Usually, full-depth reclamation (FDR) is performed with large, self-propelled reclaiming machines. But road- and street-maintenance managers have discovered they can use less expensive equipment for projects of 1 mile or less.
In Brownwood, Texas, for example, street superintendent Terry Garrett uses the Asphalt Zipper, an attachment manufactured in Pleasant Grove, Utah, that attaches to the bucket of a front-end loader and has a 4-foot-wide cutting edge.
First, crews spread the cement over the area to be reclaimed. Then the Asphalt Zipper pulverizes the asphalt and base to a depth ranging from 6 to 8 inches and mixes in the cement. The process takes approximately one hour for a 600-foot-long by 30-foot-wide street.
Next, a grader blades the material to the side of the road where water is added. The grader moves the material back, and more water is added to bring the material up to optimum moisture content. Next, a rubber-tired roller compacts the mixed base material.
Garrett estimates that FDR enables the department to do twice as many miles with the same budget.
See main article, FDR Comes to Town