Print head for printing three-dimensional structures made of concrete and a method therefor

A print head for printing three-dimensional structures made of concrete, where said print head is configured to be moved in space and to deposit individual layers of a concrete material one on top of the other which forms the structure to be produced, said print head comprising:

• a feeder which is configured to provide said concrete material;
• a conveying device which is configured to receive said concrete material from said feeder and convey said concrete material;
• a shaping section which is configured to be filled by the concrete material that is pressurized and to define at least lateral dimensions of one of said layers to be deposited;
• an exit section pointing in a direction opposite to a feed direction of said print head;
• and
• an exiting prevention section which is configured to prevent said concrete material from exiting in the direction of said feed direction of said print head;
• wherein said conveying device is an auger device;
• wherein said shaping section comprises a controllable profiling device which is configured to be able to vary a layer thickness of the one of said layers to be deposited;
• and
• wherein said controllable profiling device is configured to form at least one section along a width direction of the one of said layers made of concrete material to be concave with regard to the layer thickness.