When performing stability tests for the purpose of designing dams and deep excavations, an essential component is the appropriate selection of strength parameters of soils. Due to the fact that on the shear surface we deal with, the principal stress direction rotates, it is important to determine the strength parameters for the compression and the extension loading conditions.
Using GDS Instruments automated triaxial hybrid apparatuses (in the GEOTEKO laboratory), compression loading and extension loading tests were carried out to determine the strength parameters of soil under these conditions. The GDSLAB software allowed these tests to be performed automatically with high precision. During the extension loading tests, it was very important to add pressure to the triaxial cell in very small increments. The GDS pressure / volume controllers allowed GEOTEKO to add this pressure with high precision (accuracy to 1 kPa). Depending on the investigation, tests can be undertaken with consolidation and shearing in undrained conditions.
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Who Are Geoteko?
GEOTEKO is a group of companies in Poland offering solutions to complex geotechnical problems. GEOTEKO has over 25 years of experience working on over 5000 projects, with the likes of KGHM Polska Miedz S.A., ORLEN S.A., Metro Warszawskie, ARUP, ARCADIS, HOCHTIEF, KELLER, AARSLEFF, MENARD, BUDIMEX. GEOTEKO has taken part in road, railway, hydrotechnical, housing, energy, mining, environmental and landfill projects. GEOTEKO’S activities include:
- Laboratory soil testing.
- Numerical modeling and geotechnical design.
- Field testing.
- Consultancy and training.
Apparatus Featured in Case Study