Patch/Patch Deterioration

Description

A portion, greater than 0.1 m2, or all of the original concrete slab that has been removed and replaced, or additional material applied to the pavement after original construction.

Severity Levels

Low
Patch has low severity distress of any type; and no measurable faulting or settlement; pumping is not evident.

Moderate
Patch has moderate severity distress of any type; or faulting or settlement up to 6 mm; pumping is not evident.

High
Patch has a high severity distress of any type; or faulting or settlement ≥ 6 mm; pumping may be evident.

How to Measure

Record number of patches and square meters of affected surface area at each severity level, recorded separately by material type—rigid versus flexible. For slab replacement, rate each slab as a separate patch and continue to rate joints. Note: All patches meeting size criteria are rated.