TY JOUR TI DEFORMATION OF HORIZONTAL JOINTS’ MORTAR OF MASONRY UNDER COMPRESSION KW strength KW deformability KW masonry KW mortar KW horizontal joints KW compression KW reduction of deformation modulus KW spatial stress state KW change of deformation modulus JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Donchenko, O.M. AU Degtev, I.A. AU Tarasenko, V.N. AU Zhiharev, N.D. PY 2019 IS 4 PB Belgorod State Technological University named after V.G. Shukhov