Vacuum residue (VR) is a good substitute to low-viscous bitumen grades. It is widely used to prepare bitumen mixes especially for use in cold climates, where low viscosity and higher penetration are very important.
| Parameter | Grade 1 | Grade 2 | Grade 3 |
|---|---|---|---|
| Relative viscosity at 80°C, nozzle 5 mm, с | 20-60 | 61-120 | 121-200 |
| Flash point, °C, Min | 200 | 230 | 260 |
| Moisture, % | Traces | ||
| Ring-and-ball softening point, °C, Min | 20 | 25 | 30 |
| Density at 20 °C, kg/m3, Min | 970 | 980 | 990 |
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