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.
Vacuum residue Specification
|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|
|Ring-and-ball softening point, °C, Min||20||25||30|
|Density at 20 °C, kg/m3, Min||970||980||990|