Soil stabilisation improves the geotechnical properties of the soil, increasing its bearing capacity and creating a stable foundation for the surface layer.

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.

The modern soil stabilisers – here's how they work.

Soil stabilisation scores top marks in comparison to soil exchange as it requires fewer truck transports, results in shorter construction times, saves resources and reduces CO2 emissions. When operating as a soil stabiliser, the WR uses its powerful milling and mixing rotor to mix pre-spread binders, such as lime or cement, into the existing, insufficiently stable soil at working depths of up to 560 mm to convert it into a construction material of high quality in an in-situ process. The resulting homogeneous soil-binder mixture offers high tensile strength, compressive strength and shear strength values as well as long-term water resistance, frost resistance and volume stability. Typical applications include the construction of paths, roads, motorways, foundations, parking lots, sports grounds, industrial parks or facilities, airports, embankments, backfills or landfills.

Soil compaction reduces the pore space of the soil filled with air and water and makes the soil more resistant to traffic and environmental impacts.

Soil stabilizers convert subsoils of poor bearing capacity into soils that are highly suitable for placing and compacting. Soil-binder mixtures can be used to achieve a permanent increase in bearing capacity, significantly improve shear strength and considerably reduce settlement behaviour.

Challenging operating conditions such as the powerful cold recy-cling, granulation or stabilization of coarse-grained soils make ex-treme demands on the cutting tools. This calls for perfectly matched components designed to meet the highest performance requirements. They can be relied on to provide high milling and mixing performance while ensuring maximum resistance and durability at the same time.

GENERATION A² is the all-rounder among picks for cold recycling and soil stabilization and impresses thanks to its product characteristics, such as high fracture resistance in the carbide tip.

Computer-assisted automatic functions not only optimise work processes and thus machine productivity, but also the machine operator’s performance. Our numerous intelligent information and diagnostic systems additionally support the operator and make their job easier – resulting in faster and more efficient operations. A few examples of assistance systems for cold recycling and soil stabilisation are presented below.

The quick-change toolholder system HT22 PLUS HD is primarily distinguished by its higher wear resistance. The system's exceptionally long service life results in a noticeable extension of the replacement intervals in use on construction sites. It is also characterised by the prismatic design of the contact surface.

From the modified road milling machine to the highly specialized cold recycling train – that’s a brief way of summing up the impressive history of development of the cold recycling technology at WIRTGEN. From the beginnings – in the mid-1980s – we were fascinated by the huge potential offered by cold recycling, and since then we have played a key role as the acknowledged technology leader in this field. So it goes without saying that we have paved our path to success with numerous innovative milestones.

Earthworks and rock construction are the foundation for the construction of new roads. The objective is to provide a stable foundation and ensure the sub-base offers the ideal bearing capacity.

This applies to road rehabilitation using cold milling machines and cold recyclers as well as to soil stabilization and the extraction of useful minerals using surface miners.

For over 50 years, customers around the world have relied on our innovative technologies and solutions in the field of Road and Mineral Technologies. We make continuous advancements to our WIRTGEN technologies in order to further enhance our customers’ efficiency. We have decades of unique expertise at our disposal – especially when it comes to WIRTGEN’s key technologies.

The frost protection layer prevents water from rising into the structure – thus preventing frost damage.