asphalt raveling causes
If so, the asphalt may have been raveling right under your feet! Raveling is known as the deterioration of pavement by the loss of asphalt and rocks. This is evident by the rocks and sand on the pavement surface and in gutters. Over a period of time, the thickness of the pavement begins to dwindle away, until the entire pavement has eroded completely. What are the main causes of raveling? Dust Coating: The aggregate particles can cause a layer of dust to form on top of the pavement, which the asphalt binder then bonds with instead of the aggregate. Aggregate Segregation: Pavement is layered with aggregate, which is made up of different sized rocks that are crushed and screened.