What is the main purpose of the compaction process during asphalt paving?

The primary purpose of the compaction process during asphalt paving is to achieve density and stability of the pavement. Compaction removes air voids within the asphalt mixture, thereby increasing its density. This is crucial for enhancing the structural integrity and durability of the pavement, ensuring it can withstand traffic loads and resist deformation over time.

Proper compaction also contributes to the overall performance of the asphalt by creating a smoother and more consistent surface, which can help with water drainage and reduce the likelihood of cracking and raveling. A well-compacted asphalt layer will maintain its shape and function effectively throughout its service life, providing a stable surface for vehicles.

While reducing temperature or increasing visual appeal might have some relevance to asphalt paving, they do not address the essential role of compaction in creating a durable and stable pavement structure. Similarly, while effective compaction can potentially lead to reduced maintenance needs, that is more of a beneficial consequence rather than the main goal of the compaction process. The focus remains on achieving the necessary density and stability to ensure long-lasting performance.