UFC 3-270-05
15 March 2001
CHAPTER 10
DISTRESS 68, POPOUTS
10.1. Description. A popout is a small piece of pavement that breaks loose from the surface
due to freeze-thaw action in combination with expansive aggregates. Popouts usually range from
approximately 1 inch (25.4 millimeters) to 4 inches (102 millimeters) in diameter and from 1/2 inch
(12.7 millimeters) to 2 inches (50.8 millimeters) deep. Deduct curves for popouts are shown in
Figure 10.1.
10.2. Severity Levels. No degrees of severity are defined for popouts. However, popouts must
be extensive before they are counted as a distress; i.e., average popout density must exceed
approximately three popouts per square yard over the entire slab area (Figure 10.2.).
10.3. How to Count. The density of the distress must be measured. If there is any doubt about
the average being greater than three popouts per square yard (per square meter), at least three,
random, 1-square-yard (1-square-meter) areas should be checked. When the average is greater
than this density, the slab is counted.
10.4. Options for Repair. Do nothing.
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