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September 20, 2021
  All Categories  >  Soil Testing/Geo/Environmental  >  Triaxial
  Product Information
Floor Standing Soils Resilient Modulus Testing System
Model: STTX-2
Price: $165,000.00
Condition: New
Warranty: Yes
Availability: Inquire
   Product Model # Price   Sale Price Qty
 Floor Standing Soils Resilient Modulus Testing System   STTX-2   $165,000.00      
  This is a highly flexible, floor standing, servohydraulic universal testing system that will never become obsolete. When equipped with computer, software and other appropriate accessories, this system can perform Soils Resilient Modulus testing either manually or fully automated.

This system is an updated version of the machine and software originally used by SHRP to develop the Soils Resilient Modulus protocol, and has successfully completed several thousand tests.

The flexibility of the loading system and standard software packages allows it to perform virtually any other testing up to the 100kN maximum rated load. Optional temperature or T/H chambers, asphalt testing fixtures, compression platens and triaxial cells are available to create a complete testing system. A separate hydraulic power supply may be selected from a wide range of capabilities, including air or water cooled, remote location, acoustic enclosure or quiet pump.

NOTE: Each system is individually configured based on your requirements, so listed price and configurations should be considered only as a guide.
  • Floor standing load frame
  • Adjustable table for convenient test height and easy lifting of triaxial cells
  • Hydraulically adjustable crosshead allows testing of specimens over 5 feet high
  • All components fatigue rated
  • Fully digital closed loop control with 5KHz loop rate
  • Intelligent limits in all channels
  • Autotuning allows automatic adjustment of PID settings prior to testing; no cycle out of tolerance
  • Adaptive control for automatic adjustment of PID settings 5000 times/second
  • Load Protect feature allows 100kN actuator to contact specimen gently
  • Operator prompted to input administrative data; fields tailored to individual laboratory
  • Report tailored to individual laboratory
  • Software allows fully automated testing; computer controlled confining pressure
  • Documented repeatability testing of single sample/single operator better than 5%
  • Documented repeatability over multiple laboratories better than 5%
  • Seal drag documented for new triaxial cells prior to shipment
  • Seal drag measured using actual test setup
  • Existing components (triaxial cells, compression platens, LVDT’s) may also be used
  • Automatic transducer recognition eliminates operator error
  Testing Standards
  • AASHTO T307
  • Numerous US and EU soil and asphalt specifications


  • Load accuracy +0.5% OF READING above 1% of full scale – highest in the industry
  • High resolution allows 5kN (1124 lb.) load cell to measure 0.5 lb. seal drag accurately
  • Fully digital control system with 5KHz servo loop closure rate, regardless of features enabled
  • No transducer ranges required
  • Intelligent limits allowing multiple user-selected actions
  • User selectable data acquisition rate, up to 5000 points/second on all channels simultaneously
  • Operator settable load protect value
  • Shear web load cell – no worry about lateral motion
  • Load cell overload range 200%
  • Software packages available for wide variety of tests
  • Computer interface standard GPIB; no proprietary boards inside computer
  • Support available for all Instron equipment; no worry about obsolescence
  • Internal LVDT for displacement control
  • Software allows administrative data to be customized at installation
  • Software written in LabVIEW, with source code available
  • Fatigue rated actuator designed for low distortion.


  • Net Dimensions: 41"w X 39"d X 102"h varies with configuration
  • Shipping Dimensions: varies


  • Net Weight: 1400 lb. (installed)
  • Shipping Weight: varies

Recommended Accessories

  • Triaxial cells for 100 and 150mm specimens

Included Accessories

  • Automatic confining pressure control
  • Dual LVDT displacement transducers
  • 7.1gpm Hydraulic Power Supply
  • Triaxial cell with low seal drag
  • Software allowing manual or fully automated testing

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