WIRTGEN mixing procedures

High-performance milling and mixing rotors for perfectly homogeneous mixtures

Cold recycling can be achieved either in-plant by hauling material recovered from an existing road to a central depot where it is fed through a mixing unit, or in-place using a recycling machine.

Mixed-in-place process

When mixing in-place / in-situ, a cold recycler granulates the existing pavement while mixing in binders and water homogeneously at the same time.

This method produces a new construction material mixture in a single operation. The cold recyclers are equipped with a powerful milling and mixing rotor and highly efficient injection systems.


Mixed-in-plant process

When mixing in-plant, reclaimed asphalt pavement and crushed stone are transported to a mixing plant located in the vicinity of the construction site.

Here the milled material is mixed with binders to produce a new construction material mix which is reused either on the same or on a different construction site.


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.