Cyclic Soil True Triaxial Apparatus

The Cyclic True Triaxial test system is a fully automatic system used to study the behavior of soil under various compressive stress regimes on cubic samples via three independently controlled principal axes (σ1 ≠ σ2 ≠ σ3) under static and cyclic loading.

The Cyclic Soil True Triaxial Apparatus applies vertical and horizontal independent loads by cyclic electromechanical or optionally servo-hydraulic actuators for axis 1 and axis 2 and the cell pressure is used for axis 3.

The Cyclic Soil True Triaxial Apparatus includes 4 electromechanical load actuators that work in pairs and each of them has its own LVDT displacement transducer and submersible load cells and has stress or strain feedback control.


  • Features
  • Specifications
  • Upgrade Options
  • Software
  • Standards
  • Applications
  • High Stiffness robust true triaxial cell with cell pressure up to 2 MPa
  • Large Front Window for observation of sample
  • Four (4) cyclic Electromechanical actuators for applying independent stresses (σ1 ≠ σ2 ≠ σ3)
  • Sample size: 75x75x150mm
  • Electrical feed-throughs for all internal sensors
  • Ethernet Port for fast data transferring to PC
  • Compatible to LABVIEW©
  • Flexible controlling software for nearly unlimited test procedures of all test options
  • 4 Submersible load cell to measure and closed loop control of load with minimum friction effects
  • Real-time data and graph display

 

Loading type

Electromechanical / Servo Hydraulic

Numbers of Actuators

4 off(for 2 main stress axis)

Actuator Load Range

Up to 25kN

Frequency

5Hz / 10Hz

Stroke

100mm

Cell Pressure

2 MPa

Confining Pressure Accuracy

0.1% F.S

Sample Sizes

75 x 75 x 150mm

Computer Interface

Ethernet

  • Servo-hydraulic actuators for higher loads and frequencies
  • Bender Element Test Package
  • Unsaturated Test Package
  • Non-contact displacement sensor for lateral axis
  • Temperature control package for low and high temperatures
  • Different sample sizes
  • 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
  • Static loading control of X and Y axes by load, displacement, stress or strain and Z axes by stress
  • Cyclic loading control of X and Y axes by load, displacement, stress or strain and Z axes by stress
  • Dynamic test control of x and y axes, with static stress control of the z axis.
  • All shear stages (compression and extension tests for simulating all kinds of stress paths
  • Unsaturated test conditions with air pressure control (If the hardware is available)
  • Plane strain test, K0 test, and small shear strains
  • Dynamic Shear Stage Module:
  • Dynamic triaxial test module with stress or strain control including of Cyclic stress controlled , Cyclic strain-controlled, and Optional liquefaction test
  • Advanced loading Module Different types of loading waveform can be given to the sample e.g. Sinusoidal, Square, Triangular, Rectangle, Ramp signal and user-defined waveform
  • Dynamic ramps

 

  • Not available
  • Detailed information will follow soon
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