Bitumen

Bitumen is classified in 5 categories as below:

Penetration Grade Bitumen: These grades of bitumen are classified due to their level of hardness. Penetration grades of bitumen are bitumen 30/40, 60/70, 80/100, and 100/120. To identify various grades of penetration bitumen, we enter a standard needle into our sample and see how deep it can go within a given time.

Viscosity Grade Bitumen: These types of bitumen are the result of a highly accurate system of classifying bitumen. After producing bitumen, we test them and measure their level of viscosity. This testing system introduces four VG grades, including VG10, VG20, VG30, and VG40. The higher the number, the harder the bitumen in the viscosity grading system.

Cutback Bitumen: Cutback bitumen is produced by adding solvents to bitumen, in order to decrease the viscosity level. This procedure involves the addition of controlled amounts of petroleum extracts such as kerosene, naphtha, diesel oil, and furnace oil to bitumen. Cutback bitumen doesn’t need heating.