Modeling the Concrete Bio Destruction Process at the Textile Industries
The fungal corrosion of concrete was studied using a special laboratory setup using a model environment. The proposed installation allows in the shortest possible time without the use of allergenic and toxic components to simulate conditions and to investigate the nature of fungal corrosion of concrete structures operating at textile enterprises. Using a laboratory setup, it was shown that the destruction of the concrete samples under study was the result of acid corrosion, which is the main destructive factor in the life of fungi. The effect of organic acids on concrete led to an increase in the porosity of the material, a decrease in its density and loss of strength. Based on the data obtained, a fungal corrosion mechanism of concrete is established, consisting of two stages. The first stage of fungal corrosion is acidic, associated with the accumulation and release of organic acids and their interaction with concrete components with the formation of soluble reaction products. The second stage of fungal corrosion is mechanical, associated with an increase in porosity, a decrease in the density and strength of concrete. Based on the data obtained, the optimal methods for protecting materials from fungal corrosion are substantiated.