Crackfilling

Crackfilling is a pavement maintenance technique used to seal cracks in asphalt and concrete surfaces. Its primary purpose is to prevent water from entering the pavement structure and causing further deterioration. When water seeps into cracks, it can freeze and expand, widening the cracks and leading to potholes. It can also weaken the underlying base layers of the pavement.

The process typically involves cleaning the cracks to remove debris, dirt, and vegetation. Once clean, a specialized crack sealant material is applied. These sealants are usually hot-applied or cold-applied polymers, such as asphalt-based emulsions or rubberized asphalt. The sealant is forced into the crack, creating a flexible barrier that prevents water infiltration and helps to bind the edges of the crack together.

Crackfilling is a cost-effective preventative maintenance measure that extends the lifespan of paved surfaces like roads, parking lots, and driveways. It is generally performed before significant damage, such as potholes, develops. Regular crackfilling can significantly reduce the need for more extensive and expensive repairs in the future. The type of sealant and application method may vary depending on the climate, the type of pavement, and the width and depth of the cracks.