CRMB Grades

Asphalt cement grade of bitumen is one of the main categories of viscosity grade bitumen in which the viscosity of the standard bitumen is measured at 60 ºC (140 ºF) in units of 100 poises. AC grading specifies asphalt binder properties prior to the hot mix asphalt (HMA) production process. Hence, it should provide a more accurate representation of how asphalt binder behaves within HMA pavements.