TY JOUR TI Modeling of changes in the strength parameters of the monolithic bond of layers in three-layer reinforced concrete structures under operational influences KW energy efficiency KW lightweight concrete KW sandwich structures KW climatic tests KW concrete with low transcalency KW strength KW polystyrene aggregate concrete JO Construction and Architecture AU Korol, O.A. AU Berlinov, M.V. AU Batrakov, M.A. PY 2023 IS 11 PB Publishing Center RIOR