Coarse grained soil direct shear tester

The coarse-grained soil direct shear tester is mainly used for on-site testing and research of dam materials and riverbed cover layers in their original state.It can be used for soil consolidation tests and direct shear rheological tests.It can also be used to measure the friction coefficient between geotextile materials and between geotextile materials and soil.

The machine adopts a microelectromechanical hydraulic servo closed-loop measurement and control system,which can achieve constant velocity stress and displacement control,and the control mode can be smoothly switched during the test process.The measurement control unit has been applied and improved for many years,with mature technology and reliable operation.During the experiment,data such as load,displacement,and deformation are automatically collected.The test curve is displayed in real-time by the computer and the processing and storage of the test data are automatically completed.The test report can be printed according to relevant standards.

Test piece size(mm)Ø504.6x300(standard),300(optional),600(optional)

Sample container area 2000cm2(standard standard 504.6mm)

Axial pressure 1000KN,accuracy:0.1KN

Axial travel 250mm

Oil cylinder diameter 250mm

Voltage stabilization accuracy±0.5%FS

Maximum stress 3.5MPa

Displacement range(mm)0~150(2 displacement sensors)Resolution:0.01

Auxiliary lifting device significantly improves quality:500kg

Servo pump control(using servo motor to control oil pump speed:energy-saving and silent)

Power supply voltage AC 220V 50Hz

Total power 1.5KW

Host size 870x1450x1400mm

Main control cabinet size 560x570x1250mm

The total mass is about 2t