Viscosity Grade Bitumen 40 Description
Viscosity grade of bitumens are categorized according to Viscosity (degree of fluidity) grading. The higher the grade, the stiffer the Bitumen. In Viscosity Grade, Viscosity tests are conducted at 60°C and 135°C, which represents the temperature of road surface during summer and mixing temperature respectively. The penetration at 25°C, which is annual average pavement temperature, has been also retained in Specifications.
Viscosity Grade Bitumen 40 is used in highly stressed areas such as intersections, near toll booths and truck parking lots in lieu of old 30/40 Penetration grade. Due to its higher viscosity, stiffer Bitumen mixes can be produced to improve resistance to shoving and other problems associated with higher temperature and heavy traffic loads.
Viscosity Grade Bitumen 40 Applications
Viscosity Grade Bitumen 40 (Asphalt) is a standard grade Bitumen usually used as a Paving Grade Bitumen suitable for road construction and for the production of asphalt pavements with superior properties. This grade of Bitumen is mainly used in the manufacture of hot mix asphalt for bases and wearing courses and possesses characteristics and qualities unique sand quite different from other agents. They achieve very flexible and tenacious connections with other materials due mainly to viscoelastic response of bitumen, which behavior depends on how fast charges are applied. Viscosity Grade Bitumen supplied by Huei Jie Oil is petroleum grade bitumen, manufactured from fractional / vacuum distillation of crude oil, which practical appliance and behavior vary according to its temperature. The Bitumen supplied by Huei Jie Oil is produced from the vacuum residue (short residue) feedstock. Viscosity Grade bitumens are specified by the methods described in ASTM Standard D3381–09 and AASHTO M226-80 (2008). Viscosity Graded specifications cover bitumen (asphalt) graded by Viscosity at 60 C (140 °F).
Used in ;
New Steel Drum, Bulk, and other packings based on the customers’ demands.
Specification of Viscosity Grade Bitumen 40
|Absolute Viscosity, 60°C, poises, min||3200|
|Kinematic Viscosity, 135°C, CST, min||400|
|Flash point, C, min||220|
|Solubility in trichloroethylene, %, min||99.0|
|Penetration at 25°C||40-60|
|Softening point, C, min||50|
|Viscosity ratio at 60°C, max||4.0|
|Ductility at 25°C, cm, min, (after thin film over test)||25|