Notch Wedge Pneumatic solid wheel design
Introducing Willow Designs Notch Wedge Pneumatic solid wheel design.
When one of our Connecticut clients approached us last year to come up with a solution for secondary compaction
of the "wedge" part of the notch wedge joint our initial reaction was hesitant and with skepticism because as seasoned
asphalt guys with over 20 years experience in laydown we have never tried this technique because we had always been
successful not compacting the wedge until the adjacent pass was placed. Well, my opinion is now way different than it
was a year ago and I believe this is the piece of the puzzle to make contractors highly successful at getting density in the joint.
Wheels by Superior Tire
Pneumatic tire rollers kneed the material and compact from the bottom-up, and since the " wedge" portion of the notch wedge joint is
essentially a thin lift with aggregate sizes exceeding appropriate nominal size, the risk of fracturing aggregate and over compaction
is non existent.
The biggest concern was how to get the Notch Wedge Pneumatic Roller to track behind the paver properly. Our patent pending steering
design let's this become reality but, also yielded one crucial thing we did not expect. The steering system allows the ability to adjust
lateral tracking behind the paver, so as the prototype worked last year, we discovered with precision adjustment of the steering system we
could compact the "vertical notch" of the notch wedge joint with the side wall of the pneumatic tire which gave the open joint great
stability while compaction was taking place.
The Willow Designs Notch Wedge Pneumatic Roller is designed to work with our Notch Wedge Systems only. A simple update allows your
current systems to work with the Notch Wedge Pneumatic Roller.
A pressurized tank is fitted to the top of the Notch Wedge Pneumatic Roller for release agent. When paving starts, the screed operator
sprays the release agent on the pneumatic tire till it comes up to temperature. From this point, applying release agent is only periodic
throughout the shift.
Designed to be pulled from either side of the paver, with a fully adjustable pull point to accommodate front or rear extend screeds
Willow Designs Notch Wedge Pneumatic Roller weighs in @450 lbs and is very manageable for 1 person to hook up.
RESULTS: -When good paving practices are followed, we have been achieving joint density numbers equal to mainline mat
densities on cold joint construction. These results are consistently being yielded by every contractor using these systems to date.