Seasonal changes affect asphalt in different ways. Ultimately you might need repairs depending on the issue at hand.
Here are a few seasonal changes your asphalt pavement goes through:
Potholes are obvious signs your asphalt needs repair. Colder months cause freezing above and below the surface of asphalt which leads to potholes. Warmer months can bring pounding heat and UV rays which over time can crack and strip the asphalt roads, parking lots and driveways, also leading to raveling and potholes.
Asphalt Parking Lots
Conduct preventive maintenance on your parking lot before the rains start or before it starts snowing. Basically conduct proper maintenance before the damage causing seasons set in. Maintenance is generally planned in advance to seal the surface from water, as well as lessen the effects of oxidation and weather. Apply a sealant every few years to keep the surface layer of asphalt protected.
Steep Terrain Asphalt Erosion
If you see the rocks around rivers or in river beds, they corrode slowly over a period of time. Similarly, when it rains in steeper elevations, little by little rain washes(corrodes) away the liquid asphalt leaving bare rock and aggregate. The aggregates and asphalt break away and wind up in runoff, gutters and storm drains.
Heat can cause cracks in the asphalt which can result in water seeping in. The water may not damage the asphalt in the same way when it freezes due to cold temperatures, but it can damage the asphalt by eroding the subsurface layers. This results in an air gap forming within the pavement. If the pavement above these subsurface gaps experiences any pressure, such as the weight of a vehicle passing over it, the top layer of the asphalt will sag, collapse, and then crumble, thereby forming a pothole.
Effect on Asphalt
All hard surfaces, including asphalt, absorb heat. This causes not only the surface temperature to rise, but also causes the ambient temperature to rise. This results in UHI (Urban Heat Island). UHI is basically an effect in which urban environments, which consists of less vegetation and more roads and buildings, have a significantly higher temperature than the rural areas directly around it. This means that when you are installing asphalt, you need an asphalt material that reflects as much heat as possible instead of asphalt that absorbs most heat.
As mentioned in the above points, a lot of things may affect your driveway. Regular maintenance may help in reducing the damage and repairs necessary as well. Altogether, it may prevent seasonal changes from affecting your asphalt road. Hire the services of a professional if you want to keep your asphalt road in the best condition.
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