Crack filling is a means of reinforcing asphalt pavement to prevent damage. It occurs with the injection of a hot pour of rubberized sealant into the asphalt’s individual cracks. This fill guards against water moving into the pavement and in the direction of the stone base and/or the sub-grade.
The Purpose of Crack Filling
Crack filling is an affordable means of maintaining your pavement. It prevents those nasty cracks in the asphalt that lead to water seeping beneath the pavement. This way, the base is fortified and less likely to become unstable. Crack fill will prevent the unstable base that leads to significant cracking and possibly pavement failure. It will also guard against the creation of potholes that result from cracks along heavily trafficked spaces with uneven elevation.
Frequently Asked Questions About Crack Filling:
When should crack filling be performed in a parking lot?
Crack filling can be performed across the pavement’s life cycle. Yet only specifically identified cracks should be sealed (rather than alligatored spaces).
How often should crack filling be performed in the average parking lot?
Crack filling really is a maintenance operation so it can be done whenever necessary. Those who own or manage pavement that is on a yearly repair and maintenance plan should budget for crack filling at least one time per year.
How long does it take for crack filling to dry?
Crack filling takes place at a temperature of 300 degrees Fahrenheit but cools quickly. Tracking is averted thanks the the black silica sand and crack filler.
Why shouldn’t crack filling be applied to alligatored areas?
Alligatored areas in parking lots are a sign that water has reached the sub-grade layer. The pavement is no longer capable of supporting the traffic’s weight. Crack filling is not the best course of action at this point.
Will the crack sealing material and sealcoat material stick to one another?
These two materials will likely bond. However, the crack sealing material is designed to maintain flexibility across a wide range of temperatures. Therefore, the sealer would chip away from the crack seal. The two materials will likely appear to be different colors after application.
What does “over banding” mean?
Over banding refers to an instance where a layer of crack filling material is sprayed on top of the prepared crack. The end result is a band stretching about two to three inches.