The paper discusses a negative effect of metallurgical waste on the ecosystem, costs and benefits of a potential use of solid metallurgical waste products in production of building materials with the purpose to reduce their harmful effect on the environment and preserve nonrenewable natural resources. The most usable products a component of which is metallurgical waste, such as slag concrete and blocks, as well as break stone are compared with products made of natural raw materials. The most appropriate application fields with the minimal harm to human health and nature are recommended.

The results of the study of the dynamics of building a 3D printer manipulator type, the relevance of the application of 3D printing in construction, its development, and methods of use, comparison of technology of building 3D printers with traditional methods of erecting concrete structures, the benefits of the economic component of this technology; the choice of the type of the investigated devices and the question of the research; brief description of the device 3D printer, its components and how it works; illustrations of the product and graphic analysis of his actions; the developed model 3D printer, which allows to analyze dynamic processes of interaction of the moving formwork installation concrete mixture; at 3D printing construction products made of cold forming products with the use of sliding formwork; compacting the mixture is performed by a vibrator unit; the values of the oscillations of the trolley 3D printer; received a graphics oscillatory process of 3D printing and the magnitude of the electric current in starting and operating modes.

This article presents the results of experimental studies aimed at improving the physicomechanical properties of effective hollow ceramic stones using various technological methods that will disperse, homogenize and structure the ceramic mixture by introducing industrial waste with high alumina content, dispersed reinforcement, and also mechanical activation of the molding material, accompanied by the fragmentation of clay particles to a colloidal degree of dispersion, allows eliminating the aging process. The main molding characteristics of the investigated mixtures were determined, X-ray phase analysis of ceramic masses and a shard of the control composition was performed and after dispersion, activation modes were worked out, strength characteristics of ceramic samples made of dispersed clay raw materials were determined.