Bitumen 35/50

Description

Bitumen 35/50 refers to a paving grade bitumen classified by its penetration grade.

What is Bitumen 35/50 means

• The numbers 35/50 indicate the penetration value range (measured in 0.1 mm).
• It means a standard needle penetrates the bitumen 35 to 50 tenths of a millimeter under specific conditions (25 °C, 100 g load, 5 seconds).
• Lower penetration is harder bitumen.

Characteristics

• Harder and stiffer compared to grades like 50/70 or 70/100.
• Higher softening point, meaning it performs better in hot climates or under heavy traffic.
• Provides improved rutting resistance.

Main Uses

• High-load road applications
• Hot and warm climates
• Base and binder layers in asphalt
• Industrial applications requiring stiff bitumen

Technical Specs (approx.)

• Penetration: 35–50 (0.1 mm)
• Softening point: ~50–58 °C
• Viscosity at 135 °C: ≥ 0.3 Pa·s
• Flash point: ≥ 230 °C