The Results of 45 Years of Atmospheric Corrosion Study in the Czech Republic

Abstract

Atmospheric corrosion poses a significant problem with regard to destruction of various materials, especially metals. Observations made over the past decades suggest that the world’s climate is changing. Besides global warming, there are also changes in other parameters. For example, average annual precipitation increased by nearly 10% over the course of the 20th century. In Europe, the most significant change, from the atmospheric corrosion point of view, was an increase in SO2 pollution in the 1970s through the 1980s and a subsequent decrease in this same industrial air pollution and an increase in other types of air pollution, which created a so-called multi-pollutant atmospheric environment. Exposed metals react to such changes immediately, even if corrosion attack started in high corrosive atmospheres. This paper presents a complex evaluation of the effect of air pollution and other environmental parameters and verification of dose/response equations for conditions in the Czech Republic.

Characterization of Corrosion Products on Weathering Steel Bridges Influenced by Chloride Deposition

“…In addition, the abutments of bridge No. 1 stand in close proximity to the highway, which makes is somewhat similar to the so-called "tunnel-like conditions" and the associated increased deposition of chlorides on the structure [13][14][15], see Figure 4. …”

“…In addition, the abutments of bridge No. 1 stand in close proximity to the highway, which makes is somewhat similar to the so-called "tunnel-like conditions" and the associated increased deposition of chlorides on the structure [13][14][15], see Figure 4. The general conditions for the development of corrosion products on typical surfaces of the bridge constructions are very similar-the bridges are situated in the same location, with just minimal differences in orientation.…”

“…It had the greatest impact on steel corrosion rate in the Czech Republic between 1970 and 1980. The subsequent introduction of desulphurization units brought a substantial reduction of SO2 concentration in the atmosphere and the corrosion losses of carbon steel in the Czech Republic, current values stay below 10 µg/m 3 [6][7][8], see Figure 1. Due to the notable decline in SO2 concentrations, chlorine ions (Cl − ) originating from de-icing salt used for winter road maintenance have become much more important factors of corrosive damage.…”

Tropical/non‐tropical marine environments impact on the behaviour of carbon steel and galvanised steel

“…However, the corrosion behaviour of unprotected steel depends on: atmospheric pollution (chloride and sulphur dioxide content, among others), time of wetness (TOW), amount of rainfall, wind speed and direction, angle of exposure and the characteristics of the corrosion product formed. It is therefore important to classify the aggressiveness of the environment at a site where a carbon steel structure is to be installed …”

Measuring the Willingness to Pay for Improved Air Quality: A Contingent Valuation Survey

“…Air pollution also affects visibility [17] and materials [18][19] (including historical buildings and monuments) [20][21]. Tidblad et al (2016) showed the results of research on various corroded materials at 10 locations in Kathmandu (Nepal) related to SO 2 , NO 2 , O 3 , HNO 3 , and PM concentrations and climatic factors, and compared the results with a general pattern from exposures at different sites in Asia, Africa, and Europe [20].…”