Additive manufacturing technology of concrete products

Abstract

The article analyzes the use of 3D-printing technologies in the construction industry. The main trends in the development of this area related to the development of modern software for 3D printers, printer designs and forming extrusion heads of printers, and also to the development of formulations of building mixes used for 3D printing are noted. The relevance of the use of 3D printing technologies using concrete is conditioned by the creation of unique structural elements, objects of landscape gardening architecture or buildings. From the point of view of building materials science, this task includes considering technological factors, and, in particular, the requirements for the concrete mixture. The special attractiveness of these technologies is associated with the possibility of carrying out work on a construction site, with a high degree of mechanization of processes and with an increasing of labor productivity when performing construction and installation work. The purpose of the research described in the article is to develop a methodology for the selection of modifying additives and reinforcing fibers from the condition of obtaining products with the maximum coefficient of structural quality. The article outlines the features of the selection of the composition of concrete for the construction 3D printing. This mixture must have sufficient mobility for pumping it through pipes, set quickly and have good strength characteristics.