Constituent components of 3D printing in construction: Mixture, reinforcement and their main characteristics

Abstract

Construction 3D printing is one of the most promising areas in the construction of various structures. Thanks to the possibilities of automation, digital concrete production makes it possible to create complex structures that withstand the same forces as structures with standard geometry, but with increased structural efficiency and lower material consumption. This work is aimed at determining the main characteristics of mixtures for 3D printing and reinforcement strategies that are compatible with this technology. In addition, the article presents the results of a study of the strength characteristics of concrete used for 3D printing of building structures. The experiment was carried out by means of compression tests of concrete samples-cubes cut from the printed design with the dimensions of the rib 150, 100, 70 and 50 mm. This article can indicate the current state of affairs of 3D printing technology in construction, as well as indicate the direction of further research in this field.