Automated Production of 3D Printed Сoncrete Structures with Integrated Reinforcement Mesh Based on Standard Reinforcement Bars
Abstract
3D concrete printing is developing rapidly and is seen as an alternative to traditional construction methods. But today, the use of standard steel reinforcements and their integration into the concrete is very relevant for 3D concrete printing. The currently available measures provide the automated production of the reinforcement mesh but the concreting is manual, or automates both the creation of the reinforcement mesh and concreting but the integration of the reinforcement into the concrete is not sufficient to meet the requirements regarding strength and durability. To fill this gap, this study proposes a novel concept that automates the creation of reinforcement mesh and its integration into concrete during the 3D printing process. To verify the feasibility of the concept, tests were carried out: a mesh strength test according to DIN 488-4, an X-ray scanning test for the integration of the reinforcement mesh into concrete, and a cross-section cut test perpendicular to the printing direction and in line with the printing direction. The results show that the proposed concept is viable.