Updated: July 22nd, 2008 04:54 PM GMT-05:00
Soil stabilization meets nuclear power plant needs
Pavement Preservation
After a grading contractor spread and compacted the treated material on the sloped side walls, the entire pond was covered with a two-layer liner to seal it from any leakage.
For the pond construction, Asphalt Busters used a level mixing area adjacent to the pond structure to spread over 200 truckloads (4,550 tons) of the cement additive (which was applied at a rate of 8 percent of the total combined volume to be mixed) and then injected over 1.4 million gallons of water at 200 to 425 gallons per minute to the treated soil before mixing to a depth of 12 inches in order to produce 55,000 cubic yards of material for the sloped side wall construction.
"The entire site is under a microscope as far as total emissions being released into the environment," says Dan Selby with Asphalt Busters. "That required some modifications to the skirting around the mixing chamber of our reclaimer/stabilizer, and the emissions output of our equipment was also monitored."
Water was immediately injected into the mix on a pass following the cement placement, then the water was unhooked to make a final 12-inch-deep mixing pass over the material. This was done to minimize the possibility of dust emitting from the site.

By Greg Udelhofen
Editor
"The federal government looks at anything that leaves the site. They monitor the carbon emissions generated by any type of activity at the site and not just that of the power plant. They would keep track of our fuel usage during the stabilization process in order to calculate and record the carbon output that occurred during the construction. "
Selby's stabilization crew used a CMI/Terex reclaimer/stabilizer on the project and worked with a grading contractor who placed and compacted the mix on the slopes.
"We not only had to add rubber around the skirting of the mixing chamber, but we also modified the vane feeder of the cement spreader in order to drop a thicker layer of cement in order to control dust," Selby says. "We immediately injected water into the mix on a pass following the cement placement and then unhooked the water to make a final 12-inch-deep mixing pass over the material. Working closely behind the cement spreader again minimized the possibility of dust emitting from the site."
Stabilization expertise
Asphalt Busters has 11 reclaimer/stabilizers in its fleet designed primarily for soil stabilization work.
"We do a lot more soil stabilization than road reclamation," Selby notes. "Most of our road work is pulverization with an occasional full-depth reclamation project.
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