Roads & Paving
LHC Inc. adds two Dynapac asphalt tandem rollers to paving operations
By Rock to Road Staff
By Rock to Road Staff
LHC Inc., a construction company in Montana’s Flathead Valley, recently added its first two Dynapac CC6200 VI rollers to its asphalt paving operations.
With an operating mass of 27,340 pounds and 84-inch drum width, the CC6200 VI is the largest in Dynapac’s tandem rollers lineup.
Operators Dustin Yeadon and Stanley Appelt say the machines have increased productivity and efficiency.
“We call them the Swiss Army knives of compaction because they actually work great in all three paving stages: breakdown, intermediate and finish,” says Appelt. “Typically, we just use them for the latter two because you can do both virtually simultaneously with a CC6200 VI.”
Yeadon adds, “The ability to get the job done with fewer passes gives us time, labour and fuel savings. We basically can run all day on less than half a tank. And, if we can handle two stages with one machine, that eliminates the need for additional rollers, which increases the savings.”
Adjustable vibration frequency
Dynapac designed its CC asphalt tandem rollers for high vibration frequency with low amplitude in order to maintain high efficiency on modern, thin asphalt layers. This allows them to compact quickly without crushing the aggregate material.
They can also be used for thick layers with high amplitude and a “normal” vibration frequency. A wide frequency and amplitude range provides optimization in any application.
“Being able to adjust the vibration frequency increases versatility,” says Appelt. “We used the CC6200s on everything from smaller parking lots to large-scale highway projects. You can set your numbers to what you need, and it will tell you the range of where you need to be speed-wise for optimized production. That helps with efficiency.”
Vibration frequency is set through the new instrument panel and controls that were designed with simplicity in mind.
“It’s very user-friendly with a dynamic screen that gives you instant feedback with information such as where you’re at in terms of impacts per foot,” says Appelt. “You can input your numbers pre-workday, so you can get right to work when it’s time. If you do need to make a quick adjustment, it’s two or three buttons and you’re back to rolling.”
Water on demand
The swivelling operator’s module in the CC6200 VI allows a 180-degree turn of the seat, instruments and levers. It can also slide from side to side, making it possible for the operator to see drum surfaces, sprinkler nozzles and drum edges.
Yeadon and Appelt can set how often water from the high-capacity water tank is sprayed on the drums with the control panel and a joystick button. The tank can be filled from both sides of the roller, and there is a two-bar setup on both drums.
“If you want water on demand, just push the button; otherwise, you can adjust how often it sprays to match the job,” Yeadon explains. “In most cases, even if it’s the lead roller behind the paver, it takes a good, long time for the water to run out. We typically put down 400 to 500 tons between fill ups.”
LHC Inc. purchased the Dynapac CC6200 VI rollers from local distributor Modern Machinery.