Abstract
Electrochemical techniques such as desalination and realkalization have been developed as the repair methods for reinforced concrete structures deteriorated by chloride attack or carbonation of concrete. Recently, these techniques have been applied to many actual structures. On the other hand, it has been suggested that there is some risk to accelerate the ASR expansion of concrete if the applying structures contain the reactive aggregate. In this study, the degree of ASR expansion accelerated by applying electrochemical repair method was investigated experimentally and at the same time, the suppression effect of ASR expansion due to the electrochemical treatment using the electrolyte containing lithium ions was also examined. The result of this study was that remarkable acceleration of ASR expansion due to applying electrochemical treatment was not observed and the ASR expansion of the specimens applied electrochemical treatment using lithium rich electrolyte tended to be smaller than the expansion of non-treated specimens.
