Over time, sunlight oxidizes the oils in asphalt, causing the asphalt to become brittle and develop cracks. Cracks in asphalt roadways provide a place for moisture to reach the pavement base and will ultimately lead to more extensive deterioration. Crack sealing is a maintenance method to repair construction joints, and longitudinal cracks in the roadway. Crack sealing is necessary to prevent water from entering the base of the roadway, which could require major reconstruction.
Crack Sealing Process
- The cracks in the roadway may be cut out to a specified depth.
- The workers will clean and dry the open roadway cracks with high-pressure air and heat.
- A hot-pour crack sealant will be applied.
- Sand will be placed over the sealant to reduce stickiness.