Abstract
Additive technologies meet the requirements of the modern technological stage, which applies to all areas industrial activities. Construction using additive technologies is actively developing and this technology has been introduced into production. All this makes 3D concrete printing a relevant and promising direction for the modernization of the construction industry. Concrete mixtures with certain characteristics are used as the “ink” for the construction 3D-printers. In this paper, we investigate the rheological properties of mortars for construction. We also determined the effectiveness of the mechanical activation of the initial components of the mixture, evaluated its effect on the rheological properties and the setting time of the mortar. The optimal values of the dynamic shear stress for the compositions for construction 3D printing are calculated.
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