The durability and value of asphalt paving make it a popular solution for roads, driveways, and parking lots. However, poor site preparation, heavy traffic patterns, neglected maintenance, aging, and weather exposure may occasionally cause problems. Our experts on asphalt paving in Copperopolis, CA, offer you a closer look at common asphalt problems and how to repair them.
It is not uncommon to walk through a parking lot and discover loose grit and gravel. If this has happened to you, you probably saw raveling with your own eyes. Raveling is when paved surfaces deteriorate and lose aggregate and asphalt. The thickness of the pavement will lose consistency, and loose gravel will damage the remaining asphalt. Once asphalt is penetrated by stone, water intrusion will cause the issues to get worse. Raveling may cause your pavement to become uneven and allow standing water on the surface.
The first step toward fixing raveling is to remove any loose materials. Then, if there is limited raveling, apply an asphalt patch to the damaged area. On the other hand, if there are large areas of raveling, it indicates that there is a general failure of your pavement. When this is the case, the best strategy is to remove your damaged pavement and apply a fresh asphalt overlay with the help of a paving professional.
Asphalt depressions are areas of low pavement that do not penetrate the asphalt surface. Depressions are typically caused when the asphalt is not adequately compacted during installation. If not addressed promptly, the debris and water collected in these depressions can deteriorate your pavement and compromise its structural integrity.
Temporary fixes for small depressions are asphalt patches on the existing structure. However, this will not solve the problem of poorly compacted asphalt, and the area may continue sinking. Repairing depressions permanently requires the removal of the affected area, replacing the poorly prepared sub-grade, and applying full-depth patching over the new sub-grade.
Potholes are round, small depressions in a paved surface that penetrate the pavement structure down to the base. Pothole edges can be sharp, and the damage will continue to grow over time as water penetrates the problem area. A pothole’s depth and rough edges can damage vehicles and pose trip hazards for pedestrians.
There are various ways to repair potholes. One is called a throw and roll. This involves placing patching material into a pothole with no need for preparation like debris or water removal. Then, the patching material should be compacted with the help of patching truck tires. Finally, you should check the compacted patch for slight crowning. If there is a depression present, more patching material should be added and compacted.
A semi-permanent pothole patch is another option. This requires the removal of debris and water from the pothole before squaring it up on all sides until they are vertical and have intact pavement all around. Then, patching material should be placed into the squared hole with a mound in the center that tapers down to the edges so it is flush with the surrounding paving edges. Finally, patching should be compacted with a single-drum vibratory roller or vibratory plate compactor. Compacting should start in the center and work outward. The compacted material should have a slight crown that traffic can compress to the height of the surrounding pavement.