Are you applying tack coat properly?  As we learned in our newsletter on tack coats, the height of the spray bar and nozzle spray patterns have a significant effect on tack coat coverage.  Click on the interaction below to see how various combinations of spray bar height and nozzle pressure produce different coverage patterns. 

Want to learn more about tack coats, application rates, laydown timing, specs? Check out the following resources:

• A Pavement Interactive article on Tack Coats that describes the basic aspects and application considerations.  It also contains additional resources describing emulsions to help you understand how tack works. 
• Summary results from a Tack Coat Survey of all 50 states that shows how the state DOT’s use tack coat in their specifications.

Got other tack resources or links to share? Please let us know and we’ll add it to the list above.

This entry was posted on Tuesday, June 29th, 2010 at 3:57 pm and is filed under Newsletter, Resources, RoadReady, Training. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.