TY JOUR TI MECHANISM OF CHEMICAL INTERACTION OF ORGANIC ADDITIVE OF BIOLOGICAL ORIGIN WITH COMPONENTS COMPOSITE BINDER KW organic additives of biological origin KW cysteine KW amino groups KW polypeptides KW amino acids KW contact angle KW structure of cement stone JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Mahortov, D.S. AU Zagorodnyuk, L.H. AU Nasonova, V.V. AU Sumskoy, D.A. PY 2024 IS 9 PB Belgorod State Technological University named after V.G. Shukhov