عنوان مقاله [English]
The importance of properly evaluating the strength of the concrete against the penetration of chlorine ions to achieve durable structures is highlighted. Different laboratory methods have been developed to determine the phenomenon of migration and diffusion of chlorine ions into the concrete mass. In this study, chlorine ion penetration decreased in samples containing nanosilica and nanomaterials. Decreasing the chlorine ion penetration means more resistance to penetration in concrete, which is higher in samples containing nano-copper than nano-silica. By adding polyurethane paint to the sample, chlorine ion penetration was reduced in all samples.