Operating principle in situ
The modern cold recyclers and soil stabilisers of WR series – here's how they work.
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.
Wide range of applications
Automated features for efficient operation
Precise metering systems for binder addition
Efficient engine and diagnostic systems
Perfect visibility concept and comprehensive camera system
Perfection in ergonomic design and handling
Outstanding all-terrain mobility
High milling and mixing performance
Steering system tailored to field requirements
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 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
Range of applications
The finely tiered WIRTGEN WR model series offers the perfect solution for each type of job in soil stabilisation and cold recycling.
To soil stabilisation