Static Triaxial System (Advanced)

The VJ Tech Pro Automatic Triaxial Testing System is engineered to deliver fully automated total and effective Triaxial testing for samples with diameters up to 300 mm and loads up to 250 kN. This comprehensive Static Triaxial system can efficiently conduct tests such as Consolidated Drained (CD), Consolidated Undrained (CU), Unconsolidated Undrained (UU), Stress Path tests, and Slow Cyclic Testing up to 0.1 Hz, depending on the amplitude.

The Pro Dual Automatic Pressure Controller is an integral component of the system, designed to precisely control and measure both Cell and Back Pressure as well as Volume for pressures up to 3500 kPa (Higher pressure systems available). The Static Triaxial system is complemented by our advanced Clisp Studio software, which facilitates test set-up and monitoring through a USB or Ethernet connection.

The software provides real-time result display and post-test analysis, allowing for the generation and export of detailed reports for further evaluation on a PC.

  • Fully automated testing from Saturation, Consolidation, and Shearing – without user intervention in between.
  • Compact and standard Triaxial System Options available.
  • Advanced Stress path control, K0, anisotropic, and Slow Cyclic up to 0.1 Hz (amplitude-dependent).
  • The system is provided with 9 Analogue and 1 Digital Channel Input.
  • Built-in logger allowing high-speed sensor data conversion (24-bit, up to 5000 samples/s).
  • Closed Loop control for Displacement, Load, Speed mode, and Pressure.
  • Flexibility to adjust PID for a variety of samples, ranging from stiff to soft soils.
  • Auto engage function to easily apply seating load.
  • Soft limits adjustable for all channels.
  • Standalone Use via Touchscreen display with data export to PC.
  • Built-in live data table and graphs.
  • Built-in auto protection for mechanical limits & sensor limits.
  • Auto reverse from limit switch activation.
  • Multiple Units can be controlled from a single PC via a LAN or Ethernet/USB hub.
  • USB or Ethernet connectivity for PC Control.
Load Range (kN)
10, 50, 100, 250, 500
Pressure Range (MPa)
1, 3.5, 7, 14, 70
Sample Sizes diameter (mm)
35, 38, 50, 63.5, 70, 75, 100, 150, 300, 315 mm dia (Other sizes available upon request)
PC Connectivity
USB or Ethernet
Test Performed

Triaxial Tests (UU, CU, CD)
Stress Path
Advanced Triaxial and Cyclic Tests

BS1377-7 : 1990 BS1377:2-2022 (Clause 28 & 27) BS1377:2-2022 (Clause 29 & 30)
BS EN ISO 17892-7 BS EN ISO 17892-8 BS EN ISO 17892-9
ASTM D1883-07 D2166 (-13 & -16) D2850 (-03A & 15) D4767 (-95 & -11) D7181-20
AS1289.6.4.1 (1998 & 2016) AS1289.6.4.2 (1998 & 2016)
Hong Kong
T171 Modified Texas Triaxial Compression
Displacement Sensors (External)

Available in a variety of Displacement Ranges, common sizes (mm) are 10, 25, 50, 100.

Load Cells (External)

Typically used for standard UU, CIU, and CID tests. Available in a variety of load ranges; common capacities (kN) include 5, 10, 20, and 50. Additional sizes are available upon request.

Load Cells (Internal Submersible)

Internal Submersible Load Cells are pressure compensated, and positioned within the Triaxial Cell (or Pressure Chamber). They are typically used for more advanced tests and required for Anisotropic/k0 Consolidation and Extension Tests. Available in a variety of load ranges; common capacities (kN) include 5, 10, 25, and 50. Additional sizes are available upon request.

Pressure Transducers (External)

Available in a variety of Pressure Ranges. Typically used for PwP measurement and will require a De-airing Block.

Pressure Transducers (Internal)

Allows for mid-height PwP Measurement, this sensor is mounted directly on the Sample. Available in a variety of Pressure Ranges.

Transducer Access Ring

The Access Ring upgrades your Triaxial Cell to acccommodate internal sensors, allowing the cables to exit the Chamber without leakage.

Top Cap & Base Pedestals (Triaxial)

Top Caps and Base Pedestals are available in a variety of sizes and are designed to be easily interchanged within your Triaxial Cell. Top Caps are available in a range of types, including Domed (Compression only), Fixed (Compression and Extension) and Suction (Compression and Extension)

Internal Submersible LVDT Kit (Triax)

Typically includes one radial caliper, two axial brackets, and three LVDT sensors. If required, a Signal Conditioning box can be provided.

Bender Elements

Available in both Vertical and Horizontal positions, in a variety of sizes.

De-aired water system

De-aired water tank (19 litre capacity) availability in hard anodised finish, or stainless steel for better durability. Vacuum pump is required; sold separately.

Automatic Solenoid Valve

The Solenoid Valve allows for complete automation by opening/closing valves eliminating the need for user intervention. This is achieved via Software integration.

APC Water & Air Distribution Panel

Assists users fill/empty their Pressure Controllers, Triaxial Cells and other pressure chambers. A variety of sizes panels are available to connect multiple devices. Can be supplied with or without a mechanical pressure gauge; which can act as an independent reference point.

Porous Stones

Variety of sizes available in Bauxite stone or Sintered Metal for improved durability during high loads

Filter Paper

Available in a variety of sizes

Upgrade Options *
Environmental Triaxial Test (-20°C to +80°C)
Constant Rate of Strain (CRS)
Soil Water Characteristic Curve (SWCC)
1-D Consolidation tests (Oedometer)
Internal LVDT for higher precision displacement measurement closer to the specimen
Permeability Testing
Stress Path Tests
Advanced Triaxial and Cyclic Tests
Dynamic (Cyclic) Triaxial Test
Bender Element Testing
CBR (California Bearing Ratio) Tests
Marshall Tests
*Upgrade options will require additional hardware. Contact us for more information.

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