| Fibre content (%) | Compressive strength of speciments at 28 days of curing | Mean | STDEV | |||
| 3N-PALF | 3T-PALF | 5N-PALF | 5T-PALF | |||
| 0 | 2.91 | 2.91 | 3.04 | 3.04 | 2.975 | 0.06 |
| 1 | 2.43 | 2.34 | 3.36 | 3.89 | 3.005 | 0.65 |
| 2 | 2.98 | 3.38 | 3.58 | 3.88 | 3.455 | 0.33 |
| 3 | 3.19 | 4.01 | 4.63 | 4.81 | 4.16 | 0.63 |
| 4 | 2.39 | 3.26 | 3.14 | 3.31 | 3.025 | 0.37 |
| 5 | 2.19 | 2.92 | 2.83 | 3.01 | 2.7375 | 0.32 |