UNE-EN ISO 17892-9:2019

This international standard specifies a method for consolidated triaxial compression tests on watersaturatedsoils.This international standard is applicable to the laboratory determination of triaxial shear strengthunder compression loading within the scope of geotechnical investigations.The cylindrical specimen, which may comprise undisturbed, re-compacted, remoulded or reconstitutedsoil, is subjected to an isotropic or an anisotropic stress under drained conditions and thereafter issheared under undrained or drained conditions. The test allows the determination of shear strength,stress-strain relationships and effective stress paths. All stresses and strains are denoted as positivenumerical values in compression.Special procedures such as:a) tests with lubricated ends;b) multi-stage tests;c) tests with zero lateral strain (K0) consolidation;d) tests with local measurement of strain or local measurement of pore pressure;e) tests without rubber membranes;f) extension tests;e) shearing where cell pressure varies;h) shearing at constant volumeare not fully covered in this standard procedure. However, these specific tests may refer to generalprocedures described in this standard.NOTE This document fulfils the requirements of consolidated triaxial compression tests for geotechnicalinvestigation and testing in accordance with EN 1997-1 and EN 1997-2.