EVALUATION OF BENDING CAPACITY OF PRETENSIONED PC GIRDERS SUBJECTED TO COMBINED CHLORIDE ATTACK AND ASR DETERIORATION

Abstract

 This study focuses on removed pretensioned PC girders with and without concrete spalling and corrosion of tendons due to chloride attack in the coastal area of Ishikawa Prefecture. Static loading tests or numerical analyses were conducted to evaluate the bending load carrying capacity of these girders with and without concrete spalling and corroded tendons. The results of the material investigations and static loading tests indicated that ASR was the cause of the reduction in load carrying capacity of the girder without significant concrete spalling and tendons corrosion. Furthermore, numerical analysis revealed the relationship between the extent of tendons corrosion and the bending load carrying capacity of the girder with noticeable concrete spalling and corroded tendons due to chloride attack.