TY JOUR TI STUDY OF THE DEGRADATION OF THE NANOSTRUCTURE OF C-S-H-PHASES OF THE MODIFIED CEMENT STONE IN THE PROCESS OF DECALCIFICATION KW Modified cement stone KW sucrose KW polyvinyl alcohol KW nanostructure of C-S-H phase KW decalcification KW x-ray diffraction analysis KW electron microscopy examination JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Shoshin, E.A. AU Polyakov, A.V. AU Burov, A.. PY 2016 IS 1 PB Belgorod State Technological University named after V.G. Shukhov