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Crushing theRun on the Tracked equipment helps contractor meet deadlines IN THE PAST, WITH RECYClE jobs, we would typically break, haul, crush, and truck before we put the material back down,” said Jason Marmann, equipment manager for CJ Moyna & Sons Inc., based in Elkader, (eastern) Iowa. But Marmann said Moyna’s recycle projects in the past had all been county and state road projects. “Crushing along a 10-mile stretch of Interstate, however—this was a first for us,” he said. Marmann is referring to 10 miles (16 km) of northbound I-35 in south-central Iowa. The highway was concrete with asphalt overlay, and Moyna had won the bid to pull the old pavement, handle grading, recycle the asphalt and concrete, and place the material back on-site for use as subbase and granular subbase prior to paving. Although Moyna was founded in 1947 as a grading contractor, over the years the company has grown to include mining and processing of stone, sand, and gravel, as well as concrete and asphalt recycling; today it has about 220 employees and a second office in Cedar Rapids. “We’ve handled aggregate and recycle processing since 2000,” Marmann noted. “And we have a pretty large fleet of portable and tracked equipment that we use for recycle jobs in our smaller pits and for added production. But when we won this I-35 project, we knew we needed to find tracked equipment with the production capacity that would allow us to crush all of the material on-site.” The ability to crush recycled asphalt and concrete on-site is not only a cost-saver to the contractor—trucking material is arguably the highest cost incurred in a project such as this, even if the material is recycled for reuse—but the practice is also environmentally friendly and it boosts safety with fewer trucks on the road during the project. Walk the line Moyna determined that for the I-35 grading and recycling job, the best solution would be to employ tracked plants that could follow the grade and move under their own power. And Marmann said that ideally Moyna wanted a tracked processing system that would allow the company to crush, screen, and windrow material as it simultaneously walked the grade along the highway—crushing on the run, so to speak. “We had another project going on at the same time as the I-35 project—a runway project for the Cedar Rapids airport—so we needed mobile equipment that would give us good production, too. We knew we would have to pull it off of I-35 in the middle of the job and use it at the airport before taking it back to I-35,” he said. “So the two projects justified the equipment purchase. And the only manufacturer we found with equipment that could process material on the go and meet our production goals was KPI-JCI.” HOT-MIX MAGAZINE 26 VOLUME 16 NUMBER 1
“There’s three inches of milled asphalt off the top of the concrete put onto the shoulder, creating a windrow for us,” said Dustin Ryan of CJ Moyna. “We walk down the line and crush to 1-1/2 inch subbase; we average about 1,600 feet a day in an eight-hour period. We’re moving almost every 20 seconds depending on the size of the material; larger material may take us 40 seconds for each move forward. The controls of the equipment allow for a small crew. We’re extremely pleased with the results; the FT5260 impact crusher and the FT6203 screen are well engineered and versatile.” Marmann was familiar with KPI-JCI; Moyna owned several crushing, screening, and washing plants manufactured by the Astec companies, and had also rented KPI-JCI equipment occasionally when projects demanded additional equipment. He had worked closely with factory personnel in Yankton, South Dakota, and Eugene, Oregon, as well as Moyna’s local dealer, Road Machinery & Supplies Co. (RMS), for prior equipment purchases, and this purchase was no different. “We had made factory visits in 2008 and 2009,” he said. “And even then we talked opportunities and where we see the market going. They were very hands-on and very open with the lines of communication. They listened and they have adjusted and tailored their products to fit the market.” Marmann said this willingness to work with Moyna also played into its ultimate equipment choice. The company made its decision in late 2009, and the tracked machines they ordered, a KPI-JCI FT5260 Continued on next page HOT-MIX MAGAZINE 27 VOLUME 16 NUMBER 1
Page 1 and 2: NEW! see the redesigned website for
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