Asphalt paving is one of the most common and cost-effective methods to repair roads, driveways, parking lots and other surfaces. The process involves several steps that must be completed correctly for a successful end result. Choosing an experienced contractor with the right equipment will help ensure that your asphalt paving is done properly. The correct equipment can also reduce the amount of time it takes to complete the job and provide you with a finished product that is safe for drivers.
The first step in the asphalt paving process is called predose, where the aggregate components of the asphalt mix are weighed to determine their proper composition. Then, the materials are mixed together and blended with a liquid asphalt binding agent to produce the asphalt concrete that will be used in your pavement. The asphalt concrete is then sized to meet the needs of your project. This is important, as the correct gradation of the asphalt will help to prevent surface raveling and provide you with a durable, long-lasting road or pavement.
When you’re ready to start the actual paving process, a large dump truck is then brought in to transport the asphalt mix to your construction site. The asphalt is then loaded into the hopper of an asphalt paver. The hopper is designed with hydraulically folding wings that can be opened and closed to increase its capacity. Then, conveyor chains carry the asphalt mix from the hopper to an auger that spreads it in a layer across the required pavement width. After the layer of asphalt is spread, it is compacted using a variety of different machines. These machines include vibratory and pneumatic rollers, which are specially designed to help improve density, reduce voids and perfect the layer of asphalt.
After the layers of asphalt are laid, they need to be properly compacted in order to achieve optimum durability and strength. A poorly compacted layer will not only be unsightly, but it can also cause structural damage to the road or pavement. The resulting problems can range from potholes to permanent cracks and damages. This is why it’s important to hire an experienced asphalt paving company that uses the latest technology and quality control measures to guarantee excellent results.
The final asphalt layer, often referred to as the “wearing course” or “surface course,” is installed on top of the binder course. The wearing course is a much softer material than the binder course and it contains finer, smaller aggregate particles. This allows the wearing course to more easily disperse water and helps to reduce blinding spray for drivers in wet conditions.
The black color of the asphalt helps to reflect light, making it easier for drivers to see road markings and signs in poor weather conditions. This visibility is especially helpful during bad winter weather, when driving on icy or snowy roads can be dangerous for motorists. The black asphalt also provides a strong contrast between the road and its surface markers, which makes it easier for drivers to see hazards that may not be readily apparent.