Crack filling is a process of repairing cracks in asphalt pavement to prevent water and other debris from penetrating the surface and causing further damage. It is a common form of asphalt maintenance that can help extend the life of a pavement surface.

The process of crack filling typically involves cleaning the cracks and removing any loose debris or vegetation that may be present. A specialized crack filler material, such as hot-poured rubberized asphalt or cold-pour emulsion, is then applied to the cracks, filling them completely to prevent water and other materials from penetrating the surface.

Crack filling is an important part of pavement maintenance because cracks can allow water and other debris to penetrate the surface, leading to further damage such as potholes, rutting, or alligator cracking. Filling cracks early can help prevent these problems and extend the life of the pavement.

In addition to preventing further damage, crack filling can also improve the appearance of the pavement surface. The crack filler material fills in the cracks and creates a smooth, uniform surface that can improve the safety and aesthetics of the area.

The frequency of crack filling depends on several factors, including the age and condition of the pavement, the climate and weather conditions in the area, and the amount of traffic the pavement receives. In general, it is recommended that cracks be filled as soon as they are detected to prevent further damage and extend the life of the pavement surface.