Asphalt pavements are some of the most common ones around the world. A typical asphalt driveway, parking lot, or other pavement should last over two decades. However, proper maintenance and repair work is required to make your pavements last this long. High-quality paving installations make properties look neat, significantly boosting curb appeal and value.
However, many questions continue to arise about asphalt pavements. People compare asphalt to other materials like gravel and concrete. A pavement investment will always be a long-term one. So, exploring asphalt pavements in detail makes sense before investing in one. Below, we have answered some of the most common asphalt pavement questions. Read through to find out more:
1. What is asphalt pavement made of?
Asphalt pavement, also known as blacktop, typically comprises aggregate stone, asphalt, and cement. Some additional additives enhance durability, flexibility, and resistance to weather and traffic. The aggregate material offers boosted structural support while acting as a binder, keeping the surface together. High-grade adhesives are also used for additional strength.
2. How long do asphalt pavements last?
A well-constructed asphalt pavement should last anywhere from 15 to 25 years. However, different factors such as climate, traffic volume, and maintenance impact the overall lifespan of a typical asphalt pavement. Asphalt pavements are tough surfaces designed to last long. However, regular maintenance, including seal coating, crack sealing, and pothole filling, can significantly extend its lifespan.
3. What causes cracks in asphalt pavement?
Different factors can cause the asphalt surface to develop cracks. These factors include age, temperature fluctuations, moisture infiltration, and heavy traffic loads. In some cases, natural disasters will also cause surface cracks in asphalt pavements. Over time, exposure to sunlight and rain or snow water can cause the asphalt to oxidize and become brittle, leading to cracks. Additionally, repeated freeze-thaw cycles can exacerbate cracking by expanding existing fissures.
4. How can cracks in asphalt pavement be repaired?
Asphalt cracks should not be ignored at all, and prompt repair work will keep the surface intact for longer. Depending on the type and severity of the cracks, crack sealing, patching, or infrared asphalt repair can be the chosen methods. Crack sealing involves filling the cracks with a hot rubberized sealant to prevent moisture infiltration. Patching involves removing and replacing the damaged asphalt.
5. Why does asphalt pavement need to be seal coated?
Over time, asphalt surfaces tend to lose their strength and binding ability. This makes them come apart. Also, continued exposure to elements can fade the surface making it look dull. Seal coating is the solution to all of these problems. It helps prevent oxidation and moisture infiltration, which can cause the asphalt to deteriorate prematurely. Seal coating also restores the appearance and dark finish.
6. How often should asphalt pavement be seal coated?
Different factors like climate, traffic volume and size, pavement condition, and others will impact seal coating scheduling. Generally, asphalt pavement should be seal coated every two to three years. This helps maintain optimal protection and prolong its lifespan. However, more frequent seal (typically yearly) coating may be necessary in high-traffic areas or harsh climates.
7. Can asphalt pavement be recycled?
Yes, asphalt pavements are some of the most recycled materials globally. When you need a new asphalt driveway or pavement, most of the existing materials on the old pavement will be recycled. Recycling asphalt pavement conserves natural resources and reduces the environmental impact of paving projects. Also, this helps in minimizing the need for virgin materials for new projects.
8. How is asphalt pavement maintained in winter?
If it snows a lot in your area, prompt snow removal is always the number one factor. Also, keeping water runoffs unclogged at all times will enable melting snow water to be cleared away quickly. De-icing agents such as rock salt or calcium chloride can melt ice and snow. However, harsh chemicals might be harmful. Repairing cracks or potholes before the winter is always a recommended technique. Also, seal coating before the start of the winter will help melt snow faster and keep the pavement stronger.
9. Can asphalt pavement withstand heavy traffic loads?
Asphalt pavements are designed by professional asphalt driveway companies to handle all kinds of traffic volumes and loads. This factor makes it ideal for highways, airports, and industrial areas. Proper design and construction techniques, such as adequate thickness and compaction, ensure the asphalt pavement can handle the required traffic volume and weight without any damage. Regular maintenance, including crack sealing and patching, helps mitigate the effects of heavy traffic on asphalt pavement.
10. How can I maintain my asphalt driveway?
Proper maintenance is key to prolonging the lifespan of an asphalt driveway. Good maintenance measures include keeping it clean by sweeping off any foreign materials, prompt crack and pothole filling, and regular seal coating. You want to minimize damage and control it before it extends. Avoiding heavy or sharp objects on the driveway surface and removing any oil or mulch stains will keep it fresh for longer. Also, keep the water runoffs clear at all times. Porous asphalt is the way to go for many projects.
And Finally
Typically, asphalt driveways and pavements are very durable surfaces. However, regular maintenance is key to making them last long. Asphalt driveways are much better options compared to concrete pavements and gravel. Their ability to maintain their looks and functionality for a longer duration sustainably and affordably makes them the ideal choice for residential and commercial projects.