Estimation of Airborne Salt Level by use of Wind Direction and Speed Data in Sanin

Abstract

The authors invested efforts to develop a procedure of estimating the airborne salt level on the basis of available meteorological information. In this study, we analyzed wind direction and speed data provided by the Meteorological Observatory in Sanin to estimate the airborne salt level and compare with the monitoring data for the airborne salt level over 2 years in order to evaluate the estimation precision of the proposed method. The estimation results showed reasonable agreement with the measured airborne salt level. It is confirmed that the proposed concise evaluation procedure based on only wind direction and speed information is useful as estimation method of airborne salt level.

Probabilistic Prediction of Corrosion Damage of Steel Structures in the Vicinity of Roads

“…The dose-response function listed in EN ISO 9223 was derived under the assumption of the average annual deposition rate of chlorides being between 0.4 and 760.5 mg/(m 2 .d). Ten times the experimentally determined deposition rate of chlorides at the bridge in Ostrava, amounting to S d,c = 113.40 mg/(m 2 .d), is still significantly below the upper limit of the values used to derive the dose-response function [12]. That is why sensitivity analysis was also applied to higher values of chloride deposition (with a maximum corresponding to ten times the measured deposition rate), which all remained in the range of validity of the dose-response function (4).…”

“…[8][9][10]. Experimental measurements carried out at selected bridge structures and in their surroundings called attention to the fact that the quantity of deposited chloride ions spread in the air is also significantly impacted by the design of the bridge structure and the topography of the surrounding terrain [11][12][13].…”