Technology: Recycling and soil stabilisation

An innovative technology has conquered the globe

Become acquainted with the operating principle and technical components of the recycling and soil stabilization technology. Get to know the different types of cold and hot recyclers, and learn more about our soil stabilizers.

Soil stabilisation

Soil stabilisers convert ground of insufficient bearing capacity into soil that is highly suitable for placing and compacting. Added lime improves the existing soil, while added cement strengthens it. Our soil stabilisers master a wide range of different applications in soil improvement and soil strengthening, such as the construction of roads, parking lots, industrial facilities, airports, harbour facilities or track beds. They can also be used for various earthmoving operations, such as the construction of embankments, slopes and backfills.

Become acquainted with the operating principle and technical components of soil stabilisation. Get to know the milling and mixing process, and learn more about this fast-paced and highly efficient technology.

The key benefits of environmentally friendly soil stabilisers

The technology makes use of existing materials, requiring only small quantities of additives or binding agents to be added. The reclaimed, bound and unbound road construction materials are fully reused. Fewer truck transports having a negative impact on the environment are required in comparison with conventional soil exchange. In addition, the fast-paced method minimizes space requirements and environmentally harmful disruptions to traffic. To put it briefly: our environmentally friendly method is convincing a steadily increasing number of customers in all parts of the world.

Soil stabilisation

  • shortens construction times
  • is a resource-efficient process
  • dispenses with the need to create stockpiles
  • minimizes environmentally harmful disruptions to traffic
  • reduces the number of truck transports to the construction site
  • reduces binder requirements
  • significantly reduces emission and in particular CO² levels


The WIRTGEN manual on soil treatment

Base Layers with hydraulic binders

View hands-on guide


Cold recycling

The cold recycling process involves milling and granulating damaged asphalt layers which are then rebound, placed again and compacted. WIRTGEN cold recyclers are the ideal choice for a broad scope of applications ranging from recycling thin asphalt layers on minor roads with low traffic volumes all the way to recycling thick asphalt packages on heavily trafficked motorways subject to extreme loads.

Become acquainted with the operating principle and technocal components of the cold recycling technology. Get to know the maximum range of applications of cold recycling, and learn more about this environmentally friendly process.

Pavement rehabilitation using the WIRTGEN cold recycling process

A method for the complete rehabilitation of pavements in five steps

The WIRTGEN Cold Recycling Manual

Concentrated knowledge from research and job-site experience

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The WIRTGEN BSM Laboratory Manual

Concentrated knowledge from research and job-site experience

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History of WIRTGEN Recyclers

A ground-breaking technology on the path to global success

View history of WIRTGEN recyclers

Hot recycling

We have been enhancing this rehabilitation method for bituminous surface courses on an ongoing basis for over 30 years. Customers appreciate the high-quality work results and low cost and material requirements.

Become acquainted with the operating principle and technical components of the hot recycling technology. Get to know the Remix and Remix-Plus paving methods, and learn more about this resource-efficient technology.

The key benefits of hot recycling

Provided that the lower pavement layers are intact in terms of bearing capacity, hot recycling is the most economical and environmentally friendly rehabilitation method for asphalt surface courses. Many different types of surface damage extending to a depth of up to 5 cm on main traffic arteries, minor roads, motorways or airports – such as rutting, cracking, lack of skid resistance, pavement irregularities, incorrect aggregate composition or excessive bitumen content – are repaired by the high-performance machines from WIRTGEN on a large scale and in an extremely short period of time.

Hot recycling offers a tremendous saving potential. Around 85 % of truck transports and about 70 % of virgin mix are saved in comparison to conventional methods using milling machines and road pavers. A typical example: a 4-m wide, 10-km long carriageway is being rehabilitated, which is equivalent to a surface of 40,000 m². Assuming a weight of the surface course of 100 kg / m², about 400 truck transports would be required for the conventional method: 200 to remove the milled material from site, and another 200 to deliver the new asphalt mix. When adding the standard amount of approx. 30 kg / m², only 60 truck loads of new material are needed in total – 340 less than with conventional methods! The amount of energy needed to deliver the new construction materials is extremely small, and the process does not incur any costs related to the storage or disposal of reclaimed material.

History of WIRTGEN Hot Recyclers

From an idea to breakthrough technology

View history of WIRTGEN hot recyclers