Bending beam rheometer （BBR）
Description:
The Pavetest BBR is a thermoelectrically-cooled bending beam rheometer for testing 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 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.
Technical parameters:
1. Load range: | 0-500g |
2. Load accuracy: | 0.1g |
3. Flexural creep stiffness modulus: | 20-1000MPa |
4. Displacement range: | 0-50mm |
5. Displacement accuracy: | 1μm |
6. Preload force: | 35mn (±10mn) |
7. Actual loading force: | 980mn (±50mn) |
8. Temperature range: | room temperature~-40℃±0.1℃ |
9. Working power supply: | 220V, 50Hz |
10. Equipment size: | (H*W*D) 410*590*960mm |
11. Loading method: | pneumatic loading |
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