Test Standard Category

B039A ASC-Asphalt Shear Box Compactor

( Asphalt )

  • ASTM D7981-15

The only electromechanical shear box compactor

The ASC is being used in FHWA Contract “Deployment of Performance Based Technologies for Mechanistic-Empirical Pavement Design and Resource Responsible Materials Design” to fabricate specimens for Level 1 analyses using the AASHTOWare Pavement ME Design software.
It is the only compactor capable of fabricating specimens for all of the following mechanistic-empirical performance tests:

  1. Dynamic Modulus, AASHTO PP 61
  2. Repeated Load Permanent Deformation, AASHTO TP 79
  3. Flexural Fatigue, AASHTO T321
  4. Low Temperature Creep and Strength, AASHTO T322


  • Extremely sturdy fabricated frame combined with precision machined components
  • Servo hydraulic vertical ram with integral hydraulic power supply
  • Precision electro-mechanical shearing motion
  • Integral specimen extruder
  • Electronic control unit with touch screen color display (no need for PC)
  • Unlimited memory storage with: 2 USB ports, 1 SD card slot , RS232/485 serial port
  • The compaction cycle can be programmed by specifying vertical stress/load and test termination conditions; Number of cycles, Specimen height and/or density
  • ASC can be equipped with a precision load cell for vertical and shear stress measurement, upon request
  • Optional built-in mould heater

Power supply: 230V 1ph 50/60Hz
Dimensions: 788x1360x(H)1314mm
Weight: 1200 kg

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Slabs Laboratory Compaction

  • ASTM D7981-15
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  • Vertical force: up to 100kN
  • Shearing force: up to 50kN
  • Shear angle: 4° ± 0.1°
  • Shearing cycle rate: 3 ± 0.1 cycles per minute
  • Mould width: 150mm ± 0.1 mm
  • Mould length: 450mm ± 0.1 mm
  • Mould surface finish (inside): smoother than 0.4µm rms
  • Mould surface hardness: more than 48 Rockwell C
  • Mould capacity: approx. 20 litres
  • Loading platen width: 149 mm ± 0.2 mm
  • Loading platen length: 449 mm ± 0.2 mm
  • Loading platen smoothness: smoother than 0.4µm rms
  • Loading platen surface hardness: more than 48 Rockwell C
  • Number of cycles: up to 100
  • Vertical stress: 0.1 to 1.5MPa ± 0.01MPa
  • Compaction height: 0 mm to 200 mm ± 0.1mm