Abstract
The deterioration phenomena of concrete members, such as AAR, carbonation and chloride attack are closely related to ion migration in and through concrete. Also, electrically controlling the movement of ions in and through concrete is expected to be preventing or rehabilitating concrete structures damaged by chloride attack or carbonation (desalination, re-alkalization, etc.). However, the mechanism of electro-migration in and through concrete is still unclear.
In this paper, as one step to clarify the complete mechanism of electro-migration, the authors intended to clarify that the interfacial transition zones between paste and aggregates are the main passage ways of ions in electro-migration through the investigation of the influence of aggregate and curing conditions on the mobility of ion through mortar or concrete specimens.
