Experimental Research on the Bonding Between Corroded Reinforcement Bar and Concrete
WU Qing
YUAN Ying-shu
JIANG Jian-hua
ZHU Jin
JIANG Jing
Abstract：Pull out tests were done on different diameter plain or ribbed reinforcements covered to different depths. The average bond stress-slip curves for the different specimens as well as the process by which they were destroyed were obtained. The mechanism by which deteriora-tion of bonding between corroded reinforcement bar and concrete occurs was analyzed. The in-fluence of different accelerated corrosion methods, the degree of corrosion, the bar diameter, the cover depth and the stirrup on bonding performance was studied. The results show that bonding is initially enhanced by an increase in corrosion. Then the bond strength gradually de-teriorates. Accelerated corrosion methods also have a great impact on the bond quality. The ul-timate load of specimens after electronic-current accelerated corrosion is much lower than that of specimens treated in an artificial climate even with the same starting crack width.
Keywords：corrosionreinforced concretebond mechanismexperimental research
Publication Date：2009-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 685-691 )