Functional Principle of Soil Stabilization

How state-of-the-art cold recyclers and soil stabilizers work

Soil stabilization outperforms soil replacement thanks to fewer truck trips, shorter construction times, conserved resources, and lower CO2 emissions. The WR soil stabilizer uses its powerful milling and mixing rotor to mix pre-spread binding agents such as lime or cement into existing soil with insufficient bearing capacity, transforming it into a high-grade building material right on the spot. The resulting homogeneous mixture of soil and binding agent offers excellent tensile, compressive, and shear strength, long-term resistance to water and frost, and volume stability. Typical applications include the construction of paths, roads, highways, routes, parks and sports fields, commercial zones, industrial parks, airfields, dams, backfilling, and landfills.

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
  • The binding agent lime improves the paving properties and compactability of wet, cohesive soil. This is known as soil improvement.
  • The binding agent cement effectively increases bearing capacity, volume stability, and resistance to water and frost. This is known as soil consolidation.
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 Operating Tutorials for the WR Series
  •  Explanation of the most important machine functions and daily maintenance tasks
  •  Valid for the complete WR series
  •  Language versions: English and Spanish
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Quick Checks

You haven’t been on your WR for quite some time – here is all you need to put it into work properly.

Daily Service and Maintenance

Daily service checks, cutting tool replacement and regular cleaning intervals are shown.

Set up operators platform

Making yourself comfortable on the operators platform.

Camera / Lighting / Mirrors

Camera-system explained in operation with rear view steering assist and additional maintenance advice.

Start of cut: autmatic mode

Setting up the automatic for saving time on every lane.

Start of cut: manual mode

Step by step explanation how to bring your WR-Recycler into the cut manually.

End of cut: automatic mode

Setting up the automatic for saving time on every lane.

End of cut: manual mode

Step by step explanation of how to end the cut properly.

Parking

Walkthrough all required steps to park your WR after work is finished.

Homogenization

In the homogenization process, the WR’s powerful milling and mixing rotor granulates the native soil without the addition of binding agents and loosens it. While a grader profiles the homogeneous soil mixture that is produced, various HAMM rollers take care of the compaction process.

Soil Stabilization with Lime

For soil stabilization, the all-wheel drive Streumaster spreads the binding agent. Behind the binding agent spreader, the powerful milling and mixing rotor of the WR homogeneously mixes the existing soil with the pre-spread binding agent. While a grader profiles the prepared soil mixture, various HAMM rollers compact it.

Soil Stabilization with Cement

To produce a new, cement-treated base layer, a Streumaster towed spreader deposits cement, followed by a water tanker. The WR’s powerful milling and mixing rotor homogeneously mixes the material and the pre-spread cement. At the same time, water is sprayed into the mixing chamber by means of an injection bar. While a John Deere grader profiles the prepared base layer material, various HAMM rollers compact it.

Range of Applications

The WIRTGEN WR series features a wide range of different models to suit every soil stabilization and cold recycling application.

View Cold Recyclers


Our Recyclers in Action around the Globe

The Wirtgen Rock Crusher enables the crushing, processing, and homogenization of hard core, concrete fragments, cobblestones, and stony ground.

Wirtgen | Rock Crusher WRC 240(i)

At the joint John Deere and Wirtgen Group booth at the show, Wirtgen will be presenting a cross section of its extensive portfolio of premium products for cold milling, recycling, soil stabilization, and concrete paving.

WIRTGEN at CONEXPO

The new Generation Z² cutting tools for cold recyclers and soil stabilizers from Wirtgendeliver convincing performance in all materials thanks to high impact resistance, high shank breakage resistance and best-possible pick holder protection.

Generation Z²

Presentation of the New Automation Technology for Cold Recyclers and Soil Stabilizers at Bauma 2022

AutoTrac for the WR Series

World Premiere of the KMA 240(i) Cold Mixing Plant and Technology Updates for the WR Series

Greater Sustainability Processes

Soil stabilization, a process widely used throughout the world, is the ideal solution for producing compactable soil with good paving properties from a sub-base with insufficient bearing capacity.

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A WIRTGEN WR 250 soil stabilizer laid a load-bearing base for the construction of a new approach road to Interstate 69.

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Compared to replacing all of the soil, soil stabilization is cost-effective. Cost savings result from shorter construction times, among other factors.

WR 250 in Indiana

For its WR series, Wirtgen has developed a solution that is more than a match for even the most extreme requirements in both applications: the new DURAFORCE milling and mixing rotor.

A rotor for every requirement