What is the temperature range at the bottom of the asphalt layer?

The temperature range at the bottom of the asphalt layer is crucial for the proper bonding and workability of asphalt materials. The correct range indicates that the asphalt is in a state that allows for optimal compaction and adhesion during the paving process.

Temperatures within this range ensure that the asphalt remains pliable enough to allow for adequate densification under compaction. If the asphalt is too cool, it can lead to inadequate bonding and compromised pavement integrity. Conversely, if the temperature exceeds this range, the asphalt may degrade or lose its desirable properties.

In practice, the cited range reflects typical conditions for the effective performance of asphalt layers in road construction. Understanding this helps ensure that the application processes align with the material’s specifications, leading to better long-term performance and durability of the road surfaces.