| El tamaño | La densidad aparente | Número | Superficie | Volumen libre |
| (Mm) | (Kg/m3). | (Por m3). | (M2/m3). | (%) |
| 16*16*0.3 | 360 | 201000 | 346 | 95.5 |
| 25*25*0.4 | 302 | 51000 | 212 | 96.2 |
| 25*25*0,5 | 400 | 51000 | 216 | 95 |
| 25*25*0.6 | 461 | 51000 | 219 | 94.2 |
| 38*38*0.4 | 218 | 15000 | 143 | 97.2 |
| 38*38*0.5 | 262 | 15180 | 145 | 96.7 |
| 38*38*0.6 | 328 | 15000 | 146 | 95.9 |
| 50*50*0.5 | 194 | 6500. | 106 | 97.5 |
| 50*50*0.8 | 315 | 6500. | 108 | 96.4 |
| 50*50*0.9 | 365 | 6500. | 109 | 95.4 |
| 76*76*0.8 | 205 | 1830 | 69 | 97.4 |
| 90*90*1.0 | 229 | 1160 | 62 | 97.1 |