Abstract
Concrete floors are most commonly used in animal housing. However, the specific environment of livestock buildings (moisture, urine, disinfectants) has a negative effect on concrete and leads to its corrosion. The influence of chemical and physical factors on concrete is reinforced by the development of microorganisms, which quickly adapt and use concrete as a living environment. To reduce the influence of an aggressive environment on the concrete floor, an experimental mixture of dry disinfectants was proposed. The components of the disinfection mixture have been selected taking into account the safety for animals and humans. The TPD-MS method was used to determine the change in the chemical composition of concrete. To study the microstructure of concrete, the method of scanning electron microscopy was used. Microbiological studies revealed bacteria A. Thiooxidans, S. aureus, E. coli, S. enteritidis, S. Сholeraesuis, C. Perfringen and micromycetes of the genus Cladosporium, Fusariums, Aspergillus, which contribute to the development of biological corrosion of concrete in livestock buildings. The fact of the negative impact of concentrated disinfectants on the structure of concrete was also established. As a result of the studies carried out, it was proved that a mixture of dry components for disinfection exhibits antimicrobial properties to varying degrees to the strains of field isolates of bacteria and fungi isolated in a pig-breeding farm. It was found that when using the proposed mixture of dry disinfectants in the research room of the pigsty, the relative humidity decreases by 38.5 %; ammonia content – by 46.2 %; hydrogen sulfide – by 57.8 %; microbial bodies – by 74.7 %, compared with the control room. It has been experimentally proven that the proposed mixture of dry disinfecting components has hygroscopic and antimicrobial properties and is promising for use in livestock farms.
Highlights
The animal breeding room is made of concrete
As a result of the studies carried out, it was proved that a mixture of dry components for disinfection exhibits antimicrobial properties to varying degrees to the strains of field isolates of bacteria and fungi isolated in a pig-breeding farm
The production of concrete structures remains popular and is constantly being improved. It remains to solve a number of problems with chemical and biological corrosion of Eastern-European Journal of Enterprise Technologies ISSN 1729-3774
Summary
The animal breeding room is made of concrete. Despite the reliability of the building material, there are certain factors of its destruction, which lead to a decrease in the service life. When keeping animals on the floor, let’s use a deep bedding of straw or sawdust All these measures do not generally solve the problem of concrete corrosion. In order to reduce the corrosive effect of high humidity, biogenic secretions, microorganisms and chemically aggressive compounds on concrete floors, it is proposed to use a mixture of dry disinfectants based on (%): chloramine – 0.2; thymol – 0.1; copper sulfate – 2.0; iron sulfate – 1.0; calcium sulfate dihydrate – 45.0; zeolite – 42.0; kaolin – 9.6. The relevance of such research lies in the development and introduction into production of a mixture of dry disinfecting synergistically selected components to prevent the occurrence of biological and chemical corrosion of concrete floors in livestock buildings
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