General description of Bitumen 40/60
Bitumen penetration grade 40/60 is semi-hard penetration grade bitumen used as a paving grade bitumen which is suitable for road construction and repair. This unique temperature-viscosity relationship is important when determining the performance parameters such as the adhesion, rheology, durability, and application temperatures of bitumen. bitumen is a standard Penetration Grade of Bitumen ASTM D946M, typically used as a Paving Grade Bitumen suitable for road construction and for the production of asphalt pavements with superior properties particularly in road and airport constructions and other similar applications. Penetration grade Blown Asphalt 40/60 has penetration between 40~50 desi-millimeter and the softening point between 52 ~ 60C. The penetration grade bitumen 40/60 has a thermoplastic property which is like synthetic resin material which gets softer with heating and hardens when cooled. This grade of Asphalt 40/50 has a very strong viscosity compared to other grades.
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Application of Bitumen 40/60
This grade of Bitumen is also mainly used in the manufacture of hot mix asphalt. also, Bitumen is suitable for road construction and repair for asphalt pavements with superior properties. Bitumen is used for hot mixed asphalt because of the properties of very strong viscosity compared to other grades. Also used in specialized applications like airport runways and also in very heavy traffic volume roads in coastal cities in the country.
Guaranty of Bitumen 40/60
The quality of bitumen penetration grade with the arrangement of the international inspector to check the quality and quantity of the bitumen penetration grade during the loading to the vessel and control the production by QC by batch test report before shipping.
Packing of Bitumen 40/60
Bitumen grade is commonly packed in new steel drums, 150, 180 & 220 Kg barrels and Jumbo Bags or Bitubag and 10 & 20kg Tubular cartons.
Specification of Bitumen grade 40/60
| Bitumen 40/60 | Test method | Unit | Specification |
| Penetration – 25°C, 100g, 5s | EN 1426 | mm | 40-60 |
| Softening Point (Ring & Ball) | EN 1427 | °C | 48/56 |
| Kinematic Viscosity @ 135⁰C | EN 12595 | mm²/s | 325 Min |
| Solubility in Xylene | EN 12592 | % | 99 Min |
| Flashpoint (Cleveland Open) | EN 22592 | °C | 230 Min |
| Recistance to Hardening at 163 °C | |||
| Change in mass (m/m) | EN12607-1 | % | 0.5 Max |
| Retained Penetration 25°C, 100g, 5s (% of original) | EN 1426 | % | 50 Min |
| Increase in softening point | EN 1427 | °C | 11 Max |
