PLANE STRAIN APPARATUS (PSA)
This Plane strain apparatus is designed and manufactured to study mechanical properties and shear band failure of soil and generates and controls sophisticated stress/strain paths.
In the plane-strain state the deformation of the soil is considered to be, approximately, zero in one direction for example the long dimension of the structure and the soil is free to deform in the other two directions.Some example of the plane-strain state are Long retaining walls, embankments, strip foundations, and slopes.The apparatus is designed for the testing of a soil specimen in a rectangular cuboid with dimensions up to 120x100x40mm (LxWxH) under confined conditions.
There is a possibility to embed submersible pressure transducers which are available in different ranges up to 1000KPa in the two stainless steel vertical platens of the PSA apparatus. This gives the possibility to measure sigma 2 at four points. Each platen can accept 2 miniature pressure transducers which are located in vertical direction (top and bottom position of specimen).
- Features
- Specifications
- Software
- Standards
- Applications
- High stiffness floor type electromechanical load frame
- Axial load up to 150 kN
- Large testing area for confined cell up to up to 150 mm sample diameter
- Free-end technique using a linear bearing platform low friction ball bearing
- Direct measurement of lateral stress (σ2) by four pressure transducers
- Visibility of the shear band and ability of measuring the intermediate stress
- Triaxial test and plane strain test in one set up
- Easy sample set up and handling of the test
- Standard Cell pressure up to 2000 kPa
|
Axial Laod |
10kN up to 150KN |
|
Sample size |
120x100x40mm (LxWxH) |
|
Cell pressure |
2000 kPa (upgradable up to 20MPa) |
- Data Acquisition, processing and device management (DPD) Module
- Saturation Module
- B-value -Test Module
- Consolidation Module (Isotropic or anisotropic)
- Permeability Test Module
- Stress path module: Linear stress paths- p, q or s, t
- Static Shear Stage Module: UU: Unconsolidated Undrained Triaxial Test (Total Stress test)
- Static Shear Stage Module: CU: Consolidated Undrained Triaxial Test with pore pressure measurement (Effective Stress test)
- Static Shear Stage Module: CD: Consolidated Drained Triaxial Test with pore pressure measurement (Effective Stress test)
- Unsaturated Test Module
- K0 Test Module
- Tension (Extension) Test Module
- Not available
- Detailed information will follow soon