TY JOUR TI VERIFICATION OF THERMODYNAMIC PROPERTIES OF CALCIUM GIDROALUMINATOV AND THEIR PHASE TRANSITIONS KW gidroaljuminat calcium KW hexagonal and cubic Crystal system KW activity and concentration of ions KW verification KW izobarno-isothermal capacity JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Rahimbaev, S.M. AU Rahimbaev, I.S. AU Popesku, N.M. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov