BOND STRENGTH LOSS OF CHLORIDE INDUCED CORROSION REINFORCED OF CONCRETE SPECIMENS
The corrosion of steel reinforcement induced by chloride ions is a major problem in both marine environments and where de-icing salts are applied. In RC structures, the expansive nature of the corrosion process results in cracking of the concrete and eventually spalling. In order to investigate the effect of the surface crack width on bond strength, specimens comprising square prismatic sections containing steel reinforcement in the four corners have been subjected to a wet-dry cycle and corrosion has been accelerated by polarising the bar. The research studies the change of bond strength with corrosion for a 12mm bar size with different covers. This paper reports the results of bond strength for different levels of corrosion and with a 1 and 3 times cover ratio. The bond strength is assessed by means of pull out tests. The corresponding degree of corrosion in terms of the mass loss and surface crack width are also reported.
D.L. Tang R.J. Gravina D. Law T.C.K Molyneaux
RMIT University, Melbourne, Australia
国际会议
长沙
英文
1049-1054
2007-11-19（万方平台首次上网日期，不代表论文的发表时间）