ISO 17892-9 is the ISO method for consolidated triaxial compression tests on water-saturated soils. It applies to the laboratory determination of triaxial shear strength under compression loading within a geotechnical investigation.
A cylindrical specimen of undisturbed, re-compacted, remoulded or reconstituted soil is consolidated under an isotropic or anisotropic stress with drainage, then sheared under undrained or drained conditions. The test gives shear strength, stress-strain relationships and effective stress paths. Each test covers one specimen, and ISO notes that at least three related tests are needed to determine shear strength parameters, with the evaluation procedure given in an annex. Special procedures such as multi-stage tests, K0 consolidation and extension tests are not fully covered.
The work is done in a triaxial system that controls cell pressure, drainage and axial loading through consolidation and shearing. Our Automatic Triaxial Testing System is used for consolidated triaxial testing to ISO 17892-9. If you need help matching ISO 17892-9 requirements to your parts or setup, contact our team.
