Abstract:The correlation between two durability indexes,charge passed and gas permeability coefficient of ordinary concrete,was investigated,the relation between the amount of chloride-ion migration and charge passed,and the influences of micro-crack induced by drying on charge passed were also investigated.The results indicate that: the linear correlations between charge passed and gas permeability coefficient,and the decrement of chloride-ion in cathode cell were found.The percentage of the contribution of chlorid...