Research Article
Utilization of Recycled Concrete Aggregates in Stone Mastic Asphalt Mixtures
Table 2
Properties of aggregates.
| | Test | Method | Granite | RCA | Standard requirement |
| | LA abrasion (%) | ASTM C131 | 18.3 | 24.5 | Below 30% | | Aggregate impact value (%) | BS812: Part 3 | 6.21 | 11.3 | Below 15% | | Aggregate crushing value (%) | BS812: Part 3 | 20.8 | 28.3 | Below 30% | | Flakiness index (%) | BS812: Part 3 | 7.90 | 9.80 | Below 20% | | Angularity number | BS812: Part 3 | 6.31 | 8.40 | Between 6 to 9 | | Elongation index (%) | BS812: Part 3 | 8.10 | 5.35 | Below 20% | | Polished stone value (%) | BS812: Part 3 | 50.7 | 57.3 | Above 40% | | Specific gravity of coarse aggregates (%) | ASTM C 127-07 | 2.61 | 2.18 | — | | Specific gravity of fine aggregates (%) | ASTM C 128-07 | 2.64 | 2.42 | — | | Water absorption of coarse aggregates (%) | ASTM C 127-07 | 0.44 | 2.69 | — | | Water absorption of fine aggregates (%) | ASTM C 128-07 | 1.11 | 4.28 | — |
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