Table 12 t-Test results for fracture toughness of HMA with PG 58–22 bitumen and nanomaterials.
Condition | Aggregate type | Assumption | Levene’s test for equality of variances | t-test for equality of means | |||
|---|---|---|---|---|---|---|---|
F | Sig | t | df | Sig. (2-tailed) | |||
PG 58–22 + 0.3% CNT | Limestone | Equal variances assumed | 0.061 | 0.810 | −2.555 | 10 | 0.029 |
Equal variances not assumed | - | - | −2.555 | 9.778 | 0.029 | ||
PG 58–22 + 0.6% CNT | Limestone | Equal variances assumed | 0.320 | 0.584 | −4.784 | 10 | 0.001 |
Equal variances not assumed | - | - | −4.784 | 9.715 | 0.001 | ||
PG 58–22 + 0.3% NGO | Limestone | Equal variances assumed | 0.275 | 0.611 | −3.673 | 10 | 0.004 |
Equal variances not assumed | - | - | −3.673 | 9.723 | 0.005 | ||
PG 58–22 + 0.6% NGO | Limestone | Equal variances assumed | 0.343 | 0.571 | −5.852 | 10 | 0.000 |
Equal variances not assumed | - | - | −5.852 | 9.689 | 0.000 | ||
PG 58–22 + 0.3% CNT | Siliceous | Equal variances assumed | 0.070 | 0.796 | −1.648 | 10 | 0.130 |
Equal variances not assumed | - | - | −1.648 | 9.765 | 0.131 | ||
PG 58–22 + 0.6% CNT | Siliceous | Equal variances assumed | 0.047 | 0.833 | −2.701 | 10 | 0.022 |
Equal variances not assumed | - | - | −2.701 | 9.952 | 0.022 | ||
PG 58–22 + 0.3% NGO | Siliceous | Equal variances assumed | 0.234 | 0.639 | −1.872 | 10 | 0.091 |
Equal variances not assumed | - | - | −1.872 | 9.219 | 0.093 | ||
PG 58–22 + 0.6% NGO | Siliceous | Equal variances assumed | 0.259 | 0.622 | −3.897 | 10 | 0.003 |
Equal variances not assumed | - | - | −3.897 | 9.517 | 0.003 | ||
