Cost-Effective Design with Low Life Cycle Costs
Another advantage of the cold recycling process that cannot be understated is the significant potential for energy savings during material processing. The raw materials do not have to be dried or heated, which means that 10-12 liters of fuel can be saved per ton compared to conventional rehabilitation methods. By almost completely reusing the surface course, the need to transport building materials can be reduced by up to 90%. At the same time, companies can cut resource consumption by 90% and completely eliminate the need to dispose of materials. This results in significantly reduced fuel consumption and lower CO2 emissions. Most importantly, the cold recycling design makes it possible to reduce the use of binders by up to 50% – the area with the greatest potential savings, since binders are still the biggest cost factor in road rehabilitation. Thanks to the special properties of BSM, cold recycling technology results in very low costs over the entire life of the roads.
Rehabilitation That Keeps Traffic Flowing
Since the RAP is immediately recycled and the associated logistics are extremely lean, in-place cold recycling means that projects can be completed much quicker than with conventional rehabilitation methods.
The entire series of machines required for the rehabilitation process can fit in the width of just one lane. On two-lane roads, this means the recycling process is carried out across the width of a single lane, while traffic can be routed along the other side of the roadway past the construction site in one lane. Outside normal working hours, the entire road width is usually available, as the freshly recycled pavement can also temporarily be used immediately after compaction has been completed.
New Generation of Wirtgen Recyclers Also in Use as High-Performance Milling Machines
In addition to the W 380 CRi (775 kW; EU Stage 5 / US Tier 4f) and W 380 CR (708 kW; EU not regulated / US Tier 2) models, the new generation of Wirtgen recyclers also includes the W 240 CRi (775 KW; EU Stage 5 / US Tier 4f) and W 240 CR (708 KW; EU not regulated / US Tier 2). The W 240 CRi and W 240 CR recyclers can also be equipped with integrated Vögele AB 375 T variable screeds and have a maximum working width of 2,350 mm.
The four cold recyclers can also be used as efficient, high-performance milling machines employing the traditional up-cut process. Thanks to powerful engines and an impressive conveyor belt capacity, they achieve high removal rates at a maximum milling depth of up to 350 mm – for instance when removing complete asphalt packages or for large-scale rehabilitation measures such as on motorways or airport runways.