STUDY OF CORROSION RESISTANCE OF NANOMODIFIED CONCRETE IN BIOLOGICALLY AGGRESSIVE ENVIRONMENTS

The impact carried out at the atomic-molecular level in the development of nanocomposites is a relevant area of modern research in construction materials science.One of the key methods for creating nanocomposites is their modification using various additives and specialized technological processes.This article presents the results of testing concrete modified with nanoparticles in the context of studying their biological corrosion, which is one of the factors affecting the durability of concrete and reinforced concrete structures.As part of the experimental study, microbiological diagnostics was carried out, as a result of which the composition of biofilms was determined.The results of strength tests demonstrated a significant effect of biocorrosion on the strength characteristics of nanomodified cement concrete.Graphs displaying changes in the concentrations of Ca2+ cations in the liquid phase showed their increased values compared to conventional uninfected concrete, which is associated with the products of microorganisms.Measurements of the pH level of concrete samples showed that the influence of a biologically aggressive environment leads to an increase in the pH level.