An automatic reinforcement mechanism for reinforcing the 3D printed concrete

Abstract

One of the pressing problems of additive technology in construction today is the reinforcement of 3D printed concrete. Research conducted so far has proven that when reinforcing 3D printed concrete, only when using standard corrugated steel reinforcement, its mechanical properties approach those of traditional reinforced concrete. Now the question that needs to be solved is how to automate the process of reinforcing 3D printed concrete with standard grooved steel rebar. In order to solve this problem, this work developed the concept of an automatic reinforcing mechanism that forms a double-row reinforcing mesh automatically using the resistance welding method, developed its prototype in accordance with the same concept, and carried out laboratory tests to verify its performance. In particular, in order to determine the compliance of the mechanical properties of the reinforcing mesh, produced automatically by the resistance welding method, with the requirements of the DIN 488-4 standard and to test the prototype resistance welding system, cross-shaped samples were made and tested by the shear method on a dynamo. In addition, the performance of all systems of the prototype automatic reinforcing mechanism was tested. Thus, the efficiency of the proposed concept has been proven.