This special device was developed for direct shear tests, which can be achieved under different pore pressure conditions. Using a pressure chamber around the direct shear box, pore pressures up to 1000 kPa can be applied during the test. 

Option:

• As a special edition we offer additional equipment for unsaturated direct shear tests.
• In combination with modified HAEV-ceramic discs and a pore air pressure control system, unsaturated conditions with different suction stress ranges are possible.