Why is it important to achieve optimal compaction during asphalt placement?

Achieving optimal compaction during asphalt placement is crucial for enhancing the durability and performance of the pavement. Proper compaction allows the asphalt mixture to reach its desired density, which helps reduce air voids within the asphalt. This reduction in air voids is significant because it directly influences several performance characteristics, including resistance to moisture infiltration, raveling, and deformation under load. Furthermore, well-compacted asphalt contributes to a smoother ride quality and better overall structural integrity, ensuring the pavement can withstand traffic loads and environmental stresses over time.

While other factors such as production costs and curing times can play a role in the asphalt placement process, they are not as directly linked to the long-term effectiveness and longevity of the asphalt pavement as optimal compaction is. It is through achieving the right compaction that the intended engineering properties of the asphalt can be realized, ultimately leading to a better-performing surface.