Research Article
Effects of Crumb Rubber Size and Concentration on Performance of Porous Asphalt Mixtures
Table 2
Test results on aggregate specific gravity and absorption properties.
| Properties | Course aggregate | Fine aggregate | Filler |
| Bulk specific gravity | 2.586 | 2.639 | ā | Apparent specific gravity | 2.735 | 2.763 | 2.782 | Water absorption (%) | 2.1 | 1.7 | ā |
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