Hot Summer Weather
Hot summer weather can have several negative effects on asphalt or blacktop surfaces. While asphalt is designed to withstand a wide range of temperatures, extreme heat can accelerate the aging and deterioration process. Here are some of the negative impacts that a hot summer can have on your asphalt or blacktop:
Softening of Asphalt: On extremely hot days, the surface of asphalt can become soft and pliable. This can lead to depressions or ruts caused by heavy vehicles, like delivery trucks or garbage trucks, which can leave permanent indentations in the pavement.
Cracking: Prolonged exposure to high temperatures can cause the asphalt to expand. As it cools down in the evening or when the temperature drops, the asphalt contracts, which can lead to the development of cracks. These cracks provide an entry point for water, oil, and other contaminants, further deteriorating the surface.
Fading and Oxidation: UV rays from the sun can cause the surface of the asphalt to fade and become grayish over time. This is due to the oxidation of the asphalt binder. The loss of the binder's flexibility can make the surface more brittle and prone to cracking.
Weakening of the Aggregate: The extreme heat can weaken the bond between the asphalt binder and the aggregate (stone or gravel) in the pavement. This can result in loose or displaced aggregate, which makes the surface more susceptible to damage.
Potholes: Potholes can form as a result of the combined effects of heat, traffic, and moisture. The extreme heat causes the asphalt to soften, and the weight of vehicles can exacerbate cracks and create depressions. When rainwater or moisture infiltrates these areas and then expands as it freezes in cooler temperatures, it can lead to the formation of potholes.
Oil and Chemical Damage: Hot weather can cause oil and other automotive fluids to become more viscous. This increases the likelihood of these substances penetrating the asphalt and causing deterioration. Chemicals and solvents can also have a more aggressive effect on the pavement in high temperatures.
To mitigate the negative impacts of hot summer weather on your asphalt or blacktop surfaces, it's essential to implement regular maintenance and preventive measures. This includes sealcoating to protect against UV rays and water infiltration, crack sealing to prevent water ingress, and proper drainage to minimize the effects of moisture. Regular inspections and timely repairs can help extend the lifespan of your asphalt and keep it in good condition even during hot summer months.