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B216 Servo-Controlled Bending Beam Rheometer

( Asphalt Bitumen )

  • ASTM D6648
  • AASHTO T313
  • EN 14771

The Pavetest BBR is a thermoelectrically-cooled bending beam rheometer for testing the flexural creep of asphalt binders from ambient to –40 °C (± 0.03 °C).

The load is applied by a miniature servo-controlled actuator capable of applying up to +/- 10N and loading frequency from static to 25Hz, without the need for a compressed air supply. The use of servo-control eliminates the need for frequent calibration and repeated adjustment of air-bearing pressures. Just enter the required load and the servo-controlled actuator will apply and maintain the requested load with incredible precision. The temperature is controlled very precisely using a temperature controller mounted on the front of the machine. The user can set the bath temperature using the controller or via the software. The BBR is supplied complete with a suitable chiller to ensure a temperature range between ambient and -40°C. The heart of the system is Pavetest’s industry-leading Control and Data Acquisition System (CDAS) and world-acclaimed (TestLab) software.

Common Applications:

  • Flexural creep of asphalt binders
  • Low-temperature characterization of the crack seal under load
  • EN 14771, ASTM D6648, AASHTO T313, SHRP Binder Provisions For Low-Temperature Flexural Creep Testing of Asphalt Binders


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  • B216-01
    Mould for BBR
  • B216-06 KIT
    Calibration Kit
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  • Servo-control eliminates the need for frequent calibration and repeated adjustment of air bearing pressures
  • Loading frequency from static to 25Hz
  • No need for compressed air supply
  • TE-cooled with solid-state Peltier devices
  • Includes a separate air-water heat exchanger
  • An integrated, self-contained bath cools using ethanol as the bath medium
  • Set and monitor the temperature of the bath via the software
  • Meets or exceeds ASTM, AASHTO and SHRP requirement for low temperature flexural creep testing of asphalt binders including ASTM D6648 and AASHTO T313
  • Temperature range: Ambient to −40 °C
  • Temperature stability: ± 0.03 °C with resolution to ± 0.01 °C
  • Resolves specimen beam deflection to 0.01 µm
  • Load cell span: 50 N
  • Load cell resolution: 50 µN
  • Range: 20 MPa to 1 GPa
  • Loading frequency from static to 25Hz
  • Power supply:
    • BBR: 110-230V, 50/60Hz, 1ph, 850W
    • Chiller: 230V, 50/60Hz, 1ph, 590W or 110V, 50/60Hz, 1ph
  • Dimensions:
    • BBR: 60x50x52(h) cm
    • Chiller: 47x53x40(h) cm
  • Weight:
    • BBR: 39 kg
    • Chiller: 48 kg