CORROSION-INDUCED CRACKING OF REINFORCED CONCRETE BEAM: EXPERIMENTAL STUDY
Corrosion-induced damage is recognized as one of the major causes of deterioration of reinforced concrete (RC) structures worldwide. In order to assess the effect of corrosion quantitatively, an experimental study was conducted using an accelerated corrosion testing technique. Six RC beam specimens were fabricated and placed in a container with a 5% NaCl solution. A constant corrosion rate of approximately 100 was applied to accelerate the corrosion process in chloride contaminated concrete. Vibration tests were carried out fortnightly to study its effect on the natural frequency of RC beams. One beam was taken out and broken every four weeks. The mass losses of steel rebar were measured to determine the corrosion state. The results are used to develop a model which describes the relationship between the crack width and the corrosion loss. Experimental results show that the natural frequency changes with corrosion and the proposed empirical model is a promising tool to predict the corrosion state of RC structures based on the crack width.
reinforced concrete corrosion cracking natural frequency
Ying Wang Xinqun Zhu Hong Hao Mark G. Stewart
School of Civil and Resource Engineering, the University of Western Australia, WA 6009, Australia;Sc School of Civil and Resource Engineering, the University of Western Australia, WA 6009, Australia Centre for Infrastructure Performance and Reliability , The University of Newcastle, NSW 2308, Austr
国际会议
北京
英文
1741-1746
2008-10-27（万方平台首次上网日期，不代表论文的发表时间）