TY JOUR TI STRENGTH DESIGN OF NORMAL SECTIONS OF THE PRECAST-MONOLITHIC SLABS OF FRAME BUILDINGS KW precast-monolithic slab KW reinforced concrete permanent formwork KW stress-strain behavior of a section KW non-linear deformation model KW creep flow JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Bogacheva, S.V. AU Nikulin, A.I. PY 2018 IS 3 PB Belgorod State Technological University named after V.G. Shukhov