Standard Triaxial Testing Systems

Standard triaxial system external/expandable data acquisition and pressure/volume controller
Wykeham Farrance triaxial testing equipment provide state-of-the-art systems strictly compliant with the most important International Standards to perform triaxial testing, such as: Unconsolidated Undrained (UU), Consolidated undrained (CU), Consolidated Drained (CD), Unconfined compression (UC), Stress Path, Permeability and unsaturated soil tests. This section summarizes our  three  macro standard configurations with increasing levels of sophistication and performances.

Standard Triaxial System with Analogue Measurement

Used by standard laboratories that don’t require digital measurement.

Standards BS 1377:6 BS 1377:7 ASTM D2850 ASTM D4767 ASTM D5084 BS 1377:8 ASTM D7181 EN 17892-8 EN 17892-9 EN 17892-8

Standard triaxial system with analogue measurement
Description

 

Standard triaxial System with analogue measurement is the ideal basic solution for performing standard triaxial tests such as effective and total stress laboratories that don’t require digital measurement.  All the data acquisition and test management are made in manual mode
Power supply is only required for air compressor and for triaxial load frame during failure stage. 

A typical Standard triaxial system with analogue measurements includes:

Load frame:  
– TRIAX specifically designed for triaxial applications is ideal for commercial laboratories that need a versatile machine capable of performing a wide range of tests. (Max sample sizes: 70 mm)
– TRITECH 50 kN or 100 kN: TRITECH original high-performance load frames for triaxial tests, ideal solution for advanced and research laboratories that perform high quality tests at high productivity levels.

Triaxial cell with accessories: standard triaxial cell with dedicated accessories for performing and preparing samples from 35 mm to 100 mm diameter.

Analogue measuring system: in a standard triaxial system

Pressure system: Air/water interface with air compressor and air filter, generally used for effective stress (two pressure lines are required for cell and back pressure)
Oil/water interface is also available, suggested when only total stress test (UU) is required.

Template for data processing and reporting: generally used in system with automatic data acquisition, but thanks to the high flexibility they can be used with manual input of data also in standard triaxial systems with analogue measurement.  

Main Features

 

  • Fully analogue data measurement using dial gauge, load ring, double burette and pore pressure transducer;
  • Pore pressure measuring with dedicated readout unit, ensuring a negligible change in volume of the circuit of the pore pressure, as required by the Standards;
  • Pressure system using air/water interface and triaxial panel with air pressure regulators;
  • Easily extended with dedicated accessories to perform additional tests such as permeability, unconfined, CBR, etc.;
  • Easily upgradable to digital measurement system.
Technical Specifications
 
Capacity: 50 kN and 100 kN  
Speed range:
– 0.00001 – 99.99999 mm/min (TRITECH)
– 0.00001 – 50.8 mm/min (TRIAX)
Working pressures:
– 1000 kPa (AIR/WATER INTERFACE and TRIAXIAL PANEL)
– 3500 kPa (OIL/WATER APPARATUS)
Specimen range: 35,38,50,70,100 mm diameter with STANDARD TRIAXIAL CELL
Sampling rate: manual with stopwatch

Standard Triaxial System with Built-in Digital Data Acquisition

Used by educational lab needing a compact solution without external data acquisition.

Standards BS 1377:6 BS 1377:7 ASTM D2850 ASTM D4767 ASTM D5084 BS 1377:8 ASTM D7181 EN 17892-8 EN 17892-9

Standard triaxial system with built-in data acquisition and pressure/volume controller
Description

 

Standard triaxial System with built-in data acquisition is the ideal compact solution for performing standard triaxial tests such as effective and total stress. .
 
A typical standard triaxial system with built-in acquisition measurement includes:

Load frame with four built-in channels:
– TRIAX specifically designed for triaxial applications and is ideal for commercial laboratories that need a versatile machine capable of performing a wide range of tests. (Max sample sizes: 70 mm)
– TRITECH 50 kN or 100 kN: TRITECH original high-performance load frames for triaxial tests, ideal solution for advanced and research laboratories to perform high quality tests at .

Triaxial cell with accessories: 
– Standard triaxial cell with dedicated accessories for performing and preparing sample form 35 mm to 100 mm diameter.
– Banded triaxial cell with dedicated accessories for performing and preparing sample from 38 to 150 mm diameter.

Digital measuring system: Data acquisition is included in the load frame; four channels are available for load, displacement, pore pressure and volume change. If Hydromatic standalone pressure unit is selected, a separate volume change device is not required. 

Pressure system:
– Hydromatic standalone pressure/volume controller, water pressure source and volume change controller for cell and back pressure.
– Air/water interface with air compressor and air filter

Template for data processing and reporting:  geotechnical Geo-Analysis-Templates suitable for real time data processing and printout of test certificates according to the most important international Standards.
 
More than 300 system configurations are available depending on type of test, sample size, pressure system. Please contact us for a complete offer. 

