The faster or heavier the vehicle, the more the pavement is compressed and then tensioned. Temperature changes, even those within a 24-hour day, expand and contract the pavement sheet. Traffic and temperature create small surface cracks. Water seeps through the cracks to the base materials and weakens the roadway. More cracks form and become wider if not repaired.
Untreated roads deteriorate much faster than treated roads.
Crack sealing is an inexpensive routine maintenance treatment that will significantly delay roadway deterioration. Local road crews need to apply sealing material directly into cracks before cracks become too large or before the roadway is subject to the freeze-thaw cycles of New England winters. Flexible rubberized asphalt sealants bond to crack walls and move with the pavement, preventing water from entering the road base. The life of the road is extended and maintenance costs greatly reduced over time. Methods and Equipment For the sealing process to be successful, crews must be trained and furnished with the proper equipment and materials.