Abstract
Nowadays, premature deterioration of concrete caused by chloride attack has become a severe problem. Desalination, which is an electrochemical treatment of chloride extraction from concrete, has been developed as an essential repair method. Steel bar embedded concrete acts as a cathodic electrode through desalination process and its potential is less than hydrogen occuring potential by electrolysis. Therefore, considering hydrogen embrittlement of prestressing steel bars, desalination has not been applied on prestressed concrete yet. In this study, diffusible hydrogen stored in notched and highly tensioned prestressing steel bars was investigated while desalination was continuously and intermittently applied on prestressed concrete.
