Accumulation of carbon dioxide in the volume of a civil defense facility and carbon dioxide corrosion

Abstract

The article discusses the problem of carbon dioxide (CO2) accumulation in civil defense facilities and its impact on building structures. The relevance of the study is due to the need to improve the safety of shelters, anti-radiation shelters operated in conditions of limited ventilation. As the increased concentration of CO₂ can pose a threat to the health of people staying in the shelter. The purpose of the study is to analyze the mechanisms of accumulation of (CO2) and carbon dioxide corrosion processes, as well as to find effective methods to prevent them. As a hypothesis, it is suggested that an increase in CO2 concentration in sealed rooms contributes to the carbonation of concrete and accelerated destruction of metal structural elements. To confirm the hypothesis, methods of theoretical analysis, comparative research of modern corrosion protection technologies and expert evaluation of design solutions were used. The study identified the main sources of carbon dioxide in protective structures, identified the factors affecting the rate of carbon dioxide corrosion, and proposed ways to minimize them. High humidity combined with carbon dioxide accelerates the corrosion of metal structures. The results obtained confirm the need to introduce innovative building materials, corrosion inhibitors, as well as monitoring systems, a well-thought-out ventilation system and regular diagnostics of the condition of structures, which will significantly extend the service life of civil defense facilities.