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http://dx.doi.org/10.11112/jksmi.2022.26.1.1

Evaluation on De-Icing Salts Laden Environment of Road in Seoul  

Yoon, In-Seok (Civil Engineering, Induk University)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.26, no.1, 2022 , pp. 1-9 More about this Journal
Abstract
De -icing salts have been used commonly in areas where snow or ice is a seasonal safety hazard for roadway, however, the salts is one of main causes on serious deterioration of road infrastructures in crowded urban city like Seoul. In order to establish maintenance strategy of road infrastructures under de-icing salts laden environment, it is necessary to examine environmental characteristics and its response to the existing facilities. The purpose of this study is to evaluate the deterioration environment of road infrastructures. Additional purpose is to develop a design model and details for durability design of infrastructures under de-icing salts laden environment, considering mainly a build-up rate of surface chlorides. Concentration of external chloride solution and surface chloride content were calculated at the level of average de-icing salts for 5 years, ratio of auxiliary road of 17.5 to 30%, and effective exposure area to snow 50 to 80%. The chloride build-up rate was 0.073 ~ 0.077% / year and the maximum surface chloride content was calculated to be 2.2 ~ 2.31% by concrete wt. This study is expected to be used for establishing integrated strategy of road infrastructures, such as predicting chloride profiles or degree of chemical corrosion to exposure concrete.
Keywords
De-icing salts; External chloride solution; Surface chloride content; Deterioration; Chloride build-up rate;
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