TY JOUR TI HYDROPHOBIZATION OF FINE CHALK KW chalk KW calcium carbonate KW filler of composite materials KW hydrophobization KW adsorption KW desorption KW texture characteristics JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Krivenko, Y.Y. AU Vezentsev, A.I. PY 2021 IS 6 PB Belgorod State Technological University named after V.G. Shukhov