TY JOUR TI SURFACE PHENOMENA IN MODIFIED CEMENT DISPERSIONS AND THEIR ROLE IN THE MECHANISM OF ACTION OF POLYFUNCTIONAL MODIFIERS KW modifiers of concrete KW polyfunctional modifiers KW plasticizing activity KW adsorption-active groups KW surface tension KW surface activity KW adsorption KW peptization KW monomolecular layer KW phase boundary KW molecular weight KW mechanism of action JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Kosukhin, M.. AU Kosukhin, A.. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov