Alligator Cracking In Asphalt: What It Is & What To Do

Alligator cracking, also known as fatigue cracking, is a common and severe form of asphalt damage that can significantly impact the longevity and safety of asphalt surfaces. Recognizable by its distinctive pattern, resembling the scales of an alligator, this type of cracking often indicates underlying issues within the pavement structure. Addressing alligator cracking promptly and effectively is crucial for maintaining the integrity of asphalt pavements and preventing further damage. This blog post will delve into what alligator cracking is, its causes, and the best practices for fixing and preventing it:

Key Takeaways

One client believed he could patch on top of alligator cracks and had a company do the work for them. A year later, their patch was cracking as well, and the company called us to fix it properly for them. Often, especially with asphalt repairs, the cheapest option is not the best one.

What Is Alligator Cracking?

Alligator cracking or fatigue cracking, is a widespread form of asphalt distress characterized by interconnected cracks forming a pattern reminiscent of alligator skin. This type of surface damage is usually a symptom of deeper structural issues within the asphalt pavement, indicating that the asphalt layers or the underlying base have failed.

What Causes Alligator Cracking?

The primary causes of alligator cracking include:

1. Load-Related Stress: Repeated heavy loads, such as from trucks or other large vehicles, can cause the asphalt surface to flex and eventually crack. Over time, these stresses lead to fatigue, resulting in the characteristic alligator cracking pattern.
2. Poor Construction: Inadequate thickness of the asphalt layers, insufficient compaction, or an unstable base can contribute to the formation of alligator cracks. Proper construction techniques and materials are essential for preventing such issues.
3. Water Infiltration: Water can weaken the asphalt and the base layers, especially when it seeps through cracks and creates voids beneath the surface. This undermines the structural integrity of the pavement, leading to alligator cracking.
4. Aging and Oxidation: Over time, asphalt can become brittle due to oxidation and exposure to the elements. This makes the pavement more susceptible to cracking under stress.

What To Do When You Spot Alligator Cracking

Spotting alligator cracking early can prevent more extensive and costly repairs later. Here’s what to do when you notice these cracks:

1. Assess the Extent of the Damage: Determine how widespread the alligator cracking is. Small areas of cracking may be manageable with localized repairs, while extensive cracking might require more comprehensive solutions.
2. Investigate the Cause: Understanding the root cause of the cracking is crucial. This may involve checking for drainage issues, evaluating the pavement structure, and considering the load-bearing demands placed on the asphalt pavement.
3. Consult a Professional: Given the complexity of alligator cracking, it’s often best to consult an asphalt paving expert. They can provide an accurate diagnosis and recommend the most effective repair strategies.

How To Fix Alligator Cracking

Fixing alligator cracking involves addressing both the surface damage and any underlying issues. Here are the typical steps involved:

1. Remove the Damaged Area: The affected area of asphalt needs to be removed. This often involves cutting and excavating the damaged pavement to reach a stable base.
2. Rebuild the Base: Any problems with the base layer, such as inadequate compaction or water damage, must be resolved. This may involve adding and compacting new base material to provide a solid foundation.
3. Replace the Asphalt Surface: Once the base is stabilized, new asphalt is applied and compacted to restore the surface. This ensures a smooth, durable repair that can withstand future stresses.
4. Seal the Surface: Applying a seal coat to the repaired area can help protect it from water infiltration, UV rays, and other environmental factors that contribute to asphalt deterioration.

Preventing Alligator Cracking in the Future

Preventing alligator cracking involves proactive maintenance and proper construction practices. Here are some tips to help prevent this type of asphalt distress:

1. Regular Inspections and Maintenance: Regularly inspect asphalt surfaces for early signs of cracking or other damage. Promptly address minor issues before they escalate into more significant problems.
2. Proper Drainage: Ensure that the pavement has adequate drainage to prevent water from accumulating and infiltrating the asphalt. This includes maintaining gutters, drains, and grading around the pavement.
3. Quality Construction: Invest in quality materials and proper construction techniques. Ensure that the asphalt layers are of sufficient thickness and properly compacted and that the base is stable and well-prepared.
4. Load Management: If possible, limit the weight and frequency of heavy loads on the asphalt surface. Use designated routes for heavy vehicles and consider reinforcing areas subjected to frequent heavy traffic.

Conclusion

Alligator cracking is a serious form of asphalt damage that requires prompt and effective intervention. By understanding its causes, recognizing early signs, and implementing proper repair and prevention strategies, you can extend the life of your asphalt pavement and avoid costly repairs. Remember, especially with asphalt repairs, the cheapest option is often not the best. Investing in quality repairs and maintenance will pay off in the long run by providing a durable and reliable surface.

If you spot alligator cracking on your asphalt pavement, don’t wait for the damage to worsen. Contact us today for a professional assessment and high-quality repair services. Our experienced team will ensure your asphalt surface is restored and protected for years to come. For asphalt crack repair, contact Infinity Asphalt today.