Research Article
Pavement Manager at Risk in Construction of Hot Mix Asphalt
Table 1
Pavement life extension (years).
| | Maintenance treatment | Pavement life extension for TI > 6 | Treatment life for TI < 6 | | Good | Fair | Poor | Good | Fair | Poor | | Cracks < 5% | 5% < cracks < 20% | Cracks > 20% | Cracks < 5% | 5% < cracks < 20% | Cracks > 20% |
| | HMA crack sealing | 2.4 | 1 | N | 7 | 5 | N | | Fog seals | 0.1 | N | N | 2 | N | N | | Slurry seals | 2.3 | 0.7 | N | 9 | 5 | 3 | | Microsurfacing | 1.8 | 0.5 | N | 10 | 6.5 | 3 | | PME (polymer-modified emulsion) chip seals | 1.8 | 0.5 | N | 10 | 6.5 | 3 | | PMA (polymer-modified asphalt) chip seals | 1.8 | 0.5 | N | 10 | 7.5 | 5 | | AR (asphalt rubber) chip seals | 3.8 | 2.8 | 0.7 | 10 | 7.5 | 5 |
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