Analysis of Climatic Characteristics and Multiple Corrosion Factors of Salty Spray Environment in Shenzhen

Abstract

In the coastal salt fog area, there are many sources of atmospheric corrosion in the ocean. For the concrete structure, the effects of carbonization, sulfate, chloride and other complex effects should be considered. The experiment was carried out by setting up a station in the coastal salt fog area of Shenzhen, and the carbon dioxide and chloride ion content in the atmosphere were observed on the spot. The study found that the coastal environment of Shenzhen has the characteristics of high temperature and high humidity, and the rainfall is large. The average temperature in the past five years has reached 23.5 degrees Celsius and the average humidity has reached 75.4%. The atmospheric carbon dioxide content in the coastal salt spray area is higher in spring and winter, and lower in summer and autumn. The atmospheric chloride ion concentration in the coastal salt spray area is characterized by high winter and low summer temperatures throughout the year, and the annual chloride ion concentration fluctuates greatly.