STIFF RUBBER BITUMEN
The ingredients Vacuum Bottom (VB) and Vacuum Silabes (VS) are aerated in bitumen production reactors at a certain pressure and temperature (200-300 °C), promoting reactions between the hydrogen atoms in the bitumen and oxygen from the air to produce heavier hydrocarbons—with a lower penetration grade and a higher softening point than the original untreated bitumen—through polymerization. Such bitumen features a softening point of 85 and a penetration of 25.
Application: Coating the bottom of water channels, covering up the cracks and filling the fissures on concrete structures, other construction applications, producing moisture insulation.
Bitumen 30-75
| TEST | METHODS | LIMIT | |
| MIN | MAX | ||
| Penetration 1/10mm | ASTM D 5 | 35 | 45 |
| Softening Point ºc | ASTM D 36 | 80 | 90 |
| Ductility @25ºc cm | ASTM D 113 | 20 | |
| Loss on heating wt% | ASTM D 6 | 0.2 | |
| Drop in Penetration % | ASTM D 5 | 20 | |
| Flash Point ºc | ASTM D 92 | 250 | |
