When state DOTS, like Connecticut DOT, started requiring secondary compaction of the notch wedge joint, Jerod Willow, proprietor of Willow Designs, East Berlin, Pa., developed a solution:Willow Designs’ notch wedge pneumatic roller. Although we don’t often get the chance to see notch wedge pneumatic rollers in action due to their heat retaining covers, here’s a look at how Willow Designs’ notch wedge pneumatic roller works.
Asphalt Pavement (magazine) Sept./Oct. 2012 AsphaltPavement.org, New Longitudinal Joint Density Specification
APE, Allied Paving Equipment Publication Oct./Nov./Dec. 2012, callape.com