- Iowa Airport Pavement Management System /
- Pavement Inspection /
- PCC Distress Measurement /
- Durability Cracking
Durability Cracking
Durability cracking (D-Cracking) is caused by the concrete's inability to withstand environmental factors such as freeze-thaw cycles. It usually appears as a pattern of cracks running parallel to a joint or linear crack. A dark coloring can usually be seen around the fine durability cracks. This type of cracking may eventually lead to disintegration of the concrete within 1 to 2 ft (0.3 to 0.6 m) of the joint or crack.
Severity | Distress Example | Description |
---|---|---|
Low | "D" cracking is defined by hairline cracks occurring in a limited area of the slab (such as one or two corners, or along one joint). Little or no disintegration has occurred. No FOD potential. | |
Medium | One of the following conditions exists: (1) "D" cracking has developed over a considerable amount of slab area with little or no disintegration or FOD potential; (2) "D" cracking has occurred in a limited area of the slab (such as one or two corners or along one joint), but pieces are missing, and disintegration has occurred. Some FOD potential. | |
High | "D" cracking has developed over a considerable amount of slab area, and has resulted in disintegration or FOD potential. |