Investigation of the Working Features of Concrete Structures Manufactured Using Technologies of Additive Building Manufacturing

Abstract

The most common approach to the application of additive manufacturing technology today, which provides for printing the contour of buildings and structures with the creation of non-removable concrete formwork for the construction of load-bearing and enclosing structures. The features of the operation of a non-removable formwork under the action of lateral pressure of a concrete mixture are investigated. The results of the experimental research stage implemented on the basis of the SMITH Research Institute of the Moscow State University of Civil Engineering are presented, in which the strength characteristics of samples selected from single-layer concrete structures made using additive manufacturing technology, as well as the bearing capacity of fragments of non-removable formwork of rectangular and closed cylindrical shape under the influence of simulated pressure of a concrete mixture were studied. In the course of the work, the influence of parameters such as the width and height of the printed layer, as well as the presence of cold seams between individual layers of the printed structure on the strength and bearing capacity of the forming elements of the permanent formwork was studied. The work execution is aimed at accelerating the introduction of advanced technologies in construction in terms of creating scientific and technical groundwork for the development of additive construction production and the development of the domestic regulatory and technical base in the field of construction 3D printing.