Abstract
Nowadays, early age deterioration of concrete to be 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 lower than hydrogen occuring potential by electrolysis. Therefore, considering hydrogen embrittlement of prestressing steel tendons, Desalination does not yet apply prestressed concrete. In this study, hydrogen stored in prestressing steel tendons and fracture surface of its steel were investigated while Desalination to be applied prestressed concrete.
