Environmentally Friendly Processes

Clean Technology for Job Site Operations

WIRTGEN GROUP products for road construction, the mining and processing of raw materials, and recycling construction materials are not only extremely environmentally friendly thanks to their innovative, efficient machine technology. The processes they are used for, from road rehabilitation to cold recycling, also make a contribution to combating climate change.

Fast, Cost-Effective, and Environmentally Friendly

Cold recycling allows 100% of the removed road material to be reused – on site and in one operation. With the help of a paving unit, the recycled mix is then directly repaved. This reduces fuel consumption by 10 – 12 liters per ton of paving material. The paving screed then consolidates the pavement into a compact layer immediately after paving. This is how damaged roads are transformed into durable base layers.

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The total energy consumption of cold recycling is significantly lower than all other structural rehabilitation methods!

Martin Diekmann, Product Manager for Cold Recycling at WIRTGEN GmbH

Surface Mining: A Groundbreaking Technology

Surface miners are extremely versatile and multitalented. They mine raw materials such as coal, bauxite, or salt separate from intermediates. This results in products of the highest purity that can either be loaded directly from the surface miner onto trucks or loaded from windrows at a later time. During mining operations, WIRTGEN surface miners also produce level surfaces that act as stable roadways to ensure that the material can be transported quickly and safely. The use of surface miners also eliminates the need for drilling and blasting, making mining operations possible even in the immediate vicinity of residential areas. Environmental impacts such as vibrations, dust, and noise are significantly reduced while safety at the mine increases.

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If Recycling Is the Question, KLEEMANN Is the Answer

Mobile crushing and screening plants process recycled materials into classified final grain sizes that can be used as aggregates for concrete and for asphalt base, binder, and surface layers in road and building construction. In order to produce a high-quality final product, the metal contained in building rubble is separated from the rock. But the metal isn’t simply disposed of, but also reused. This makes it possible to completely recycle and reuse the materials. Throughout the entire process, the unit operates at the highest level of environmental friendliness – fuel consumption is significantly reduced thanks to an intelligent diesel-electric drive system, and noise and exhaust emissions are kept to a minimum. An external power supply also supplies downstream machines such as stockpile belts or screening plants.

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Paving Thin Layers Hot: An Environmentally Friendly Process

Minor damage to the surface layer does not have to be completely removed. Paving thin layers hot is an environmentally friendly method of surface layer rehabilitation. In this process, fine milling is first carried out to remove the damaged surface. Afterwards, a bitumen emulsion is sprayed on using SprayJet technology and the new asphalt surfacing is paved in a single operation. This saves 50% of the paving material and reduces emissions by the same amount. Finally, oscillation is used to gently compact the new asphalt surface layer, as it requires fewer passes, thereby reducing not only fuel consumption and construction time, but also noise emissions and vibrations in the vicinity of the job site. Completing the job faster also reduces fuel consumption.

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Asphalt Recycling: Maintaining the Cycle

The asphalt cycle is of vital importance in industrially developed countries. By not simply removing the asphalt and paving new asphalt, it is possible to cut costs, save materials and reduce the associated costs, and minimize the additional environmental burden. Asphalt recycling is therefore an essential part of the asphalt cycle. With its innovative products and perfectly compatible processes, the WIRTGEN GROUP sets standards in asphalt recycling.

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Low-Temperature Asphalt

Energy-saving potential is one of the key drivers, and reduced-temperature asphalt is a road construction material that is currently becoming increasingly popular as a result. Technologies and solutions from the WIRTGEN GROUP are the perfect response to this trend – and help ensure that the production and processing of lower-temperature mixes can be carried out virtually in the conventional manner.

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