The Influence of Physical Activation of Portland Cement in the Electromagnetic Vortex Layer on the Structure Formation of Cement Stone: The Effect of Extended Storage Period and Carbon Nanotubes Modification

The article presents research of the influence electromagnetic vortex layer on structure formation cement stone during activation portland cement, both without additives and with carbon nanotubes modification. It has been shown that storage powders in open air for 60 days after mill leads to partial carbonization, wherein role absorption reducing super plasticizer additive is increased since there more uniformly localization surface particles. processing physical which accompanied by an increase amount heat generated hydration rate hydration. Thus, compositions activated isincreased 1.615 times at temperature thermostat 22 °C; 1.85 40 2.71 2.3 80 °C. modification stonewith nanotubes, was obtained from mill, a higher quantity silicate phase (by 12–39%), as confirmed decrease number portlandite these 8% comparison control composition.