Asphalt Paving is an environmentally friendly choice. It uses less energy to produce and install, and is a more fuel efficient alternative to other materials.
This material also helps reduce road friction, which cuts vehicle maintenance costs and lowers carbon dioxide emissions. A smoother roadway also extends its lifespan, saving taxpayer money in long run.
Asphalt paving is cheaper than concrete and can be more affordable if you add some of the available finishing options. Asphalt also takes less time to lay and is easier to maintain than concrete.
The cost of your asphalt paving is determined by the size, materials, and preparation needed to create the surface you want. A great paving contractor will make sure to provide a full estimate and warranty before beginning any work. They will also have all required licensing and insurance.
Before laying your new asphalt, the contractor will need to remove any landscaping features you have in place or existing paving material. If your home sits on a slope, the contractor may need to grade or level the area. This service is normally included with the paving job.
A new asphalt driveway can last up to 20 years if it is constructed properly and maintained regularly. However, it is important to remember that if water or gasoline are present under the surface, it can damage and shorten the lifespan of your driveway. To ensure the longevity of your pavement, it is recommended to keep up with regular maintenance and reseal the area every three to five years.
An asphalt pavement is a mixture of aggregates and binder, which bonds the hard materials together to form a solid and durable surface. The aggregates used in the mix can be crushed rock, sand, gravel or even recycled products like slags and construction and demolition debris. To bind the aggregates, bitumen is used, which can be made from natural or synthetic sources. Increasingly, waste and by-products are being used to create asphalt, which increases sustainability.
Once the asphalt mix is created it is kept hot throughout the paving process to prevent the material from drying out and cracking. The material is then loaded into dump trucks and delivered to the paving site. It is laid by a paver, which is available in wheeled and tracked versions. The paver has a hopper, feeder conveyors, distribution augers and an engine that tows a screed. The screed is what levels the asphalt and can be hydraulically adjusted to suit different applications.
It’s Durable
Asphalt surfaces are made to withstand heavy loads and the elements, lasting for decades before they require reconstruction. This durability comes from the fact that asphalt pavements can be “tailored” – appropriately formulated and designed to support the traffic load and climatic conditions of a particular road. Asphalt mixes can also be flexibly constructed to allow for thermal cycling (freezing and thawing).
Another factor that contributes to the longevity of asphalt surfaces is the elasticity of bitumen – the substance that gives asphalt its viscous nature. Unlike concrete, which can crack and crumble under the stress of repeated freeze/thaw cycles, asphalt can stretch and contract without damage. Asphalt also offers flexibility to accommodate movement of underground technical infrastructure, such as electrical and communication cables, district heating and water pipes.
The quality of the ingredients used in asphalt paving is critical to its long-life. The right combination of aggregate materials is necessary to produce an asphalt surface that will withstand the stresses and pressures of vehicle traffic and weather. Aggregates must be durable and angular, and the size of each particle needs to be carefully controlled. Moreover, the aggregates must be tested and approved against specific, rigorous standards before they can be used in an asphalt paving solution.
When constructing an asphalt pavement, the foundation layer is typically put down first. This layer is called the sub-base layer and it is usually comprised of crushed stones. It is the load-bearing layer and it must be strong enough to prevent rutting by effectively distributing traffic and environmental loading across the underlying unbound granular layers.
Once the sub-base layer is down, a binder course is laid. This layer is responsible for binding the other layers of an asphalt pavement together and it must be able to withstand high shear stresses, while at the same time providing adequate fatigue resistance.
The top layer is then placed. It is often referred to as the wearing course and it must be able to withstand the heavy vehicles and repeated impacts that are characteristic of most roads. The wearing course must also be able to withstand oxidation and weathering, and it must be able to resist the build up of water underneath the pavement that can cause heaves.
It’s Versatile
Asphalt paving is an extremely versatile construction material that can be used for many purposes. It can be used to build roads, driveways, parking lots, athletic courts, running tracks and more. Asphalt is also a very durable material and can withstand heavy traffic loads without deteriorating significantly. This durability translates into reduced maintenance costs and a long lifespan for asphalt roads and pavements.
Another benefit of asphalt is that it is less prone to cracking than other materials, such as concrete. This makes it a more cost-effective option for homeowners and businesses alike. Additionally, asphalt paving is able to be constructed quickly compared to other materials, which can help reduce the amount of time that traffic is disrupted during construction.
In addition, asphalt is much quieter than concrete and can be colored to create a variety of looks. It’s also less likely to form potholes during the winter, which can save both time and money on repairs. The smooth surface of asphalt also helps to decrease friction between tires and the road, which improves fuel efficiency.
Unlike other materials, asphalt is a mixture of different ingredients that are heated and blended together to create the final product. The most common ingredient is bitumen, which acts as a binder and unites aggregate materials such as crushed rock, sand, gravel, slags, recycled asphalt and various other types of natural or processed minerals. The different types of asphalt can be combined to create unique mixtures designed to meet the specific requirements of a paving project.
These distinct mixtures include hot mix asphalt, warm mix asphalt and cold mix asphalt. Each can be manufactured to meet a particular paving need, such as heavy traffic, weather conditions, noise reduction or waterproofing.
Warm mix asphalt is produced at a lower temperature than hot mix asphalt, which allows it to be mixed more thoroughly and applied more evenly. This process also produces fewer fumes during construction, which can be beneficial for the environment and a safer working environment for the crew.
Cold mix asphalt is produced without heating the aggregate materials, which can be useful for areas that aren’t subject to extreme temperatures. This type of asphalt isn’t suitable for high-traffic areas, however, because it can bleed and cause tracking in warm weather.
It’s Easy to Maintain
Asphalt is a durable material that can easily withstand heavy vehicle traffic and extreme weather conditions. It’s also easy to repair and maintain, making it a great choice for residential and commercial properties. It looks professional and clean, unlike some pavement options that can get stained or unattractive over time.
Before laying down the surface of an asphalt road or driveway, contractors first slope the area. This helps to prevent water from pooling in low areas. Next, a binder layer is put down. This layer is made of large aggregate mixed with oil to create a strong base for the rest of the surface.
After the binder layer is laid, a surfacing layer is placed over it. This is a mix of smaller aggregate and oil. It is then rolled and compacted to create a smooth, solid surface. Finally, the surface is cured. The curing process takes time, but once it’s finished, the asphalt is ready for use.
Aside from being cheap and durable, asphalt is also environmentally friendly. It can be recycled, which cuts down on the need for new materials and promotes sustainability. In addition, it doesn’t require as much energy to produce and transport as other paving materials, such as concrete.
One downside of asphalt is that it’s temperature sensitive. It can soften in extreme heat, which may cause ruts and bumps. However, with proper maintenance, it can be restored to a smooth, even surface.
Asphalt is a versatile material that can be made to look like bricks or stones, or it can be stained and coloured to match the surrounding environment. It’s also possible to have porous asphalt, which allows rainwater to pass through the surface into a specially prepared gravel base that can help filter it and reduce stormwater runoff.
Asphalt is an easy material to work with, so it’s not uncommon for contractors to be able to lay the whole surface of a road or parking lot while you’re at work or asleep. This can be done quickly, without disrupting traffic. It’s also much easier than other paving methods, which can lead to lengthy construction periods and traffic delays.