Abstract
In this study, chlirode removal efficiency and repair effect due to applying desalination to chloride contaminated reinforced concrete containing fly ash or blast-furnace slag were evaluated. Moreover, ionic composition in the pore solution extracted from mortar specimens with high-pressure was measured to investigate the influence of mineral admixture on binding of Cl-, electrophoresis behavior of Cl- and corrosion environment of steel. As the results of this study, chloride removal efficiency of non-carbonated concrete was decreased by admixing mineral admixture because binding rate of Cl- was increase and electrophoresis of Cl- was delayed. On the other hand, chloride removal efficiency was improved by carbonation of concrete because fixed Cl- was released by the carbonation and such released Cl- was extracted easily.
