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The object of this study is the regularity of changes in the biogenic destructive effect of microorganisms on the concrete structural elements of livestock facilities due to the use of the original liquid phase mixture of disinfectant based on aldehyde and surfactant. Microorganisms use construction materials as a substrate for growth and nutrition; they produce citric acid, which leads to a change in the composition and morphology of hydrated cement new formations. The composition of the microflora of the pigsty has been determined, and the minimum concentration of disinfectant based on glutaraldehyde and didecyl dimethyl ammonium chloride was found. By the TPD MS method, a decrease in the intensity of carbon dioxide (CO2) release in concrete samples during the heating of the sample to 900 °C was proved, compared to the control intact corrosion sample. Electron microscopy of concrete samples shows the presence of destructive changes and colonies of micromycetes. It was established that calcite was intensively released in the control sample of concrete, which retained its integrity and was not subjected to corrosion when heated to a temperature of 600 °C. Electron microscopy confirms the preservation of the homogeneous structure of concrete. The use of a disinfectant based on glutaraldehyde and didecyl dimethyl ammonium chloride at a concentration of 1 % destroys colonies of micromycetes, 2 % – the shell of microorganisms, and 3 % – biofilm. Treatment of concrete with a disinfectant at a concentration of 3 % destroys microorganisms Aspergillus fumigatus and Penicillium oxalicum, inhibits the process of biological corrosion of concrete, and strengthens the structure of concrete. The results of the experiment can be applied to inhibit the corrosion of concrete and extend the life of building structures made of concrete through the use of a disinfectant based on aldehyde and didecyl dimethyl ammonium chloride at a concentration of 3 %., Об’єктом дослідження є закономірність зміни біогенного руйнівного впливу мікроорганізмів на бетонні конструктивні елементи тваринницьких приміщень за рахунок використання оригінальної рідкофазової суміші дезінфектанту на основі альдегіду та поверхнево-активної речовини. Мікроорганізми використовують будівельні матеріали як субстрат для росту та харчування, а також виробляють лимонну кислоту, яка призводять до зміни складу та морфології гідратних новоутворень цементу. Встановлений склад мікрофлори свинарника, та визначена мінімальна 1% концентрація дезінфектанту на основі глютарового альдегіду та дидецилдиметиламонію хлориду. Методом TPD MS доведено зменшення інтенсивності виділення двоокису вуглецю (СО2) у зразках бетону під час нагрівання зразку до 900°С, порівняно до контрольного неушкодженого корозією зразка. Електронна мікроскопія зразків бетону показує наявність деструктивних змін та колоній мікроміцетів. Встановлено, що у контрольному зразку бетону, який зберіг цілісність та не підданий корозії при нагріванні до температури 600°С інтенсивно вивільнялись кальцити. Електронна мікроскопія підтверджує збереження однорідної структури бетону. Використання дезінфектанту на основі глютарового альдегіду та дидецилдиметиламонію хлориду у концентрації 1% руйнує колонії мікроміцетів; у 2% – оболонку мікроорганізмів та у 3% – біоплівку. Обробка бетону дезінфектантом у концентрації 3% знищує мікроорганізми Aspergillus fumigatus та Penicillium oxalicum, гальмує процес біологічної корозії бетону та зміцнює структуру бетону. Результати проведеного експерименту можна приміняти для гальмування корозії бетону та подовження терміну експлуатації будівельних конструкцій виконаних з бетону за рахунок використання дезінфектанту на основі альдегіду та дидецилдиметиламонію хлориду у концентрації 3%

The object of this study is the regularity of changes in the biogenic destructive effect of microorganisms on the concrete structural elements of livestock facilities due to the use of the original liquid phase mixture of disinfectant based on aldehyde and surfactant. Microorganisms use construction materials as a substrate for growth and nutrition; they produce citric acid, which leads to a change in the composition and morphology of hydrated cement new formations. The composition of the microflora of the pigsty has been determined, and the minimum concentration of disinfectant based on glutaraldehyde and didecyl dimethyl ammonium chloride was found. By the TPD MS method, a decrease in the intensity of carbon dioxide (CO2) release in concrete samples during the heating of the sample to 900°C was proved, compared to the control intact corrosion sample. Electron microscopy of concrete samples shows the presence of destructive changes and colonies of micromycetes. It was established that calcite was intensively released in the control sample of concrete, which retained its integrity and was not subjected to corrosion when heated to a temperature of 600°C. Electron microscopy confirms the preservation of the homogeneous structure of concrete. The use of a disinfectant based on glutaraldehyde and didecyl dimethyl ammonium chloride at a concentration of 1% destroys colonies of micromycetes, 2% – the shell of microorganisms, and 3% – biofilm. Treatment of concrete with a disinfectant at a concentration of 3% destroys microorganisms Aspergillus fumigatus and Penicillium oxalicum, inhibits the process of biological corrosion of concrete, and strengthens the structure of concrete. The results of the experiment can be applied to inhibit the corrosion of concrete and extend the life of building structures made of concrete through the use of a disinfectant based on aldehyde and didecyl dimethyl ammonium chloride at a concentration of 3%.

The object of this study is the regularity of changes in the biogenic destructive effect of microorganisms on the concrete structural elements of livestock facilities due to the use of the original liquid phase mixture of disinfectant based on aldehyde and surfactant.Microorganisms use construction materials as a substrate for growth and nutrition; they produce citric acid, which leads to a change in the composition and morphology of hydrated cement new formations.The composition of the microflora of the pigsty has been determined, and the minimum concentration of disinfectant based on glutaraldehyde and didecyl dimethyl ammonium chloride was found. By the TPD MS method, a decrease in the intensity of carbon dioxide (CO2) release in concrete samples during the heating of the sample to 900 °C was proved, compared to the control intact corrosion sample. Electron microscopy of concrete samples shows the presence of destructive changes and colonies of micromycetes. It was established that calcite was intensively released in the control sample of concrete, which retained its integrity and was not subjected to corrosion when heated to a temperature of 600 °C. Electron microscopy confirms the preservation of the homogeneous structure of concrete.The use of a disinfectant based on glutaraldehyde and didecyl dimethyl ammonium chloride at a concentration of 1 % destroys colonies of micromycetes, 2 % – the shell of microorganisms, and 3 % – biofilm. Treatment of concrete with a disinfectant at a concentration of 3 % destroys microorganisms Aspergillus fumigatus and Penicillium oxalicum, inhibits the process of biological corrosion of concrete, and strengthens the structure of concrete. The results of the experiment can be applied to inhibit the corrosion of concrete and extend the life of building structures made of concrete through the use of a disinfectant based on aldehyde and didecyl dimethyl ammonium chloride at a concentration of 3 %.