| Vol % Rubber | Density (kg/m3) | % Weight decrease |
| 0 | 1307.47 | 0.0 |
| 5 | 1300.03 | 0.6 |
| 10 | 1292.31 | 1.2 |
| 15 | 1283.67 | 1.8 |
| 20 | 1271.39 | 2.8 |
| 25 | 1262.63 | 3.4 |