Methods and equipment are disclosed relating to three-dimensional printing that include positioning an array of nozzles within a bed of loose solid material, moving the array of nozzles through the bed of loose solid material while injecting a liquid from the array of nozzles in a controlled pattern causing the liquid to react with a portion of the bed of loose solid material forming a solid concrete three-dimensional object. An unreacted portion of the bed of loose solid material may then be separated from the solid three-dimensional object.

The subject matter of the invention is a method for producing a concrete component (1), wherein a plurality of layers of a dry mixture consisting of at least one silicate former and one hydraulic binder are deposited one atop another on a base (7), wherein after applying each layer the respective layer is mixed with water, wherein the contour of the area that is mixed with water correlates with the desired shape of the concrete component (1) at the level of the respective layer to be applied.

The invention relates to a 3D printing method, a device and molded parts produced with the aid of this method.

Provided is a manufacturing method of a three-dimensional structure which manufactures a three-dimensional structure by laminating layers, the method including: forming the layers using a three-dimensional formation composition containing three-dimensional formation powders, a solvent, and a binder; discharging a binding solution containing a binding agent to the layers; and performing a permeation prevention step of preventing the solvent from permeating the layers, at least on a part of the layers to which the binding solution is discharged. It is preferable that the permeation prevention process is selectively performed with respect to an area of the layers to which the binding solution is not discharged.