Asphalt can develop a number of different problems or damages. When an asphalt road or parking lot begins to develop a problem, it needs to be repaired to help save the rest of the asphalt. For those who need to manage asphalt roads and parking lots, it is important to be able to identify when asphalt is damaged and in need of some repair. Andersen Asphalt & Striping would like to share the different types of asphalt damages.
One of the most common types of asphalt damages are cracks. Asphalt can develop a number of different types of cracks that need to be repaired. Failure to repair cracks often lead to bigger problems. Some of the common types of asphalt cracks are:
• Block Cracks – Square or Circular Shaped Cracks
• Edge Cracks – Cracks Appearing Along the Edge of the Asphalt
• Fatigue Cracking – Also Known As Alligator Cracks look like Alligator Pattern Cracks
• Linear and Transverse Cracking – Long and Linear Cracks Along the Joints
• Reflection Cracks – Cracks Along the Surface of the Asphalt that Mirror Cracks in the Sub-Layer
• Slippage Cracks – Cracks that Look Like the Asphalt is Slipping Along the Surface.
Corrugations in Pavement
Another type of damage that occur in asphalt are corrugations. Corrugations are determined by the lumps and humps that develop along the asphalt’s surface. These deformations and more are often caused by contamination and moisture in the asphalt’s mixture. Corrugations mostly occur within a few short years of the asphalt’s installation. To repair corrugations in the asphalt, often a cutter needs to come and remove the humps and lumps, then patch and smooth out the asphalt.
Asphalt rutting is when indentations along the wheel path of a car develop in the asphalt’s surface. Rutting develops when the asphalt’s surface is compressed. However, it is also the combination of poor compaction during installation or the asphalt sub-layer been weakened due to moisture. Rutting is repaired by applying a cold mill along with an overlay that fills and smooths out the road or parking lot.
Grade depressions is when a section of the asphalt settles lower than the rest. Where grade depression has occurred often those areas will pool with water when it rains. Grade depressions are common and often occur simply over time as soil will shift and settle. When grade depression does occur, you will still want to correct the problem. This is done with an overlay, infrared patching, or a cold mill.
Pothole are another common problem. Potholes develop usually when the previous asphalt layer was damaged such as by cracks. When poorly repaired or swelling occurs, the pothole repair work will break down often forming potholes. Potholes often form when the asphalt expands and contracts suddenly due to weather conditions. There are a few different ways potholes are repaired. It will often depend on what caused the pothole to develop. But usually a pothole is repaired by using a cold mix and filling in the hole.