| Fiber | Length lf (mm) | Diameter df (mm) | Tensile strength σf (MPa) | Density (g/cm3) | |
| Steel fiber | 30 | 500 | 1196 | 7.9 | |
| PVA fiber | REC15 | 12 | 40 | 1600 | 1.3 |
| RF4000 | 30 | 660 | 900 | 1.3 | |