COMPARATIVE STUDY ON CORROSION MECHANISM OF HIGH-STRENGTH AND GENERAL STEEL BARS

摘要

Along with the popularize of high-strength steel bars,the corrosion mechanism,the corrosion extent and the mechanical performance of them which affect the reliability of RC concrete greatly are attracting the researchers' attention. The corrosion of highstrength and general steel bars under the same conditions are studied comparatively in this paper. The differences and their causes of corrosion are analyzed through combined with the different composition and manufacturing technology by contrasting the corrosion rate and the degeneration of mechanical performance of HRB335,HRB400 and HRB500 with the same diameter in the same concentration,cathode,electric current and time,which can be the references for the selection,the durability research and the engineering of highstrength steel bars.