Asphalt is a dependable material that is often used in the construction of parking lots and driveways. Extreme weather can take its toll on the surface over time, however. While general freeze-and-thaw cycles can cause loss of structural integrity, what’s less widely understood is the impact of summer heat on asphalt.

How Heat Affects Asphalt Surfaces

1. Accelerated Oxidation

When asphalt driveways, parking lots, and other pavements are exposed to potent ultraviolet rays in the summer, they go through a process known as oxidation. This occurs when the natural oils in the asphalt’s binding material start to dissipate. This causes the material to weaken and slowly lose its strength, which can lead to cracks and fissures in the surface. The more that the ground absorbs the harsh rays, the more quickly it will oxidize. You can prevent this by hiring a paving company to perform asphalt sealcoating before it gets too hot outside.

2. Pavement Damage

Summer is travel season, which means more people are on the road and parking their vehicles and RVs in lots. The combination of occasional summer rainfall and excess exposure to contaminants, like gasoline and motor oil, can cause the surface to degrade. That, coupled with premature oxidation, will dry out the asphalt and weaken its integrity significantly. The material becomes softer and more susceptible to potholes and cracks.

3. Moisture Intrusion

Once openings start to develop in the pavement, it won’t take long for the material to develop moisture intrusion problems. Rainfall, runoff, and vehicle fluids can all accumulate on the foundation beneath the asphalt. The excessive moisture weakens the quality of the materials and can cause cracks to widen, and for the layers to separate from one another. Eventually, a paving company will need to replace the surface entirely.

 

If you’re concerned about the structural quality of your asphalt, you can trust in the professionals at MJM Services to assist. Offering services throughout Anchorage and Wasilla, AK, the family-owned paving company spanning three generations offers asphalt sealcoating, repairs, and driveway sealing to ensure that the ground is safe and attractive. You can visit them online for more information, or give them a call at (907) 376-5222 for a free estimate.