Before starting the asphalt concrete paving process, the construction team must determine the type and number of road rollers based on the project site conditions and the progress of the work. Proper compaction is crucial for ensuring the quality of the asphalt base and the smoothness of the finished surface. The compaction process typically includes three stages: initial compaction, intermediate compaction, and final compaction. Each stage has different requirements for the roller used, making it essential to choose the right combination of rollers and follow a proper rolling sequence.
After the asphalt concrete is laid, the best compaction setup usually involves a combination of a steel drum static roller, a tire roller, and a vibratory roller. The number of rollers required depends on the daily production volume and the complexity of the site. However, for sports fields and track and field facilities, at least two rollers are necessary regardless of the amount of asphalt being paved. These projects often require a combination of a light roller, a heavy-duty roller, and a small roller to ensure proper compaction in all areas.
Moreover, the conditions of sports venues can be quite complex, with many tight spaces and specific requirements. In such cases, it's common to use manual vibratory machines to achieve the desired compaction and meet the project quality standards.
When selecting the weight of the rollers, the following guidelines can be referenced:
- Two-wheel steel drum roller: 6–8 tons
- Three-wheel steel drum roller: 8–12 tons
- Tyre roller: 12–20 tons
- Steel drum vibratory roller: 2–6 tons
- Walk-behind small vibratory roller: 1–2 tons
- Hand-held vibratory machine: weight not less than 180 kg, vibration frequency not less than 3,000 times per minute
Choosing the right equipment and following the correct compaction procedure ensures long-lasting and high-quality asphalt surfaces, especially in demanding environments like sports facilities.
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