Asphalt combines materials, including asphalt cement and aggregates like sand and crushed stone. The raw material is heated to make it malleable and then applied to the base using heavy pavers.
The paver’s hopper holds the asphalt mix until it is delivered to the screed via conveyor chains. The paver’s hydraulically folding hopper wings help to increase hopper capacity. Contact Asphalt Paving Summerville SC now!
Asphalt is one of the most economical paving materials. Its initial installation costs are lower than those of other materials, and it requires less maintenance over its lifespan. This translates into substantial cost savings without sacrificing quality or functionality.
Unlike concrete, asphalt is a flexible material that can absorb shock from traffic and prevent cracking and surface damage. It also resists weather damage, including ice, snow and heavy rains. Asphalt surfaces are designed to be smooth and provide an easy driving experience for drivers, reducing vehicle wear and tear and fuel consumption.
Proper grading and drainage is an essential part of any paving project. Asphalt contractors should rake and grade the area before starting work to create a sloped surface that will allow water to run off easily. This prevents standing water, which can erode the surface and cause cracking over time.
Another benefit of asphalt paving is its ability to reduce noise from traffic. Compared to concrete, asphalt has been shown to reduce highway noise by up to seven decibels, making it easier for drivers to concentrate and focus on the road ahead of them. This can help improve safety and make the roads more peaceful for everyone, especially children.
In addition, asphalt is a renewable resource that can be recycled and reused over time. It is also a safe option for the environment because it does not release unwanted chemicals into the earth or underground aquifers, as is the case with other paving materials such as concrete.
Asphalt has a high aesthetic value and can be easily shaped to meet various design preferences. It is available in a variety of colors and can be stamped to mimic the look of more expensive materials such as brick or stone. This versatility makes it a popular choice for residential, commercial and retail projects.
Paving contractors must have several skills and qualifications to perform their job well. Some of these include the ability to operate machinery such as a paver, loader or roller; knowledge of basic construction; and understanding of state and local paving regulations. The physical demands of the profession are also significant, with workers frequently working in extreme weather conditions and for long hours.
Installation
Asphalt is a popular choice for roadway construction and large-scale paving projects, such as airport runways, because it’s cost-effective and offers a smooth surface that reduces noise levels. Professional asphalt contractors have the expertise to complete your project safely and on budget. The installation process begins with a thorough site inspection to identify any potential issues, such as groundwater contaminants or subpar soil conditions, and provide solutions for their immediate resolution. After a clean slate is provided, the next step is to choose the correct asphalt material for your specific terrain and traffic needs. This is a key factor that impacts pavement longevity.
The most important step in the paving process is to prepare the base for your asphalt surface. This includes ensuring proper water drainage, grade and compaction. Incorrect drainage can lead to asphalt heaving and depressions, while insufficient grade or compaction leads to asphalt failure. In both cases, the underlying dirt will need to be graded, compacted and a supportive base of rock added.
After the base layer has been properly prepared, it is time to install the binder and surfacing layers. The binder layer is composed of coarse, larger aggregate material and oil, which helps to create a strong foundation for the surface asphalt layer. The surfacing layer is then spread over the binder and compacted with rollers to ensure that it adheres well and provides a stable surface.
In the final steps of the installation process, your asphalt contractor will need to make sure that transitional points where new paved surfaces meet existing driveways, sidewalks or roads are smooth and seamless. This is often accomplished with butt joints or graded transitions that allow for proper water run-off.
Once the paving is completed, effective traffic management and barriers should be put in place to prevent premature use until the asphalt surface has fully cured. This can take up to 30 days, so you should still be careful when driving or walking on the newly paved surface. With regular maintenance, your new asphalt paving will last for years to come.
Maintenance
Once your new asphalt surface is installed it will require a little maintenance to keep it looking good and functioning well. Keeping up with routine power sweeping and inspections will help prevent major issues from developing in your parking lot, driveway or roadway. Preventative services like crack filling and seal coating will also extend the life of your asphalt.
Cracks are the primary source of damage to asphalt pavement, as water and other environmental elements penetrate the weak areas of the asphalt surface, causing degradation over time. Promptly addressing these damages will minimize the impact on your pavement and limit the need for costly repair or replacement. Cracks should be filled and sealed regularly, especially after the winter season.
Potholes are another common cause of damage to pavement. Typically caused by traffic and weather, the resulting depressions allow water to seep into the base of your asphalt and further damage it over time. Potholes can be easily repaired with preventative maintenance and patching, and by improving drainage.
Rutting is a result of heavy vehicle loads or inadequate base material that causes the lower layers to separate from the asphalt surface. This can cause accelerated wear and tear that can lead to expensive repairs or replacements. This can often be corrected with preventative maintenance by removing the deteriorated sections of the asphalt and repairing the base.
Depressions are a result of standing water and can be caused by water penetration, poor drainage, excessive weight in a single area, or installation errors. Removing the water and repairing the base is often a simple solution that will restore the integrity of the asphalt and avoid future damage. If the depressions are severe, however, the removal and replacement method may be necessary to repair the overall condition of the asphalt. This method is a more permanent repair than surface patching. The process involves cutting out the damaged section, cleaning it, and then replacing it with a fresh layer of asphalt.
Repairs
Asphalt is durable and tough, but it can still become damaged over time. Constant exposure to the elements causes it to deteriorate. Without proper maintenance, this deterioration may lead to cracking, potholes, uneven sections and even ruts and depressions.
Taking the appropriate steps to prevent or repair these problems at an early stage will significantly reduce the likelihood that you’ll need to replace your entire asphalt surface. The best time to perform these procedures is during preventive maintenance, which includes routine power sweeping and inspections. It’s also recommended to have a yearly Pavement Condition Assessment performed on your asphalt, as the assessment will help you determine if your parking lot or driveway is in need of any specific repair procedures.
When asphalt becomes damaged, it can often be repaired at a fraction of the cost of replacing the entire surface. Patching and crack filling are the two most common forms of repairs. The hot sealant will adhere to the surface and keep water and other natural elements from exploiting the weakened areas in your pavement.
Some damage, however, cannot be repaired. If the base has failed due to inadequate construction, too much weight in one area or a number of other factors, it’s necessary to remove and redo the whole section of your asphalt.
Other types of repairs may include milling and resurfacing. If only the top layer of your asphalt is worn or damaged, then milling machines can grind away the damaged material and apply a new layer. This is a quick and affordable solution that can save you money in the long run, since you’ll be able to avoid removing and replacing your entire asphalt surface.
Regularly sealing your asphalt will keep water from seeping into the base layer and causing more serious issues. It’s important to do this before winter starts, as water penetrates and deteriorates asphalt more quickly in colder climates. It’s also recommended to regularly clean your asphalt, removing debris and oil spills as soon as they occur, so the surface stays healthy. These preventative measures will extend the lifespan of your asphalt and give it a beautiful, well-maintained appearance.