Asphalt surfacing is a service that involves applying asphalt (a mixture of aggregates, binder, and filler) to surfaces such as roads, driveways, parking lots, and other paved areas. The process typically involves the following steps:
1. Site Preparation
- Clearing and Grading: The area is cleared of any debris, vegetation, or obstacles. The ground is graded to ensure proper drainage and a level surface.
- Sub-Base Installation: A solid foundation is created with a sub-base layer, which is usually made of crushed stone or gravel. This step is critical to the longevity and durability of the asphalt surface.
2. Base Layer Installation
- Base Layer Application: Once the sub-base is compacted, a base layer of asphalt (usually a coarser mix) is applied. This layer provides strength and support to the final surface.
3. Asphalt Layer Application
- Hot Mix Asphalt (HMA): The asphalt is heated to around 300°F and then spread across the surface using specialized paving equipment.
- Compaction: Rollers compact the asphalt to ensure smoothness, stability, and proper bonding with the base.
4. Finishing
- Edge Trimming: The edges are trimmed to create clean, defined lines.
- Curing: The asphalt needs time to cool and harden before it can be used, which usually takes 24-48 hours.
5. Optional Treatments
- Sealcoating: A protective layer can be applied to help extend the lifespan of the asphalt by protecting it from UV rays, water, and chemicals.
- Line Marking: For parking lots or roads, lines and signage are painted onto the surface for traffic control.
Benefits of Asphalt Surfacing:
- Cost-Effective: Asphalt is generally more affordable compared to other paving options like concrete.
- Durability: It is flexible, which allows it to withstand temperature fluctuations and heavy loads.
- Quick Installation: The process is relatively fast, especially with modern equipment.
- Recyclable: Asphalt is one of the most recycled materials, making it environmentally friendly.