Multiple layer composite material consisting of cement-bound concrete and polymer-bound concrete and method for producing the same

A method for producing a multiple layer composite material comprising at least one layer of cement-bound concrete (1), at least one layer of polymer-bound concrete (2) and a transition (3) between adjacent layers of cement-bound concrete and polymer-bound concrete, characterized by the steps of:

• making at least one concrete mixture containing cement as binder,
• making at least one concrete mixture containing polymer as binder, with said polymer or the components of said polymer, in the uncured state, being dispersible in water,
• supplying the concrete mixtures separately and applying them directly on each other so as to form at least one layer of polymer-bound concrete (2) on at least one layer of cement-bound concrete (1),
• with the concrete mixture containing cement as binder, at least at the transition (3) between adjacent layers of cement-bound concrete mixture and polymer-bound concrete mixture, containing less water than the amount of water necessary for setting.