The operating principle of cold recycling

The modern cold recyclers and soil stabilizers of WR series - here's how they work

The operating principle of cold recycling

The modern cold recyclers and soil stabilizers of WR series - here's how they work

  1. Wide range of applications

    Finely tiered WR model series for a wide range of applications in soil stabilization and cold recycling.

  2. Perfect visibility concept and comprehensive camera system

    The operator is additionally supported by a perfect visibility concept and intelligent camera system.

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  3. Perfection in ergonomic design and handling

    Intuitive operating concept and outstanding ergonomic design for high machine productivity.

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  4. High milling and mixing performance

    Our expertise and experience of many years for maximum milling and mixing performance.

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  5. Automated features for efficient operation

    Numerous automated features ensure highly efficient operation.

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  6. Efficient engine and diagnostic systems

    High-powered engine and high-tech diagnostic systems for maximum operational availability.

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  7. Steering system tailored to field requirements

    Steering systems tailored to field requirements for maximum flexibility on the construction site.

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  8. Precise metering systems for binder addition

    Reliable, high-precision metering systems for improved mixing quality.

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  9. Outstanding all-terrain mobility

    Unrivalled all-terrain mobility for maximum performance in particular in soil stabilization.

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The WR is equipped with a powerful milling and mixing rotor and state-of-the-art injection systems. The cold recycler mills and granulates the existing asphalt pavement, injects binders and water in precisely metered quantities and mixes all three in a single operation. The new base layers produced in this in-situ process are distinctive for their exceptionally high bearing capacity.

Range of applications
The finely tiered WIRTGEN WR model series offers the perfect solution for each type of job in soil stabilization and cold recycling.

To soil stabilization

Recycling with pre-spread cement

For the production of a hydraulically bound base layer, a layer of cement is pre-spread in a first step by a Streumaster binder spreader, which is followed by a water tanker truck. The WR uses its powerful milling and mixing rotor to granulate the damaged pavement layers, simultaneously mixing in the pre-spread cement and injected water. The resulting homogeneous construction material is finish-graded by a motor grader and then compacted by different HAMM rollers.

Recycling with pre-spread cement and bitumen emulsion

Small quantities of cement are pre-spread in a first step by a Streumaster binder spreader, which is followed by water and emulsion tanker trucks. The WR uses its powerful milling and mixing rotor to granulate the damaged pavement layers, simultaneously mixing in the pre-spread cement and injecting water and bitumen emulsion into the mixing chamber via two separate, microprocessor-controlled injection bars. The resulting homogeneous construction material is finish-graded by a motor grader and then compacted by different HAMM rollers.

Recycling with cement slurry and foamed bitumen

A bitumen tanker truck travels ahead, followed by a WIRTGEN WM 1000 slurry mixer. The bitumen tanker truck and slurry mixer supply the WR 240 / WR 240i, WR 250 with the binders required for recycling the pavement in need of repair. The recycler uses its powerful milling and mixing rotor to granulate the damaged pavement layers, simultaneously injecting water-cement slurry and foamed bitumen into the mixing chamber via two microprocessor-controlled injection bars. The resulting homogeneous construction material is finish-graded by a motor grader and then compacted by different HAMM rollers.

More applications

Market-leading and cutting-edge products for the Road and Mineral Technologies business sectors are constructed at the WIRTGEN brand headquarters in Windhagen, Rhineland-Palatinate. With its innovative, high-performance and cost-efficient products and technologies for cold milling, soil stabilization, hot and cold recycling, concrete paving and surface mining, WIRTGEN leads the world market in road construction and repair, as well as in mining natural rock and pay minerals.

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