Volume fraction of steel fiber | Tensile strength at early cracking (MPa) | Ultimate tensile strength (MPa) | ||
1% | Mean | 12.4 | Mean | 12.1 |
Std. deviation | 0.7 | Std. deviation | 0.7 | |
2% | Mean | 11.9 | Mean | 13.0 |
Std. deviation | 2.4 | Std. deviation | 1.4 |