with binder s consisting of cement water and or bitumen emulsion and are built in to constitute cold recycled layers 3 referred to as 34 after 34 if necessary additional new wear protection layer 4 of new layer material may be applied upon cold recycled layers 3 by sampling and analysis of the old road surface performed before the recycling process the composition of it was exactly determined and in accordance with this composition the addition component was added depending on the road in exactly dosed form and amount in order to provide a cold recycled new road surface which with a view to the cold recycled layers shows optimum composition and thus fullfils all the requirements of modern road traffic fig2 shows a schematic lateral view of an apparatus for performing the process according to the invention comprising an automotive chassis on caterpillar tractors u00ae 1a 2a and a motor driven milling roller 3a is disposed under it a compacting unit 4a where the storage container including dosing means for mineral component s 5 and for the binder components 6 7 is provided a mixer 12 disposed behind the milling rollers 3a in combination with the milling roller serves for the intimate mixing of the milled off material the mineral components 5 are available in several different compositions in a container subdivided into sections in the longitudinal direction as shown and are fed to the milling roller space via transportation means 8 jets 9 and 10 by which the cement suspension and or the bitumen emulsion is injected are also.