Small pieces of PCC that break loose from the surface leaving small divots or pock marks. Popouts range from 25 – 100 mm (1 – 4 inches) in diameter and from 25 – 50 mm (1 – 2 inches) deep.
Roughness, usually an indicator of poor material
Popouts usually occur as a result of poor aggregate durability. Poor durability can be a result of a number of items such as:
- Poor aggregate freeze-thaw resistance
- Expansive aggregates
- Alkali-aggregate reactions
Isolated low severity popouts may not warrant repair. Larger popouts or a group of popouts can generally be repaired with a partial depth patch.