1Efficiency: Four link design can be tested simultaneously4A single sample, with a shortened testing time compared to traditional methods1/4.

2High precision: The load indication accuracy of the microcomputer control model reaches0.01kNDisplacement measurement0.001mm.

3Safety: Electric drive replaces manual loading to avoid the impact force of weights; Overload protection function prevents equipment damage.

4Multifunctionality: Supports consolidation fast shear, slow shear, residual strength testing, and some models can be extended for permeability testing.

Test steps of electric direct shear tester:

1Soil sample preparation: Take representative soil samples, make specific sized specimens according to the specifications, place them in a shear box, and install sensors.

2Apply normal stress: Apply the first level of normal stress through a vertical loading system, and start shearing after stabilization.

3Shear test: Start the horizontal shear system and shear the soil sample at the set rate, while recording the shear force, shear displacement, and vertical deformation.

4Destruction determination: When the shear force reaches its peak or the shear displacement reaches the diameter of the soil sample1/10At that time, determine the shear failure of the soil sample and stop the test.

5Repeat experiment: change the normal stress (usually set3-4Repeat the above steps, draw the relationship curve between shear strength and normal stress, and calculatecAnd with φ.