PASS® Scrub and Rejuvenating Fog Seals
A process by which a unique polymer modified asphalt recycling agent, PASS®, is applied to a pavement surface at a rate of .15-.45 gallons per square yard depending on the pavement condition and cover aggregate.
A specifically designed drag broom is then pulled through the emulsion, filling cracks and voids left open by the initial application.
Next, an even coat of sand (Scrub Seal), chips (Chip Seal) or other readily available aggregate is applied over the emulsion at a rate of 10-25 pounds per square yard. This seal is then rolled with pneumatic tire compactors.
Finally, the excess aggregate is swept up approximately 1-2 hours after application, depending on weather conditions and local traffic. These steps follow right after one another, minimizing duration of lane closures.