This article presents research on the additive manufacturing of concrete elements using selective binding of cement. In the process referred to as selective cement activation, fine layers of a dry cement-sand mixture are solidified locally by applying water. This way, layer by layer, complex 3D objects can be created with a high degree of geometric freedom. Initial tests with a prototype 3D printer have demonstrated the potential of the manufacturing method for applications in construction. An updated prototype printer is presented which enables further exploration of the process and its future applications.     «

This article presents research on the additive manufacturing of concrete elements using selective binding of cement. In the process referred to as selective cement activation, fine layers of a dry cement-sand mixture are solidified locally by applying water. This way, layer by layer, complex 3D objects can be created with a high degree of geometric freedom. Initial tests with a prototype 3D printer have demonstrated the potential of the manufacturing method for applications in construction. An u...     »