Figure 3.45 shows a core of an asphalt pavement that indicates a delamination approximately 3 in (75 mm) from the surface. Several cores should be taken to verify the extent of the flaw. A delamination found in an asphalt pavement such as this could result in debonding of the surface layer. If warranted, asphalt milling may be required to a depth sufficient to remove the delamination.