Viscosity Grade Bitumen 20 Description
Viscosity grade bitumen 20 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 the road surface during summer and mixing temperature respectively. The penetration at 25°C, which is the annual average pavement temperature, has been also retained in Specifications.
Viscosity Grade Bitumen 20 is used for paving in cold climate & high altitude regions.
Viscosity Grade Bitumen 20 Applications
Viscosity Grade Bitumen (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 the viscoelastic response of bitumen, which behavior depends on how fast charges are applied. Viscosity Grade Bitumen supplied by Tavoil 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 Tavoil 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.
|Absolute Viscosity, 60°C, poises, min||1600|
|Kinematic Viscosity, 135°C, CST, min||300|
|Flash point, C, min||220|
|Solubility in trichloroethylene, %, min||99.0|
|Penetration at 25°C||60-80|
|Softening point, C, min||45|
|Viscosity ratio at 60°C, max||4.0|
|Ductility at 25°C, cm, min, (after thin film over test)||50|