What is the new asphalt tack rate?

The new asphalt tack rate is significant in ensuring proper bonding between layers in roadway construction. A tack rate of 0.04 gallons per square yard, with a margin of error of plus or minus 0.01 gallons, is optimal for promoting adhesion without excessive application that could lead to issues such as tracking or slippage. This rate has been determined based on best practices and industry research, which emphasizes the need for a balance between sufficient bonding properties and material efficiency.

Using this specific rate helps contractors and engineers to adhere to project specifications and standards, fostering better performance and longevity of the roadway surface. The other rates, whether more or less than the identified 0.04, may not conform to the latest recommendations and could either lead to inadequate adhesion or waste of materials. Therefore, option B is recognized as the correct choice reflecting the updated standards for asphalt tack rates in current projects.