Relationship Between the Vertical Profile of Marine Aerosol Salinity and the Chloride Accumulation into Concrete

This paper analyses the influence of height from the ground on the vertical distribution of marine aerosol salinity. It considers altitudes between 1.5 and 10 m from the ground in a region under the major influence of surf produced aerosol and its impact on chloride accumulation into concrete along time. Results show that the rate of chloride deposition on wet candle markedly decreases when the altitude increases and this relationship can be represented by a power decay function. The impact of the salinity decrease with altitude on chloride accumulation into concrete is significant and can surpass the level of 50% after 50 years of exposure. As a consequence, this behaviour should be considered when analysing the performance of vertical concrete structures placed in marine atmosphere zone.

Automated summary

This paper analyses the influence of height on the vertical distribution of marine aerosol salinity. It considers altitudes between 1.5 and 10 m from the ground in a region under the major influence of surf produced aerosol and its impact on chloride accumulation into concrete over time. Results show that the rate of chloride deposition decreases with increasing altitude and this trend can be described by a power decay function. The decrease in salinity with altitude has significant implications for chloride accumulation in concrete and can exceed 50% after 50 years of exposure. Therefore, this behavior should be taken into account when analyzing the performance of vertical concrete structures in marine atmospheres.