Effect of Ultrafine Additives on the Morphology of Cement Hydration Products

The present research is focused on the investigation of influence ultrafine additives structure formation hardened cement paste and establishment mechanisms morphological transformations, which determine properties hydrated products. In course research, modification ordinary Portland was performed by suspension multi-walled carbon nanotubes (MWCNTs), black (CB) paste, silica fume (SF). Scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) microanalysis, diffraction (XRD) analysis, thermal Fourier-transform infrared (FTIR) spectroscopy were used to study hydration morphology depends chemical reactivity additives, their geometry, genesis. action mechanism inert carbon-based pozzolanic considered. products formed in process both types are described. case MWCNTs CB surface without strong adhesion observed, whereas addition SF separately together with MWCNTs, noted.