Community Research and Development Information Service - CORDIS

Development of an improved milling and mixing drum together with a larger mixing chamber to improve the mixing quality and influence the grain size of the recycled material

Improved components for the milling and mixing process:
Development of an improved milling and mixing drum together with a larger mixing chamber to improve the mixing quality and influence the grain size of the recycled material.

When milling with the currently available milling drums, the milled material’s grading and degree of mixing with the binding agents can be improved by changing the forward speed of the recycling machine, by changing the arrangement of the cutting tools on the milling drum and by changing the volume and exit area of the milling and mixing chamber on the recycling machine. These influence factors were tested on various milling and recycling jobs using an existing recycling machine of type Wirtgen 2200 CR.

The three goals at the beginning of the project were to establish a relationship between milling machine speed and milling drum speed, to achieve a greater mixing space for the aggregate and binding agent and to achieve a greater depth of cut with the current machine. Although the machine that received these components has only been working in concrete, the factors discussed above, were successfully achieved on this particular project. There is however room for further practical research and development in this area. This subject is interesting to many contractors and consultants as it can influence the production and quality of the milled material and also the end product when recycling existing road materials.

Reported by

Wirtgen GmbH
Hohner Strasse 2
53578 Windhagen
Germany
See on map
Follow us on: RSS Facebook Twitter YouTube Managed by the EU Publications Office Top