Reflection Cracking

This distress occurs only on asphalt-surfaced pavements that have been laid over a concrete slab. It does not include reflection cracks from any other type of base, that is, cement- or lime-stabilized; these cracks are caused mainly by thermal- or moisture-induced movement of the concrete slab beneath the AC surface. This distress is not load-related; however, traffic loading may cause a breakdown of the asphalt surface near the crack.