Bitumen types | Softening Point (˚C) | Cone Penetration at 25˚C (mm) | Viscosity (cP) at 50 RPM | Elastic Recovery at 25˚C (%) | ||
135˚C | 165˚C | 177˚C | ||||
Pen 60/70 | 49.5 | 65 | 310 | - | - | 55 |
Pen 60/70 + 5% (0.0526 kg) of crumb rubber | 53 | 55 | 765 | - | - | 54 |
Pen 60/70 + 10% (0.111 kg) of crumb rubber | 54.5 | 53.5 | 965 | - | - | 52 |
Pen 60/70 + 15% (0.176 kg) of crumb rubber | 55 | 50 | 2490 | 665 | 540 | 50 |
Pen 60/70 + 20% (0.250 kg) of crumb rubber | 60 | 40 | N/A | 1620 | 1280 | 43 |
Pen 60/70 + 25% (0.333 kg) of crumb rubber | 64 | 44 | N/A | 2645 | 2125 | 45.7 |
PG 76 | 85 | 49.7 | 2215 | 570 | 380 | 90 |