Definition of bitumen 40
Bitumen 40 is made from bitumen 60 and it is a soft grade oxidized bitumen that should be packed in the steel drum. It is flexible as it have a high softening point. This type of asphalt is useful to use in road construction to keep the asphalt stable in hot season.
Uses of bitumen 40
- For underground moisture and waterproofing works.
- For the use in nuclear power engineering, pipeline engineering, bottom anti-corrosion, asphalt production.
- For the manufacturing of waterproofing membrane, moisture-proof paper production.
- For anti-corrosion paint.
- Used for road and bridge caulking purposes.
Technical specification of bitumen 40
| Technical indicators | Bitumen 40 |
| Penetration (25 °C, 100g, 5s) / (0.1 mm) | 10-35 |
| The ductility (25 °C, 5cm / min) / cm is not less than | 2.5 |
| Softening point (ball method) / °C not less than | 75 |
| Solubility (trichloroethylene) /% is not less than | 99.5 |
| Evaporation loss (163 ° C, 5 h) /% no more than | 1 |
| After evaporation, the penetration ratio (25 °C) /% is not less than | 65 |
| Flashpoint (open cup) / °C not less than | 230 |
| Brittle / °C | report |
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