Bitumen
Bitumen Bitumen is primarily used to pave roads. It is a brown or black mixture of hydrocarbons, which is derived from petroleum. The consistency of bitumen varies from viscous to solid, and in its solid form, it is commonly known as asphalt.
Product description
Performance Grade (PG)
PG is the latest standard of the day. This relatively new method classified bitumen is based on varying temperatures. It is a fully scientific method studying the mechanical specifications of bitumen. In this method, a temperature range is defined for bitumen and the consumer can easily choose the desired product.
Having installed SHRP systems, Pasargad Oil Company is capable of selling bitumen to its customers based on PG method.
Today, a PG is defined for polymer modified bitumen and pure bitumen based on environmental conditions and temperature. A wider PG range means higher resistance and more favorable specifications. Pasargad Oil Company has the capacity to produce all these grades. This company first conducted climate zoning in Iran to specify the appropriate bitumen for different geographical zones.
PG Bitumen
High Temperature Performance | Low Temperature Performance
|
PG 46 | -34, -40,-46 |
PG 52 | -10, -16, -22, -28, -34,-40,-46 |
PG 58 | -10, -16, -22, -28, -34, -40 |
PG 64 | -10, -16, -22, -28, -34, -40 |
PG 70 | -10, -16, -22, -28, -34, -40 |
PG 76 | -10, -16, -22, -28, -34 |
PG 82 | -10, -16, -22, -28, -34 |
· Viscosity Grade
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 CentiStokes. Pure bitumen has been graded based on AASHTO-M226 and ASTM-D3381 standards.
Table 1-1: Technical Specifications of Pure Bitumen Based on Viscosity at 60 oC (AASHTO-M226)
| 5/2 AC- | 5 AC- | 10 AC- | 20 AC- | 40AC- |
Viscosity at 60 C | 50±250 | 100±500 | 200±1000 | 400±2000 | 800±4000 |
Viscosity at 135 C | 80 | 110 | 150 | 210 | 300 |
Penetration at 25 C, 100 grams, five seconds | 200 | 120 | 70 | 40 | 20 |
| 163 | 177 | 219 | 232 | 232 |
Solubility in trichloroethylene | 0/99 | 0/99 | 0/99 | 0/99 | 0/99 |
Test on the residue of thin bitumen layer |
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Viscosity at 60 C | 1000 | 2000 | 4000 | 8000 | 16000 |
Ductility at 25 C, 5cm/min | (1)100 | 100 | 50 | 20 | 10 |
Stain Test |
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Naphtha Solvent | Negative | ||||
Naphtha-Xylene Solvent, Xylene Percentage | Negative | ||||
Naphtha-Xylene Solvent, Xylene Percentage | Negative |
Table 1-2: Technical Specifications of Pure Bitumen Based on Viscosity at 60 oC (AASHTO-M226)
Test | Viscosity | |||||
5/2 AC- | 5 AC- | 10 AC- | 20 AC- | 30AC- | 40AC- | |
Viscosity at 60 C | 50±250 | 100±500 | 200±1000 | 400±2000 | 600±3000 | 800±4000 |
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 trichloroethylene | 0/99 | 0/99 | 0/99 | 0/99 | 0/99 | 0/99 |
Test on the residue of thin bitumen layer | ||||||
Heating loss | - | 0/1 | 5/0 | 5/0 | 5/0 | 5/0 |
Viscosity at 60 C | 1000 | 2000 | 4000 | 8000 | 12000 | 16000 |
Ductility at 25 C, 5cm/min | (1)100 | 100 | 75 | 50 | 40 | 25 |
Stain Test | ||||||
Naphtha Solvent | Negative | |||||
Naphtha-Xylene Solvent, Xylene Percentage | Negative | |||||
Naphtha-Xylene Solvent, Xylene Percentage | Negative |
Table 1-3: Technical Specifications of Pure Bitumen Based on Viscosity at 60 oC (AASHTO-M226)
Test | Viscosity | ||||
10AR- | 20AR- | 40AR- | 80AR- | 160AR- | |
Viscosity at 60 C | 250±1000 | 500±2000 | 1000±4000 | 2000±8000 | 4000±16000 |
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 | (2)100 | (2)100 | 75 | 75 | 75 |
Test on Primary Bitumen | |||||
Flash point, Cleveland open cup | 205 | 219 | 227 | 232 | 238 |
Solubility in trichloroethylene | 0/99 | 0/99 | 0/99 | 0/99 | 0/99 |
Table 1-4: Technical Specifications of Pure Bitumen Based on Viscosity at 60 oC (AASHTO-M226)
Test | Viscosity | ||||
5/2AC- | 5AC- | 10AC- | 20AC- | 40AC- | |
Viscosity at 60 C | 50 ±250 | 100 ±500 | 200 ±1000 | 400 ±2000 | 800 ±4000 |
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 trichloroethylene | 0/99 | 0/99 | 0/99 | 0/99 | 0/99 |
Test on Residue | |||||
Viscosity at 60 C | 1250 | 2500 | 5000 | 10000 | 20000 |
Ductility at 25 C, 5cm/min | (1)100 | 100 | 50 | 20 | 10 |
Table 1-5: Technical Specifications of Pure Bitumen Based on Viscosity at 60 oC (AASHTO-M226)
Test | Viscosity | |||||
5/2AC- | 5AC- | 10AC- | 20AC- | 30AC- | 40AC- | |
Viscosity at 60 C | 50 ±250 | 100 ±500 | 200 ±1000 | 400 ±2000 | 600±3000 | 800 ±4000 |
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 trichloroethylene | 0/99 | 0/99 | 0/99 | 0/99 | 0/99 | 0/99 |
Test on the residue of thin bitumen layer | ||||||
Viscosity at 60 C | 1250 | 2500 | 5000 | 10000 | 15000 | 20000 |
Ductility at 25 C, 5cm/min | (1)100 | 100 | 75 | 50 | 20 | 10 |
Table 1-6: Technical Specifications of Pure Bitumen Based on Viscosity at 60 oC (AASHTO-M226)
Test on the residue of thin bitumen layer | Viscosity | ||||
1000AR- | 2000AR- | 4000AR- | 8000AR- | 16000AR- | |
Viscosity at 60 C | 250 ±1000 | 500±2000 | 1000 ±4000 | 2000±8000 | 4000 ±16000 |
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 | (1)100 | (2)100 | 75 | 75 | 75 |
Test on residue | |||||
Flash point, Cleveland open cup | 205 | 219 | 227 | 232 | 238 |
Solubility in trichloroethylene | 0/99 | 0/99 | 0/99 | 0/99 | 0/99 |
