Hand operated Field Vane Shear Test Apparatus
Main components
1. Cross shaped blade:
-Composed of four rectangular metal blades arranged in a cross shape.
-The common sizes are a height of 100 millimeters and a diameter of 50 millimeters (different sizes can be selected according to the properties of the soil).
2. Connecting rod:
-Connect the cross blade to the ground equipment to transmit torque.
-Usually designed to be detachable, easy to carry and install.
3. Torque measuring device:
-Includes a dial or digital display for recording the torque applied to the cross plate.
-Some devices are equipped with spring or mechanical torque sensors.
4. Hand cranked rotating handle:
-Used for manually rotating the vane blades, typically at a constant rate (6 °/min to 12 °/min).
-The handle may be equipped with scales or markings for easy control of rotation speed.
5. Bracket or fixing device:
-Used to stabilize the equipment and ensure that the cross blade is vertically inserted into the soil during the testing process.
working principle
1. Insert the cross blade vertically into the soil to the predetermined depth.
2. Rotate the cross plate blades at a constant speed by hand cranking the handle, while recording the applied torque.
3. When the soil undergoes shear failure, record the maximum torque (\ (T {max} \)).
4. Calculate the undrained shear strength of the soil (\ (c_u \)) based on the torque and geometric dimensions of the cross blade.
Application
-Soft clay strength determination: vane Shear Test Apparatus applicable to the undrained shear strength determination of saturated soft clay.
-Foundation design: Provide data for the analysis of bearing capacity, settlement, and stability of soft soil foundations.
-Construction monitoring: Soil Cross Plate Shear Vane Tester evaluate changes in soil strength during the construction process.
-Field survey: Field Vane Shear Test suitable for rapid testing in remote areas or construction sites.
Parameter
| Name | Electronic field vane shear tester |
| Test ranges | 0 ~130KPa |
| Penetration force | 30KN |
| Penetration depth | 20~30M |
| Penetration speed | 0.5-1M/MIN |
| Cross plate shear | <132Kpa |
| Penetration Mode | Manual |
| Probe diameter | 10CM 15CM |
| Weight | 60Kg |