Modified Concrete with Nano-Disperse Additives
Issues of the use of nano-disperse silica (NS) obtained at the electron accelerator in the technology of binders and concrete are considered. The comparative analysis of efficiency ofusing NS in cement with the industrially produced pyrogenic NS “HDK H20 Wacker” is presented. Indexes of specific electric conductivity and pH of water with additives Tarkosil-05and Tarkosil-20 are determined by the method of conductometry. The change in the phase composition and microstructure of cement stone is shown with the help of RFAand EMA methods. Concrete compositions with NS with improved physical-mechanical and construction-operational characteristics are produced.