Bitumen is graded based on absolute viscosity at 60 ºC or kinematic viscosity at 135 ºC. The SI physical unit of dynamic viscosity is Poise, and kinematic viscosity is expressed in Centi-Stokes. Pure bitumen has been graded based on AASHTO-M226 and ASTM-D3381 standards. Tables 1-1 to 1-6 indicate tests and criteria.
| Test | Viscosity | ||||
|---|---|---|---|---|---|
| AR-10 | AR-20 | AR-40 | AR-80 | AR-160 | |
| Viscosity at 60°C | 1000±250 | 2000±500 | 4000±1000 | 8000±2000 | 16000±4000 |
| Viscosity at 135°C | 140 | 200 | 275 | 400 | 550 |
| Penetration at 25°C, 100 grams, five seconds | 65 | 40 | 25 | 20 | 20 |
| Penetration at 25°C, 100 grams, five seconds, minimum | – | 40 | 45 | 50 | 52 |
| Ductility at 25°C, 5cm/min | 100 ** | 100 ** | 75 | 75 | 75 |
| Test on Primary Bitumen | |||||
| Flash Point, Cleveland open cup | 205 | 219 | 227 | 232 | 238 |
| Solubility in trichlorethylene | 99/0 | 99/0 | 99/0 | 99/0 | 99/0 |
| Test | Viscosity | |||||
|---|---|---|---|---|---|---|
| AC-2/5 | AC-5 | AC-10 | AC-20 | AC-30 | AC-40 | |
| Viscosity at 60°C | 250±0 | 500±100 | 1000±200 | 2000±400 | 3000±600 | 4000±800 |
| Viscosity at 135°C | 125 | 175 | 250 | 300 | 350 | 400 |
| Penetration at 25°C, 100 grams, five seconds | 220 | 140 | 80 | 60 | 50 | 40 |
| Flash Point, Cleveland open cup | 163 | 177 | 219 | 232 | 232 | 232 |
| Solubility in trichlorethylene | 99/0 | 99/0 | 99/0 | 99/0 | 99/0 | |
| Test on the residue of bitumen layer | ||||||
| Heating loss | – | 1/0 | 0/5 | 0/5 | 0/5 | 0/5 |
| Viscosity at at 60°C | 1000 | 2000 | 4000 | 8000 | 12000 | 16000 |
| Ductility at 25°C, 5cm/min | 100 ** | 100 | 75 | 50 | 40 | 25 |
| Stain Test | ||||||
| Naphta Solvent | Negative | |||||
| Naphta-Xylene Solvent, Xylene Percentage | Negative | |||||
| Test | Viscosity | ||||
|---|---|---|---|---|---|
| AR-1000 | AR-2000 | AR-4000 | AR-8000 | AR-16000 | |
| Viscosity at 60°C | 1000±250 | 2000±500 | 4000±1000 | 8000±2000 | 16000±4000 |
| Viscosity at 135°C | 140 | 200 | 275 | 400 | 550 |
| Penetration at 25°C, 100 grams, five seconds | 65 | 40 | 25 | 20 | 20 |
| Penetration at 25°C, 100 grams, five seconds, minimum | 40 | 40 | 45 | 50 | 52 |
| Ductility at 25°C, 5cm/min | 100 ** | 100 ** | 75 | 75 | 75 |
| Test on Primary Bitumen | |||||
| Flash Point, Cleveland open cup | 205 | 219 | 227 | 232 | 238 |
| Solubility in trichlorethylene | 99/0 | 99/0 | 99/0 | 99/0 | 99/0 |
| Test | Viscosity | ||||
|---|---|---|---|---|---|
| AC-2/5 | AC-5 | AC-10 | AC-20 | AC-40 | |
| Viscosity at 60°C | 250±0 | 500±100 | 1000±200 | 2000±400 | 4000±800 |
| Viscosity at 135°C | 80 | 110 | 150 | 210 | 300 |
| Penetration at 25°C, 100 grams, five seconds | 200 | 120 | 70 | 40 | 20 |
| Flash Point, Cleveland open cup | 163 | 177 | 219 | 232 | 232 |
| Solubility in trichlorethylene | 99/0 | 99/0 | 99/0 | 99/0 | 99/0 |
| Test on the Residue of bitumen layer | |||||
| Viscosity at at 60°C | 1250 | 2500 | 5000 | 10000 | 20000 |
| Ductility at 25°C, 5cm/min | 100 ** | 100 | 50 | 20 | 10 |
| Test | Viscosity | |||||
|---|---|---|---|---|---|---|
| AC-2/5 | AC-5 | AC-10 | AC-20 | AC-30 | AC-40 | |
| Viscosity at 60°C | 250±0 | 500±100 | 1000±200 | 2000±400 | 3000±600 | 4000±800 |
| Viscosity at 135°C | 125 | 175 | 250 | 300 | 350 | 400 |
| Penetration at 25°C, 100 grams, five seconds | 220 | 140 | 80 | 60 | 50 | 40 |
| Flash Point, Cleveland open cup | 163 | 177 | 219 | 232 | 232 | 232 |
| Solubility in trichlorethylene | 99/0 | 99/0 | 99/0 | 99/0 | 99/0 | 99/0 |
| Test on the Residue of bitumen layer | ||||||
| Viscosity at at 60°C | 1250 | 2500 | 5000 | 10000 | 15000 | 20000 |
| Ductility at 25°C, 5cm/min | 100 ** | 100 | 75 | 50 | 20 | 10 |
| Test | Viscosity | ||||
|---|---|---|---|---|---|
| AR-1000 | AR-2000 | AR-4000 | AR-8000 | AR-16000 | |
| Viscosity at 60°C | 1000±250 | 2000±500 | 4000±1000 | 8000±2000 | 16000±4000 |
| Viscosity at 135°C | 140 | 200 | 275 | 400 | 550 |
| Penetration at 25°C, 100 grams, five seconds | 65 | 40 | 25 | 20 | 20 |
| Penetration at 25°C, 100 grams, five seconds, minimum | 40 | 40 | 45 | 50 | 52 |
| Ductility at 25°C, 5cm/min | 100 ** | 100 ** | 75 | 75 | 75 |
| Test on Primary Bitumen | |||||
| Flash Point, Cleveland open cup | 205 | 219 | 227 | 232 | 238 |
| Solubility in trichlorethylene | 99/0 | 99/0 | 99/0 | 99/0 | 99/0 |
