Formation of structure and properties of concrete modified with dispersed admixtures

The authors analyze the concrete with compact structure based on Portland cement modified with carbon nanodisperse systems. Carbon nanotubes GraphistrengthTM produced by Arkema Inc. dispersed in a hydrodynamic installation in a solution of a surfactant polypiast СП-1 were used as disperse modifying additives. Increase of strength of fine concrete in bending by 45.1 %, compression by 96.8 % is noticed. Increase of the concrete strength is associated with the change of morphology of crystalhydrate new formations providing formation of a low-defect structure of a cement matrix with high density.