What minimum tack rate should be used on all resurfacing projects to account for an oxidized asphalt surface?

In resurfacing projects, it is essential to apply an appropriate minimum tack rate to ensure proper bonding between the existing oxidized asphalt surface and the new layer of asphalt. The recommended minimum tack rate for this specific scenario is 0.06 gallons per square yard.

Using a tack rate of 0.06 gal/yd² provides a sufficient amount of adhesive to penetrate the oxidized surface, facilitating better adhesion of the new asphalt layer and preventing potential issues such as delamination or failure at the interface. The rate is carefully chosen based on the condition of the existing surface, which may have lost some of its original asphaltic properties due to oxidation.

Applying a tack rate that is lower than this minimum could result in inadequate bonding, while a rate that is too high might lead to excess bleed-through, which can create surface defects in the new asphalt layer. Therefore, the value of 0.06 gal/yd² is established as a standard for achieving optimal performance in resurfacing applications involving oxidized asphalt surfaces.