Modification of Fine Multicomponent Concrete with Activated Component-Based Additive (2023-09)¶

In accordance with modern requirements for building materials, concrete must be of high quality with minimal resource waste. Using the initial components internal potential allows to create high-quality binder systems that contribute to the achievement of the required performance properties of concrete. The optimal mode for the preparation of an activated mixture based on special cement and sand of a certain granulometry was determined in this work by conducting a series of mechanical activation in a planetary mill. The influence of the degree of substitution of the cement-sand mixture with an activated component on the kinetics of the early strength gain of concrete was studied in order to analyze the applicability of the developed composition in 3D construction printing. The qualities of the modifier based on the activated cement-sand mixture were evaluated for the persistence of properties by the method of isothermal calorimetry. A multicomponent concrete with improved physical and mechanical properties was obtained, modified with a finely ground cement-sand composition of optimal content.