Application of Nanoadditives of Technogenic Origin as Anhydrite Composite Modifiers
This article is devoted to the development of composite anhydrite astringent, modified by nanoadditives of technogenic origin. The galvanic sludge powders which contained grains of nanometric size were used as additives. The analysis of chemical composiyion and proprieties of powders allowed making a conclusion that these powders can be applied as modifiers for hydratation and anhydrite astringent solidification. Для повышения активности нанодисперсные порошки подвергались термической обработке при температурах 800 ? 1 000 ?С. In order to boost the activity of nanopowders, they were exposed to thermal treatment at temperatures from 800 to 1000 ?C. During research processes the positive influence of galvanic sludge nanopowders on physical and mechanical proprieties and on structurization of anhydrite composite was identified. As a result the optimal concentration of nanopowder modifiers in anhydrite composite astringent was determined.