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Estimation of Service Life for Expressway Bridge Subjected to Chloride Ingress from De-icer
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 Title & Authors
Estimation of Service Life for Expressway Bridge Subjected to Chloride Ingress from De-icer
Lee, Honam; Jeon, Chanki; Kim, Juho; Shim, Jaeyeong; Jeon, Inkyu;
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This paper aims to estimate the service life of the target bridge structures subjected to chloride ingress from de-icer, which is used for safety of vehicles in winter, by investigating the chloride ingress into concrete. In this study, the 10-year-old bridge structures were investigated by measuring the chloride along the depth from the exposed surface to derive the surface chloride concentration and the diffusion coefficient for the prediction of service life. The service life of each measured point on the structures were estimated with the surface chloride concentration and the diffusion coefficient by using Life-365 software. As a result, it was estimated for all measured points to have over 100-year service life. Furthermore, the diffusion coefficient and the service life from the measured data were compared to another method calculated with the concrete mix, considering the time dependency of diffusion coefficient.
De-icer;Chloride Attack;Prediction of Service Life;Diffusion Coefficient;
 Cited by
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