Degradation of RC structures due to chloride penetration followed by reinforcement corrosion is a serious problem in civil\nengineering. The numerical simulation methods at present mainly involve finite element methods (FEM), which are based on\nmesh generation. In this study, element-free Galerkin (EFG) and meshless weighted least squares (MWLS) methods are used to\nsolve the problem of simulation of chloride diffusion in concrete. The range of a scaling parameter is presented using numerical\nexamples based on meshless methods. One- and two-dimensional numerical examples validated the effectiveness and accuracy of\nthe two meshless methods by comparing results obtained by MWLS with results computed by EFG and FEM and results calculated\nby an analytical method. A good agreement is obtained among MWLS and EFG numerical simulations and the experimental data\nobtained from an existing marine concrete structure. These results indicate that MWLS and EFG are reliable meshless methods\nthat can be used for the prediction of chloride ingress in concrete structures.
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