Bryansk, Bryansk, Russian Federation
The influence of titanium dioxide (TiO2) rutile modification, dispersed with ultrasound in water-ethanol medium, on the structure of cement stone in the daily age. Found that ultrasonic dispersion of TiO2 leads to the formation of particles with a Zeta potential -(42-44) mV and an average diameter 396-398 nm, with about 40 % of the particles has a diameter of 60-100 nm. The increase in negative charge at the interface, «particles of TiO2 – water-alcohol environment» and reducing their size to the nanorange as the result of ultrasonic treatment cause directional effects of dispersed titanium dioxide on structure formation of cement stone, which is the intensive heterogeneous nucleation of ettringite and portlandite in the daily age.
titanium dioxide, rutile modification, hydration, cement stone, ettringite, portlandite, structure.
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