Research Article
Laboratory Evaluation of Aging Behaviour of SBS Modified Asphalt
Table 6
Correlation of microstructure indexes, toughness, and tenacity with aging temperature.
| Aging time | Microindexes | Macroindexes | Correlation coefficient | Significance |
| TFOT 3 h | Area | Toughness | 0.988 | 0.097 | Tenacity | 0.995 | 0.052 | Area ratio | Toughness | 0.985 | 0.111 | Tenacity | 0.994 | 0.039 |
| TFOT 5 h | Area | Toughness | 0.979 | 0.129 | Tenacity | 0.947 | 0.210 | Area ratio | Toughness | 0.989 | 0.095 | Tenacity | 1 | 0.015 |
| TFOT 7 h | Area | Toughness | 0.958 | 0.186 | Tenacity | 0.992 | 0.076 | Area ratio | Toughness | 0.970 | 0.156 | Tenacity | 0.996 | 0.047 |
| TFOT 10 h | Area | Toughness | 0.996 | 0.054 | Tenacity | 0.997 | 0.051 | Area ratio | Toughness | 0.971 | 0.154 | Tenacity | 0.997 | 0.049 |
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