Main Features

On-board (via USB) automatic data acquisition for all the sensors required (vertical displacement, axial force, cell pressure, back pressure, pore pressure, volume change);    

  • User friendly 6” touch screen colour panel for local control of load frame and monitoring of the four channels in real time;
  • PC not strictly required for test management: tests can be easily managed from the 6” touch screen;
  • Compact configuration with small footprint;
  • Additional control mode, including machine and data acquisition via remote PC and software;
  • Additional package for data processing and reporting, fully compliant with ASTM and BS standards
 

Additional features with Hydromatic Standalone solution:

  • Easier installation and saving space: compressed air apparatus, control panels and ancillary air/water systems no longer required;
  • Closed loop automatic control and management of cell and back pressure;
  • User friendly 6” touch screen colour panel for local control of pressure and measurement in real time of pressure and volume change;
  • Ergonomic and versatile support of the control panel to be adjusted according the user’s preferences.
Technical Specifications
  • Capacity: 50 kN and 100 kN  
  • Speed range: 0.00001 – 99.99999 mm/min (TRITECH) or 0.00001 – 50.8 mm/min (TRIAX)
  • Working pressures: 3500 or 1700 kPa (HYDROMATIC) or 1000 kPa (AIR/WATER INTERFACE and TRIAXIAL PANEL)
  • Specimen range: 35,38,50,70,100 mm (STANDARD TRIAXIAL CELL) or 35,38,50,70,100,150 mm (BANDED TRIAXIAL CELL)
  • Load frame touch screen: resolution 640×480 pixel; 65K colours; Contrast ratio 250: 1
  • Pressure/volume controller touch screen: resolution 640×480 pixel; 65K colours; Contrast ratio 250: 1
  • Effective resolution: 131000 points
  • USB port
  • LAN communication
  • Sampling rate: 50 readings per second.
Accessories and Spare Parts
 
 
 
77-PV46202
Heater to pre-heat the box walls. 230V/50-60Hz/1ph
 
77-PV46204
Heater to pre-heat the box walls. 110V/60Hz/1ph
 
79-PV71102
Pneumatic Filtration Kit – Wall Mount 12 Bar

Standard Triaxial System with External/Expandable Digital Data Acquisition

Used by commercial and educational lab needing central data acquisition and flexible configurations.

Standards BS 1377:6 BS 1377:7 ASTM D2850 ASTM D4767 ASTM D5084 BS 1377:8 ASTM D7181 EN 17892-8 EN 17892-9

Standard triaxial system external/expandable data acquisition and pressure/volume controller
Description

 

Standard triaxial system with external data acquisition is the expandable compact solution for performing effective and total stress. Data acquisition can be shared with other soil testing equipment. (e.g. Consolidation, shear, permeability).
 
A typical standard triaxial system with external data acquisition system includes:

Load frame
– TRIAX specifically designed for triaxial applications and is ideal for commercial laboratories that need a versatile machine capable of performing a wide range of tests. (Max sample sizes: 70 mm)
– TRITECH 50 kN or 100 kN: TRITECH original high-performance load frames for triaxial tests, ideal solution for advanced and research laboratories that want to perform high quality tests at .

Triaxial cell with accessories: 
– Standard triaxial cell with dedicated accessories for performing and preparing sample from 35 mm to 100 mm diameter.
– Banded triaxial cell with dedicated accessories for performing and preparing sample from 38 to 150 mm diameter

Automatic data acquisition system with digital measurements: 
– GEODATALOG 8; it works directly connected to a PC. Data are automatically transferred to the PC in real time for live plotting and monitoring of the tests in progress.

Pressure system:
– Hydromatic standalone pressure/volume controller, water pressure source and volume change controller for cell and back pressure.
– Air/water interface with air compressor and air filter

Template for data processing and reporting:  geotechnical Geo-Analysis-Templates suitable for real time data processing and printout of test certificates according to the most important international Standards.
 
Standard triaxial configuration with external data acquisition can be used for performing additional test such as CBR, Unconfined and CRS, Permeability.
 
More than 300 system configurations are available depending on type of test, sample size, pressure system. Please contact us for a complete offer. 

Main features

Expandable solution, suitable not only for standard triaxial testing (effective/total stress) but also for other type of soil testing;

  • PC software for remote calibration of the channels and fully comprehensive data acquisition management;
  • Multiple and flexible triaxial configuration (e.g. one frame and three cells)  to perform simultaneously saturation, consolidation and monotonic shear;
  • Data acquisition shared with other soil testing equipment: the transducers can be grouped and combined by the user for matching different applications;
  • Additional package for data processing and reporting, fully compliant with ASTM and BS standards.
 
Additional features with Hydromatic Standalone solution:
  • Easier installation and saving space: compressed air apparatus, control panels and ancillary air/water systems no longer required;
  • Closed loop automatic control and management of cell and back pressure;
  • User friendly 6” touch screen colour panel for local control of pressure and measurement in real time of pressure and volume change;
  • Ergonomic and versatile support of the control panel to be adjusted according the user’s preferences;
  • LAN connection to the GEODATALOG8: pressure and volume measurements can be easily synchronized with the other readings and transmitted at the same time to a PC where the DATACOMM 2 software is installed.
Technical Specifications
  • Capacity: 50 kN and 100 kN  
  • Speed range: 0.00001 – 99.99999 mm/min (TRITECH) or 0.00001 – 50.8 mm/min (TRIAX)
  • Working pressures: 3500 or 1700 kPa (HYDROMATIC) or 1000 kPa (AIR/WATER INTERFACE and TRIAXIAL PANEL)
  • Specimen range: 35,38,50,70,100 mm (STANDARD TRIAXIAL CELL) or 35,38,50,70,100,150 mm (BANDED TRIAXIAL CELL)
  • Pressure/volume controller touch screen: resolution 640×480 pixel; 65K colours; Contrast ratio 250: 1
  • Effective resolution: 131000 points
  • LAN communication with PC 
  • Sampling rate: 500 readings per second.

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