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Updated: July 8th, 2008 05:26 PM GMT-05:00

RAP Preheating System Provides Economical Solution

The Shelly Company, an asphalt producer with 47 plants located throughout Ohio, puts new RapSaver technology to the test in an effort to economically increase the use of reclaimed asphalt pavement (RAP), while lowering emissions

RAP reheating system
recycled material going up belt
recycling material
recycling process
Recycle usage has become more prevalent, which is forcing producers to search for ways to use recycle at sufficient percentages economically, while minimizing problems associated with RAP, such as blue smoke, and temperature reduction.
RapSaver system
With inlet RAP moistures of 5 percent of less, RapSaver has been able to dry RAP to 1 percent moisture and less in a single pass.
recycled material falling from conveyor belt
The RapSaver
The RapSaver is a preheating system comprised of a continuously fed sealed conductive heating system that allows cold wet RAP to be heated and dried using a slow moving hollow screw heating auger and heated trough.

By Asphalt Contractor Staff

Embracing new technology can be an enormous risk, but if pursued correctly, the risk can pay big dividends. Case in point — an innovative asphalt recycling system, built by Burke Heating Systems of Shelbyville, KY, has been put through initial testing by an Ohio asphalt producer and preliminary reports indicate promising results.

Embracing new technology can be an enormous risk, but if pursued correctly, the risk can pay big dividends. Case in point — an innovative asphalt recycling system, built by Burke Heating Systems of Shelbyville, KY, has been put through initial testing by an Ohio asphalt producer and preliminary reports indicate promising results.

Known as the RapSaver, this patent-pending design is a completely self-contained recycle system that assists the main asphalt production facility to increase production; lower operations cost and reduce emissions. The first prototype of the RapSaver was erected three years ago to establish basic design operation in Carrollton, OH.

"The goal was to provide operation data for maximum process capacity, temperature levels, moisture removal potential, maintenance wear factors, and overall performance efficiency," says Jerry Collette, chief engineer for the RapSaver project.

Why this new system?

Recycle usage has become more prevalent — it has become very advantageous and more contractors are recognizing the substantial benefits of utilizing this resource. Increased fuel, aggregate and liquid AC costs all have skyrocketed since the mid '80s. Federal and state DOTs have specified recycled asphalt for use in many mix designs. This is forcing producers to search for ways to use recycle at sufficient percentages economically, while minimizing the inherent problems that normally accompany RAP production mixes, such as blue smoke, temperature reduction and environment.

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