The quality of bitumen used in road paving projects can vary depending on the specific requirements of the project. However, the following grades of bitumen are commonly used for road paving and are known for their high quality:
Penetration Grade Bitumen (PG) – This is the most commonly used type of bitumen for road paving projects, and it is graded based on the depth to which a standard needle penetrates the sample at a specified temperature.
Performance Grade Bitumen (PG) – This type of bitumen is designed to meet specific performance requirements such as temperature susceptibility, rutting resistance, and fatigue resistance.
Polymer Modified Bitumen (PMB) – This type of bitumen is modified with polymers to improve its performance characteristics, particularly its resistance to temperature and aging.
Cutback Bitumen – This type of bitumen is produced by dissolving bitumen in a solvent, making it easier to handle and apply.
Ultimately, the best type of bitumen for a specific road paving project will depend on a variety of factors, including the local climate, traffic volume, and the specific requirements of the road surface. It is best to consult with a bitumen expert or a road construction contractor to determine the best type of bitumen for your project.