TY JOUR TI THE INFLUENCE OF MICROORGANISMS ON THE PHYSICAL AND MECHANICAL PROPERTIES OF CONCRETE KW microbiological corrosion KW concrete corrosion KW concrete strength KW concrete porosity KW concrete density KW water absorption of concrete JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Strokin, K.B. AU Novikov, D.G. AU Konovalova, V.S. AU Kasiyanenko, N.S. PY 2021 IS 6 PB Belgorod State Technological University named after V.G. Shukhov