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Unsaturated Soil Testing System (UNSAT)

GDS Unsaturated Triaxial Testing System (UNSAT) is an extension to traditional triaxial testing, in that soils from above the water table may be tested under conditions approaching the in-situ stress state and degree of saturation or partial saturation. All GDS triaxial testing systems (as well as triaxial equipment from other manufacturers*) can be modified to allow for Unsaturated Triaxial Testing. GDS provide 4 methods to perform unsaturated testing. Method A: direct volume measurement using am air pressure/volume controller Method B: HKUST inner cell Method C: double walled cell Method D: on-sample strain transducers