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Marshall Stability Machine – Digital


The TAS-0056 50 kN Capacity Automatic Marshall Stability Test Machine is used to determine the maximum load and flow values of bituminous mixtures. The machine comprises of a robust and compact two column frame with adjustable upper cross beam. The unit is a bench mounting compression frame with motor and worm gear housed within the base unit. The speed of the lower platen can be adjusted between 6 mm/min to 60 mm/min using the BC100 Data Acquisition and Control Unit. For safety, the up and down travel of the lower platen is limited through the use of limit switches. Rapid adjustment of the platen is controlled using the up and down buttons on the front panel of the machine. The machine can be hand operated by a lateral hand wheel for calibration purposes. The measuring system consists of a 50 kN capacity strain gauge load cell fitted to the upper cross beam to read stability values and the 25 x 0.001 mm linear potentiometric displacement transducer fitted to the Breaking Head. The TAS-0056 Automatic Marshall Stability Machine is suitable for testing 6” dia. specimens (152.4 mm) conforming to ASTM D5581.


  • EN 12697-34
  • EN 12697-23
  • EN 12967-12 (Method A and B up to 51 mm/min)
  • ASTM D1559
  • ASTM D5581
  • ASTM D6927
  • AASHTO T245

Key Features

  • Automatically calculates flow and stability values
  • Can perform test with displacement control
  • Real time display of test graph
  • CPU card with 32-bit ARM RISC architecture
  • Permanent storage capacity up to 10,000 test results
  • 4 analog channels, 2 channels are active for Marshall
  • Programmable digital gain adjustment for load-cell, pressure transducers, strain-gauge based sensors, potentiometer sensors, voltage and current transmitters
  • 1/256000 points resolution per channel
  • 10 data per second sample rate for each channel
  • Ethernet connecting for computer interface
  • 800×480 resolution 65535 colour TFT-LCD industrial touch screen
  • 4 main function keys
  • Multi-language support
  • 3 different unit system selection; kN, Ton and lb
  • Real-time clock and date
  • Test result visualisation and memory management interface
  • Remote connection through ethernet and Bluetooth
  • USB flash disc for importing test results and for firmware
  • USB printer support for inkjet and laser printers (ask for compatible models)
  • Camera support for real-time video recording during test (ask for compatible models)
  • Free of charge PC software for the test control and advanced report generation

Supplied With:

    The Automatic Marshall Stability Test Machine is supplied complete with:

  • Load Cell, 50 kN
  • Linear Potentiometric Displacement Transducer with Bracket, 25 x 0.001 mm
  • PC Software
  • Connection Cable
  • Hand wheel for manual control
  • Breaking Head, 4”


Accessories are not included in the price of main device (unless stated otherwise) and may be purchased separately if required.

TAS-0057 Breaking Head (Stability Mould) 4″
TAS-0058 Breaking Head (Stability Mould) 6″
TAS-0060 Linear Potentiometric Displacement Unit, 25 x 0.001 mm with bracket for TAS-0057 and TAS-0058
TAS-0063 Indirect Tensile Test Jig for compacted bituminous samples 100 mm (4″).


Technical specifications are subject to change without notice.

Platen Speed 6-60 mm/min
Capacity kN 50
Dimension mm (W x D x H) 550 x 700 x 1200
Weight Kg 103
Power W 1100