SOIL：[MECHANICAL TEST]Ring Shear Testing Apparatus
MIS-233-1-63
[Outline of Product Technology]
This apparatus measures the residual strength of soil by replicating phenomenon on the ground generated by landslides and slope failures.
A ring-shaped specimen can be attached on a shear ring that is apart upside and downside,
and can be fixed in the upper part with the normal stress load put on.
And then the specimen is sheared, rotatable in the lower part, and then the shear strength and deformation properties of the soil are measured.
As it is capable of creating greater deformation than the maximum shear strength,
it is especially appropriate when measuring the residual strength of overconsolidated clay that is an important
factor to consider a long-term major deformation of the ground (such as a landslide).
Its structure with an integrated rotation axis and rotating plate doesn't allow rotation error.
The gap on the binding ring is small and leakage of specimens and frictions between edges during shear operation can be removed.
Specifications
| Purpose | For estimation of a long-term major deformation |
|---|---|
| Testing method | Constant pressure test and constant volume test |
| Vertical control method | Servo motor |
| Vertical control mode | ･Stress control ･Displacement control |
| Shear control method | Servo motor |
| Shear control mode | ･Stress control ･Displacement control ･Speed control |
| Shear box pressure welding control method | Servo motor |
| Measurement items | ･Vertical loading ･Vertical displacement ･Shear loading ･Shear displacemen ･Shear speed ･Pore-water pressure |