Oxidized (Blown) Bitumen 75/25
Oxidized Bitumen 75/25, also known as blown bitumen, is a high-performance bituminous material produced by blowing air through paving-grade bitumen at elevated temperatures. This process increases the softening point and decreases the penetration value, resulting in a harder and more durable product. It exhibits excellent resistance to deformation under high temperatures, superior adhesion to aggregates, and enhanced waterproofing properties. Oxidized Bitumen 75/25 is commonly used in roofing, industrial waterproofing, and paving applications where higher thermal stability and mechanical strength are required. Its low loss on heating and good solubility in solvents ensure reliable performance during storage, handling, and application.
| Oxidized Bitumen 75/25 Specifications | |||
|---|---|---|---|
| Characteristics | Test Method | Unit | Result |
| Specific Gravity at 25°C | ASTM D70 | – | 1.01 – 1.06 |
| Penetration at 25°C, 100g, 5s | ASTM D5 | 0.1 mm | 10 / 30 |
| Softening Point | ASTM D36 | °C | 65 / 85 |
| Loss on Heating | ASTM D6 | wt.% | 0.2 max |
| Flash Point | ASTM D92 | °C | 250 min |
| Solubility in CS2 | ASTM D2042 | wt.% | 80% min |
| Ductility at 25°C | ASTM D113 | cm | 1.5 min |
