Pavement milling (cold planing, asphalt milling, or profiling) is the process of removing at least part of the surface of a paved area such as a road, bridge, or parking lot. Milling removes anywhere from just enough thickness to level and smooth the surface to a full depth removal.
Broken asphalt, alligator, failed asphalt, etc.
Alligator cracking, also called fatigue cracking or failed asphalt, is a common type of distress in asphalt pavement. It is usually studied under the transportation section of civil engineering. Alligator cracking characterized by interconnecting or interlaced cracking in the asphalt layer resembling the hide of a crocodile. Cell sizes can vary in size up to 12in across, but are typically less than 3-9in across. Crocodile cracking is generally a loading failure, but numerous factors can contribute to it. It is often a sign of sub-base failure, poor drainage, or repeated over-loadings. It is important to prevent alligator cracking, and repair as soon as possible, as advanced cases can be very costly to repair and can lead to formation of potholes or premature pavement failure.
After asphalt is been removed by a grinder or other equipment, tree roots will be cut as recommended by an specialist.
After failed asphalt is removed, compact existing base, and oil the edges of the old asphalt.
Parking stalls asphalt repairs
When the big grinder can not get to the edge, failed asphalt that is next to trees or concrete curbs has to be removed with a jack hammer or a rock saw.
After failed asphalt is removed, base is compacted and all the edges from the old asphalt are oiled, then we can pave our first layer, (first lift or the plug).