AC 20 Grade - Bitumen Supply
For instance, AC-5 means the bituminous asphalt cement has viscosity of 500 poises at 60°C. The number after AR indicated viscosity in poises at 60 °C. Common viscosity grades asphalt cement are AC-2.5,AC-5,AC-10,AC-20, AC-30,AC-40. AC 20 is a designed bituminous asphalt which is mostly used in hot climate because the viscosity is high.