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Repairing Reflection Cracking with:
Overband Crack Seal Simple Overband Crack Seal Flush Fill Crack Seal
Problem: Reflection Cracking
Cracks in a flexible overlay occurring over an existing crack or joint are known as reflection cracks. Reflection cracking over joints usually results from the expected thermal expansion/contraction of the underlying joint or by the movement of a rigid pavement slab beneath the asphalt surface due to thermal and moisture changes.
Solution: Overband Crack Seal
One of the common and cost-effective methods of sealing pavement cracks, overband crack sealing is a procedure whereby the repair crew flush-fills the crack with sealant material and shortly afterward creates a wider band of material over the top. This crack sealing method includes routing of the crack, which provides a reservoir to allow sufficient sealant to properly bond, manage movement, and deliver a superior moisture seal. Filling the crack and overbanding can be accomplished in a single pass; however, some choose to break the process into two steps to accommodate thermal shrinkage of the sealant in the widened reservoir.
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