Oxidized Bitumen (Blown Bitumen)

High Softening Point for Industrial Use

Oxidized Bitumen (also known as Blown Bitumen) is produced by blowing air through the hot penetration grade bitumen under controlled temperature conditions. This oxidation process increases the bitumen’s hardness, reduces its temperature susceptibility, and significantly raises its softening point and elasticity. This makes it unsuitable for paving but ideal for industrial non-pavement applications.

Key Features & Applications :

Definition

Classified by its softening point and penetration value (e.g., R 85/25, R 115/15).

Key Property

High softening point, meaning it resists flow and creep at higher temperatures.

Primary Use

Roofing and Waterproofing (felt saturation and adhesives), pipe coating, insulating mastics, and other protective coatings.

Benefit

Provides excellent stability, durability, and adhesion in static industrial applications.