Oxidized (Blown) Bitumen 85/25
Oxidized Bitumen 85/25 is a high-quality binder commonly used in road construction and industrial applications requiring enhanced hardness and temperature stability. It has a specific gravity of 1.01–1.06 at 25 °C, indicating a dense and durable material. The penetration value of 10–30 (0.1 mm) at 25 °C demonstrates its firm consistency, while the softening point range of 70–90 °C ensures resistance to deformation under high temperatures.
This bitumen shows minimal weight loss on heating (max 0.2 wt.%), confirming its thermal stability during mixing and paving operations. Its high flash point (≥250 °C) ensures safe handling and processing. Additionally, it is highly soluble in carbon disulfide (≥80 %), guaranteeing compatibility with additives and other paving materials. The ductility at 25 °C is a minimum of 3 cm, providing adequate flexibility to resist cracking under stress.
Overall, Oxidized Bitumen 85/25 offers an ideal balance of hardness, thermal stability, and flexibility for paving, roofing, and industrial applications.
| Oxidized Bitumen 85/25 Specification | |||
|---|---|---|---|
| Characteristics | Test Method | Unit | Result |
| Specific Gravity at 25°C | ASTM D70 | – | 1.01–1.06 |
| Penetration at 25°C, 100g, 5s | ASTM D5 | 0.1mm | 10/30 |
| Softening Point | ASTM D36 | °C | 70/90 |
| 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 | 3 min |
