Asphalt is widely regarded as a durable and resilient paving material, especially for driveways and parking lots. However, like all materials, it is not immune to damage. Cracking in asphalt can lead to costly repairs and disruptions if left unchecked. Understanding the common causes of asphalt cracks can help you take preventative measures and maintain the integrity of your pavement. Let's explore the main culprits behind asphalt cracking.
1. Moisture
Moisture is one of the leading causes of damage to asphalt. When water infiltrates the asphalt surface, it can cause deterioration and weaken the material. As the water sits within the asphalt, it leads to shifting and eventually cracking. If these cracks are not addressed quickly, they can expand into larger potholes, which can be more costly and difficult to repair.
While asphalt is more moisture-resistant than concrete, excessive moisture accumulation can still cause significant damage. To improve drainage, it’s important to ensure that the base beneath the asphalt is properly prepared. A solid drainage system can help prevent water from becoming trapped and minimize moisture-related damage.
2. Temperature Changes
Asphalt can be affected by temperature fluctuations, which exacerbate other factors like moisture retention. For example, when water seeps into cracks in the asphalt, it can freeze during cold weather. As the water freezes, it expands, putting pressure on the surrounding material and leading to larger cracks and potholes.
Similarly, extreme heat can cause asphalt to expand and retain excess moisture, weakening the pavement’s structure. This expansion and contraction cycle can lead to surface cracks over time, especially if the asphalt is not properly maintained.
3. Poor-Condition Asphalt
Asphalt cracking is often a progressive issue. If minor damage is not repaired quickly, it worsens over time, leading to larger cracks and surface damage. Asphalt that is already in poor condition is more prone to further deterioration, as cracks and damage create entry points for moisture and other elements that can accelerate the problem.
Regular maintenance, such as sealcoating, can protect asphalt surfaces from the elements. Sealcoating forms a protective layer over the asphalt, helping to prevent moisture infiltration and shielding the surface from the effects of temperature fluctuations. Filling cracks and maintaining a smooth, sealed surface will ensure that the asphalt remains strong and resistant to damage.
Conclusion
By understanding the causes of asphalt cracking, you can take proactive steps to maintain the integrity of your pavement. Regular inspections, prompt repairs, and preventive maintenance like sealcoating can help extend the life of your asphalt surfaces and prevent costly repairs down the road. For businesses in asphalt maintenance, knowledge of these factors will help improve your service offerings and ensure customer satisfaction.