TY JOUR TI AIR ENTRACTION PORES IN THE STRUCTURE OF AERED CONCRETE KW air entrainment pores KW cellular concrete KW aerated concrete mixture KW gas bubble KW cellular concrete mixture KW porous structure JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Suleymanov, K.A. PY 2023 IS 8 PB Belgorod State Technological University named after V.G. Shukhov