Stochastic Finite Element Analysis of Chloride Penetration into Concrete Subjected to De-icing Salt Spray

초록

This paper addresses a finite element analysis of chloride penetration into concrete subjected to deicing salt, taking the mechanisms related with chloride transport including heat transfer and moisture migration into account to predict the ingress of chloride ion due to de-icing salt. A stochastic finite element analysis, based on the Monte-Carlo simulation with Latin-Hypercube sampling, is applied to account for the uncertainties of the main variables. Time-variant variables, such as temperature and relative humidity, were generated randomly by the Karhunen-Lo?e expansion to incorporate their stochastic nature, based on the actual weather data. Also, a hypothetical model for estimating the surface chloride concentration was proposed and discussed.