TY JOUR TI THE INFLUENCE OF THE THICKNESS OF THE CEMENT SHEATH IN THE CONCRETE AND CEMENT PARTITIONS IN THE FOAM CONCRETE TO SHRINKAGE DEFORMATION KW shrinkage deformation KW tangential stress KW radial stress KW heavy concrete KW foam concrete JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Anikanova, T.V. AU Rahimbaev, S.M. PY 2017 IS 2 PB Belgorod State Technological University named after V.G. Shukhov