Bitumen C450
Bitumen C450 Description
Bitumen C450 is a paving grade bitumen manufactured to comply with AS2008 Table 2.2 and is suitable for use in heavily trafficked asphalt.
Bitumen C450 Applications
C450 was originally a development from the Roads and Maritime Services in New South Wales and was incorporated into the 2012 revision of the national bitumen standard AS2008. C450 has been formulated to meet the viscosity requirements of AS2008 Table 2.2 whilst retaining excellent asphalt workability characteristics. The target applications are asphalt wearing courses and base courses for heavily trafficked pavements.
Asphalt recommendations
| Mixing Temperature | Holding time at Mixing Temperature | Medium term storage temperature | Medium term storage time | Maximum safe handling temperature |
| 165-175°C | 14 days | 130-150°C | 30 days | 190°C |
Health & safety
C450 is unlikely to present any significant health or safety hazard when properly used in the recommended application where good standards of industrial practice are maintained.
Further guidance on Product Health and Safety is available on the relevant Material Safety Data Sheet
Bitumen C450 Specifications
| Description | Units | Methods Typical | Results |
| Viscosity at 60° after RTFOT | Pa.s | AS 2341.2 | 750 – 1150 |
| Viscosity at 135° | Pa.s | AS 2341.2 | 0.7 max |
| Pen at 25° after RTFOT | dmm | AS 2341.12 | min 26 |
| Flashpoint | °C | AS 2341.14 | min 250 |
Bitumen, also known as asphalt in the United States, is a substance that forms through the distillation of crude oil. It has waterproofing and adhesive properties. Bitumen production through distillation removes lighter crude oil components, such as gasoline and diesel, leaving the “heavier” Asphalt behind. The producer often refines it several times to improve its grade.