What is the minimum atmospheric temperature required for the application of prime coat and tack coat?

The minimum atmospheric temperature required for the application of prime coat and tack coat is crucial because it directly affects the performance and adhesion of the asphalt materials. At lower temperatures, the viscosity of asphalt products increases, which can lead to difficulties in proper application and can negatively impact the curing process.

Specifically, 16 degrees Celsius has been identified as the minimum threshold where both the prime coat and tack coat can be effectively applied, ensuring the materials can spread evenly and bond properly to the substrate. This temperature helps to ensure that the asphalt can flow adequately and achieve optimal adhesion to the underlying layers.

Using the correct temperature range for application is essential for the longevity and durability of the asphalt pavement. Operating below this temperature can result in poor performance and potential failures in the seal or bond of the asphalt layers.