❖ Block Cracking may be identified by squares or circles in your asphalt pavement. This condition suggests an old or dry mix was used when the asphalt surface was laid and typically appears two to three years after installation. To repair this type of crack, try using a thin overlay or surface treatment that can seal the crack and help prevent future cracking.
❖ Edge Cracking appears along the outside edges of the pavement. These cracks are typically long and run in the direction of the road, and are caused by the soil under the road drying and shrinking, poor drainage, or excessive traffic. Edge cracking may be repaired by filling with your choice of asphalt crack seal.
❖ Fatigue Cracking is identified by numerous small cracks in a localized area and indicates a flaw in the design or installation on the asphalt surface, poor drainage, and temperature changes. We recommend full-depth patches, to strengthen and restore the surface and prevent cracking in the future.
❖ Linear and Transverse Cracking may be characterized by linear or longitude cracking occurring along the joints of the pavement. Asphalt is usually laid across large surfaces in strips or sections. If the joints between the sections are improperly constructed, cracks form. You should take proper steps to prevent water from seeping into underlying layers by filling the cracks with a combination of asphalt and sand or emulsion slurry.
❖ Reflection Cracking occurs along the surface of the pavement that mirrors the sub-layer cracking, the sub-layer joints, or shifting in the sub-layers. These cracks are usually identified as straight and sometimes grid-like across the surface of the pavement. We recommend filling these cracks with sealants and an asphalt fill product to prevent moisture from breaching the surface and causing more damage.
❖ Slippage Cracking looks like the asphalt is slipping along the surface of the pavement. These cracks are identified by wrinkles or deep open gaps, and look like crescent or half-moon shapes. These types of cracks are usually produced when braking or turning wheels cause the pavement surface to slide and deform. Slippage cracks need to be filled or partial depth patches depending on the severity of the crack.