Penetration Grade Bitumen Paving Grade Bitumen

Penetration Grade Bitumen is a standard bitumen usually used as a Paving Grade Bitumen essential for road construction and for the production of asphalt pavements with superior properties, and it’s very important once it bounds the aggregates and creates a unique cohesion and stability to the bituminous mix.

The penetration of an actual sample of the bitumen in any grade should fall between the lower and upper value given

Penetration Grading Basic

Assumption is that the less viscous the asphalt, the deeper the needle will penetrate. This penetration depth is empirically correlated with asphalt binder performance. Therefore, asphalt binders with high penetration numbers (called “soft”) are used for cold climates while asphalt binders with low penetration numbers (called “hard”) are used for warm climates.

Ziggurat Oil Supplies Penetration Graded Bitumen Grades in correspondence to ASTM D946-09 including: