ABSTRACT
Various types of concretes, saturated with a high concentration NaCl solution, were tested and then retested after two weeks for their conductivity values. The results showed that the presence of chloride ions at high concentrations substantially reduced the diffusibility of concrete in a short period of time. The magnitude of this effect differed significantly between cement types which, for this work, included ordinary portland cement (OPC) and OPC blends with fly ash and ground granulated blastfurnace slag (GGBS). The results indicate that advantage can be taken of different cement-based systems to control the rate at which chloride ions enter concrete. Keywords: Chlorides, concrete, effect on diffusion properties, microstructural changes.
