obtain mechanical properties of soils. Antifriction devices (lubricated end platens) were designed in order to suppress strong heterogeneous responses, such as barreling and localization of deformation along failure planes. In the past 20 years the study of localization patterns gained more attention and strain localization became an important research field, as experimental tools as ComputedTomography (CT) became available to study the internal structure of strained specimens (Desrues et al. 1996; Batiste et al. 2004). Such studies revealed complex localization patterns and shear band morphologies depending on the test conditions.
