SIMULATION OF CHLORIDE PENETRATION THROUGH CONCRETE BY FEM INVOLVING STOCHASTIC VARIABLES

Abstract

 This study focused on inhomogeneity of concrete and influence of material properties of concrete on chloride penetration was analytically investigated. Surface chloride concentration of concrete, porosity and moisture content of both cement paste and interfacial transition zone (ITZ) were assumed to be uncertain. Stochastic FEM analysis involving these variables was carried out and unstable chloride penetration in practice was simulated. Parametric study recognized the variables and its standard deviation as appropriate. Consequently, it was estimated by the FEM analysis involving material variation that apparent diffusion coefficient was considerably affected by the variables of water-cement ratio (W/C) and moisture content and it converged a certain value with the passage of time.