Experimental study on the rust expansion induced cover crack in reinforced concrete

Author(s): Qifang Liu, Kai Leung Ray Su
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 1
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 323-328
Total Pages: 6
Language : English

Abstract: Predicting the time to corrosion induced crack of surface cover is important for assessing the service life of reinforced concrete (RC) structures. However, existing analytical models cannot accurately predict it as the deformation of rust is significantly underestimated. This study aims to investigate the expansive behavior of rust produced in RC structures by an accelerated corrosion test. The expansion displacement of rust is captured by digital image correlation. By using the displacement compatibility condition on the concrete/steel interface, the deformation of rust is determined. And eventually, the Young’s modulus of rust is back calculated.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00

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