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Overview: The GDS Combined Advanced Dynamic Cyclic Simple Shear (ADVDCSS) is a testing system that can be used for dynamic cyclic simple shear and dynamic triaxial testing. The ADVDCSS allows the principal stress direction to continuously rotate through 90 degrees, giving the ability to simulate the stress states common to many geotechnical problems, including earthquake loading. Then, by moving the machine into ‘triaxial mode’ and installing the longer cell wall, the device may be used for dynamic and static triaxial tests.

Tests that can be Performed: Consolidated drained (CD) triaxial, consolidated undrained (CU) triaxial, consolidation (Triaxial), cyclic loading of samples under either load or strain, slow cyclic testing, quasi-static (low speed/creep) tests, stress paths, user defined waveforms, cyclic simple shear, simple shear, K-zero, permeability and simple shear.

Upgrade Options: Bender element testing, unsaturated testing (Method A & D) and to local strain measurement (triaxial).