Dynapac showcases new road building equipment

By Helen Wright24 March 2011

Dynapac showcased a number of new roller models at ConExpo, including the CC900 compact tandem rolle

Dynapac showcased a number of new roller models at ConExpo, including the CC900 compact tandem roller.

Dynapac showcased a range of new technology and equipment for the North American market at ConExpo, including new tandem asphalt compaction rollers, a new paver and a new paving technique.

Multiple new roller models were on display at the show. Designed for small-scale compaction work, the company's 'CC' range of compact tandem rollers has been expanded to include three new models - the CC800, CC900 and CC1000. Weighing 1.6 tonnes, the machines come in drum widths of 31, 35 and 39 in (787 mm, 889 mm and 991 mm).

The rollers are fitted with a central lifting eye that is designed to allow fast and simple loading for transportation, while power comes from a 23.5 hp (17.5 kW) Perkins engine.

In addition to the smaller rollers, Dynapac was also showcasing eight double-drum and eight combi tandem 'CC' series asphalt rollers at ConExpo.

The CC224HF, CC234HF, CC324HF, CC334HF, CC384HF, CC424HF, CC524HF, and CC624HF are dual-drum models, while the Combi models-CC224CHF, CC234CHF, CC324CHF, CC334CHF, CC384CHF, CC424CHF, CC524CHF, and CC624CHF-­­­feature a single drum roller and rear set of wheels.

The articulated tandem rollers are powered by a Cummins QSB 4.5 engine with a rated power of 125 hp (93.2 kW) at 2200 rpm for the CC424HF, and 152 hp (113.4 kW) for the larger CC524HF and CC624HF models. The new machines weigh between 11.6 tonnes and 13.9 tonnes.

And Dynapac also showcased the F1000 Series asphalt paver at the exhibition - another debut for the US market. The F1000T (tracked) and F1000W (wheeled) asphalt pavers are built to handle extreme conditions in remote locations. They are 10 ft (3 m) wide and feature high-performance outboard auger drives and high-capacity slat conveyor systems, designed to eliminate center-line segregation.

ConExpo also saw the North American debut of Dynapac's compact asphalt road paving technology - a process which combines both the binder and wearing courses in one single, hot-on-hot, paving operation.

A Dynapac DF145CS paver is used for the new process, coupled with a Dynapac CM2500 module so that two material hoppers and two screeds are simultaneously in use. The first screed applies the highly-compacted binder course and the second screed lays the wearing course directly behind the first.

This technology is widely used in Europe and the company has high hopes for its uptake in the US. Dynapac US vice president of road construction equipment, Shawn Cheney, said initial testing at the company's NCAT test site in Germany suggested the resulting wearing screed on the road surface could last up to 25 years.

"Use of the Dynapac compact asphalt road paving technology in Germany has shown reduced construction times of up to -50% and the prolonged durability of the wearing course. Dynapac is positioning itself for the future of the North American road building market by introducing this innovative process to the market," Mr Cheney said.

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