ets New Standards for Paving


Dynapac's CompactasphaltTM ensures high quality asphalt layers with extremely longer durability, thinner layers, increased life expectancy, reduced maintenance costs and shorter construction times on projects demanding up to 8.000 t/day.

CompactasphaltTM developed by Dynapac - a leader in paving technology - allows the simultaneous laying of two different layers in a single pass; to provide a quantum innovative leap in asphalt road construction techniques. Both the upper asphalt layers - the wearing and binder courses - are laid and compacted simultaneously 'hot-on-hot'. As a result, the new concept provides a better interlocking of the two courses ensuring increased life expectancy, higher deformation resistance and lower maintenance costs.

CompactasphaltTM features a paver with two separate material hoppers for both asphalt mixes and a special unit to convey the wear course material to a second screed. The new system comprises the add-on module AM300 to contain the wear course mix. It is mounted onto a high performance F300CS paver together with the second screed. The wear course mix is fed by a special feeding system of the new MF300C tracked feeder into the second material container on the paver. When required for conventional paving duties the AM300 module can be easily dismounted at any time.

The hopper for the lower layer - generally the binder - has a capacity of 45 t. The hopper for the wearing course is 27 t. The use of mobile feeders allows a continuous movement of the paver, improving the surface evenness. Due to the simultaneous compaction of both the wearing and binder courses, a quality linkage between the courses occurs, generating a monolithic upper layer. Featuring a standard 3 m paving width up to a maximum 16 m width, the paver can achieve a paving speed of 0-20 m/min.

The compact construction method sets completely new standards for highway construction and is eminently suited for large construction works. A laying capacity of 4000-5000 t/day and up to as much as 8,000 t/day ensures a shorter construction time, which is crucial for highly traveled highways. Asphalt laying is also possible when using the new technique into a later season of the year at temperatures of < 0ºC. The reduced wearing cause thickness also allows the economical use of high-value mineral nutrients relating to polishing resistance and edge strength.

Source: Dynapac AB


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