Asphalt Bending Beam Rheometer (BBR)
The LWL asphalt bending beam rheometer measures the flexural creep stiffness or compliance of asphalt binders using the AASHTO T 313-04 bending-beam rheometer method. It is intended for low-temperature testing of unaged binders and binders conditioned by RTFOT (AASHTO T 240) and/or PAV (AASHTO R 28).
- Model
- LWL
- Category
- Rheology
Product Description
The LWL is designed for the AASHTO T 313-04 bending-beam rheometer method and measures the flexural creep stiffness or compliance of asphalt binders. Test materials include unaged binders and binders conditioned by RTFOT (AASHTO T 240) and/or PAV (AASHTO R 28) procedures. The system comprises high- and low-temperature thermostatic baths, a lever loading mechanism, a data-acquisition system, and a computer data-processing system.
The supplied configuration includes a test host with embedded touchscreen test software, operating instructions, a temperature-controller manual, and specimen molds. This page is a configuration overview; obtain a verified model-specific datasheet confirming the loading-force range and beam-fixture configuration before technical selection.
Technical Specifications
| Parameter | Specification |
|---|---|
| Test operating temperature range | −36 to 22 °C |
| Temperature-control range | −36 to 60 °C |
| Temperature accuracy | ±0.1 °C |
| Cooling power | 1,500 W |
| Heating power | 2,000 W |
| Referenced test method | AASHTO T 313-04 bending-beam rheometer method |
| Binder conditioning | Unaged; RTFOT (AASHTO T 240); and/or PAV (AASHTO R 28) |
| Digital displacement measurement range | 0–40 mm |
| Displacement accuracy | 0.04 mm |
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