Raveling

Loose materials (usually aggregate) that “ravel” from the surface or edges of the pavement, resulting in depressions which may fill with moisture and loose aggregate which may pose problems.
Causes
- Asphalt binder unable to hold aggregate in place
- Dusty aggregates
- Segregation of the mix during construction
- Low in-place density (insufficient compaction)
- Aged asphalt binder
- Stripping (moisture damage)
Solutions - Cures
If the cause is superficial, a surface treatment will solve the problem. If poor drainage is causing a stripping problem, the drainage should be corrected.
Road Science™ Solutions
- Ralumac® Micro-Surfacing
- MicroTekk™ Flexible Micro-Surfacing
- BondTekk™ Bonded Pavement Technologies
- Encore® Hot In Place Recycling
- RoadArmor® High Performance Chip Seal
Solutions - Prevention
- Timely preventive maintenance with one of the cures listed.
- Polymer modified asphalt binder
- Clean aggregates
- Material transfer devices
- Good compaction
- Good drainage
- Anti-strips




