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

The minimum atmospheric temperature required for the application of tack coat is generally set around 16 degrees Celsius. This temperature threshold is important because it ensures that the tack coat can properly adhere to the underlying surface. At lower temperatures, the viscosity of the tack coat can increase, leading to difficulties in spreading and decreased adhesion between layers of asphalt. The application of tack coat at the appropriate temperature also helps in achieving optimal bonding, which is essential for the longevity and integrity of asphalt pavements. Hence, 16 degrees Celsius serves as an established guideline for ensuring effective application of tack coat in paving practices.