Bitumen C170 | Class 170 bitumen
Australian Standard Bitumen C170 is a penetration-grade paving bitumen designed for road construction and infrastructure applications that require consistent performance under varying traffic loads and weather conditions. It is produced through controlled refining processes to achieve stable physical and rheological properties, ensuring reliable workability during mixing, laying, and compaction. This grade of bitumen offers excellent adhesion to aggregates and forms a durable, waterproof binder that helps protect pavement layers from moisture damage and premature aging.
This material is manufactured in accordance with Australian standards to meet strict limits for viscosity, penetration, flash point, and purity. Its balanced stiffness and flow characteristics make it suitable for heavy-duty pavements while maintaining flexibility to resist cracking. With strong resistance to oxidation and good storage stability, Australian Standard Bitumen C170 supports long service life, reduced maintenance costs, and improved overall pavement performance.
| Australian Standard Bitumen C170 Specifications | ||||
|---|---|---|---|---|
| Specification | Test Method | Unit | Min. | Max. |
| Specific Gravity 25°C | ASTM D70 | – | 1.01 | 1.06 |
| Penetration at 25°C | ASTM D5 | 0.1 mm | 62 | – |
| Viscosity at 60°C | ASTM D2171 | Pa.s | 140 | 200 |
| Viscosity at 135°C | ASTM D2170 | cSt | 0.25 | 0.45 |
| Flash Point (COC) | ASTM D92 | °C | 250 | – |
| Matter Insoluble in Trichloroethylene | ASTM D4072 | %wt | – | 1 |
| After Rolling Thin Film Oven Test (RTFO) | ||||
| Viscosity of Residue at 60°C | ASTM D2171 | % of original | – | 300 |
