Viscosity grades
Indeed, their category depends on the type of solvent referred to as refinery tars and divided in accordance with viscosity and gravity, the discussed tars are distilled by aeration and vacuum of tower bottom, viscous tars are useable for road construction, pavement, construction and isolation due to their technical categories and characteristics.
Different ASTMs: This category is based on standard system (Grade), viscous tar category AASHTO and D 09 -3381 and applicable according to definition of the methods like ASTM.
Standard 8-226 defines and nominate the categories, those categories are based on M absolute gravity within 60 centigrade degrees or kinematic gravity with 135 centigrade degrees.
Packing
- Drum
- Bulk
- Jumbo Bag
Analyze
| Test | Test Method | VG10 | VG20 | VG30 | VG40 |
|---|---|---|---|---|---|
| Absolute viscosity at 60ºC | IS 1206 (Part 2) | Min 800 | Min 1600 | Min 2400 | Min 3200 |
| Kinematic viscosity at 135ºC | IS 1206 (Part 3) | Min 250 | Min 300 | Min 350 | Min 400 |
| Flash point ºC | IS 1209 | Min 220 | Min 220 | Min 220 | Min 220 |
| Solubility in trichlorethylene | IS 1206 | Min 99 | Min 99 | Min 99 | Min 99 |
| Softening point ºC | IS 1205 | Min 40 | Min 40 | Min 40 | Min 40 |
| Penetration at 25ºC ,0.1 mm 100gm, 5 sec | IS 1203 | 80-100 | 60-80 | 50-70 | 40-60 |
| Tests on residue from thin film oven tests/RTFOT | |||||
| Viscosity ratio at 60ºC | IS 1206 (Part 2) | Max 4.0 | Max 4.0 | Max 4.0 | Max 4.0 |
| Ductility at 25º/after thin film oven test | IS 1208 | Min 75 | Min 50 | Min 40 | Min 25 |