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Bitumen Class 170, 320 & 600

Class 170 is widely used in sprayed sealing and light asphalt applications to provide durability and fatigue resistance. It is also used to manufacture cutback bitumen, bitumen emulsions and modified bitumen. Class 320 is most commonly used to manufacture asphalt mixes while Class 600 is primarily used to manufacture extra heavy-duty asphalt pavements that need to endure substantial traffic loadings.

PROPERTY

RANGE

 

Class 170

Class 320

Class 600

Viscosity at 60oC, pa.s

170

320

600

Viscosity  at 135oC Pa.s

0.40

0.53

0.80

Viscosity at 60oC after RTFO, Pa.s

300

640

1300

Penetration at 25oC, dmm

70

46

27

Flashpoint, oC

360

360

360

Viscosity of Residue at 60oC % of original

180

200

215

Density at 15oC, kg/m3

1.04

1.04

1.04