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Penetration Grade Bitumen

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Penetration grade bitumen is classified based on its hardness or softness as determined by the depth to which a standard needle can penetrate the bitumen under specific conditions (temperature, load, and time).

 

- Grades: Common grades include 30/40, 40/50, 60/70, and 80/100.

- Uses:

  - 30/40 and 40/50: These are harder grades typically used in tropical regions with high temperatures or in heavy traffic areas.

  - 60/70 and 80/100: These are softer grades commonly used in temperate climates for road construction and surfacing.

- Benefits: Penetration grade bitumen is versatile and widely used for various paving applications, offering a balance between viscosity and flexibility.