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A platform for research: civil engineering, architecture and urbanism
Experimental investigation of process of corrosion-induced cover delamination using digital image correlation
Highlights Cover delamination is experimentally investigated with digital image correlation. Entire process of cover delamination is experimentally recorded for the first time. Crack opening displacement of the delamination cracking is quantitatively analyzed. Concrete expansion at the steel/concrete interface are measured with DIC. Corrosion-caused uplifting of the cover is first observed.
Abstract Cover delamination caused by the corrosion of multiple rebars is one of the most predominant deterioration problems of reinforced concrete (RC) structures. To date, there has been little experimental research on cover delamination, and in the few studies that have focused on this issue, different types of failure, such as cracking, spalling and delamination, are not clearly specified. In this study, the mechanism and process of cover delamination are experimentally investigated by using accelerated corrosion tests together with the digital image correlation (DIC) method and the entire process of corrosion-induced cover delamination is experimentally recorded for the first time. The process of the uplifting of the concrete cover is recorded. The crack opening displacement from the delamination cracking is quantitatively analyzed through DIC. Furthermore, the new test results have been used to validate a previously proposed cover delamination model.
Experimental investigation of process of corrosion-induced cover delamination using digital image correlation
Highlights Cover delamination is experimentally investigated with digital image correlation. Entire process of cover delamination is experimentally recorded for the first time. Crack opening displacement of the delamination cracking is quantitatively analyzed. Concrete expansion at the steel/concrete interface are measured with DIC. Corrosion-caused uplifting of the cover is first observed.
Abstract Cover delamination caused by the corrosion of multiple rebars is one of the most predominant deterioration problems of reinforced concrete (RC) structures. To date, there has been little experimental research on cover delamination, and in the few studies that have focused on this issue, different types of failure, such as cracking, spalling and delamination, are not clearly specified. In this study, the mechanism and process of cover delamination are experimentally investigated by using accelerated corrosion tests together with the digital image correlation (DIC) method and the entire process of corrosion-induced cover delamination is experimentally recorded for the first time. The process of the uplifting of the concrete cover is recorded. The crack opening displacement from the delamination cracking is quantitatively analyzed through DIC. Furthermore, the new test results have been used to validate a previously proposed cover delamination model.
Experimental investigation of process of corrosion-induced cover delamination using digital image correlation
Zhang, Yanlong (author) / Su, Ray Kai Leung (author)
2021-10-15
Article (Journal)
Electronic Resource
English
Experimental study of corrosion-caused corner cracking using digital image correlation
| Online Contents | 2022