Potholes are created when moisture seeps into the pavement, gets cold, expands and then thaws. This weakens the pavement. Traffic loosens it even more, and it eventually crumbles and pops out.
Pothole repairs are performed by removing the damaged asphalt with a jackhammer or masonry saw to create a neat rectangle. When the excess asphalt is removed, an adhesive is applied and asphalt is added in layers. It is leveled off and compacted with a plate compactor. Leaving asphalt repairs unattended can lead to a bigger and more expensive fix down the road.
FIVE STEPS TO POTHOLE REPAIR
WE WILL SET UP TRAFFIC CONTROL MEASURES.
Depending on the area to be repaired, crews need the protection of correct signing, flaggers, or other traffic control.
WE WILL MARK THE AREA TO REMOVE
Crews use paint or chalkto mark a straight-sided rectangle or polygon. Lines will delineate the pavement surrounding the pothole.
WE PREPARE THE POTHOLE
Removing damaged material to reach a firm base, we make certain the remaining material is sound and free of cracks.
WE APPLY TACK TO SIDES AND BOTTOM
Immediately before filling, the crew hot pours or sprays a tack coat onto the sides and bottom of the pothole. (if applicable)
OUR CREW PLACES LAYERS OF HMA, LIFT ABOVE THE SURROUNDING PAVEMENT
Crews will layer filler two inches at a time and compact each layer. Compacting reduces the ability of water to penetrate.