What is the proper application rate of tack coat for uniformity on milled surfaces?

The proper application rate of tack coat for achieving uniformity on milled surfaces is 0.06 gallons per square yard. This specific rate is established based on the typical requirements for ensuring a strong bond between the existing milled surface and the new overlay. Applying at this rate helps to provide adequate coverage without excessive application, which can lead to issues such as bleeding or a slick surface that is difficult to adhere to.

While higher or lower application rates may provide adhesion, they can lead to problems with performance and durability. Using 0.06 gallons per square yard balances enough tack coat to promote a solid bond while minimizing waste and the potential for negative effects on the overlay. It’s essential to follow these standardized application rates to meet quality and safety expectations in roadway construction and maintenance.