Study on the non-uniformity of rust layer and residual rebar caused by pitting corrosion in mortar
Zhang X. Jiang C. Chen Y. Ali Memon S. Lun P. Sun H. Ren J. Wang J.
24 November 2023Elsevier Ltd
Construction and Building Materials
2023#406
Rebar corrosion and non-uniformity in remaining rebar and corrosion products are critical factors influencing the durability of reinforced concrete structures. This study investigates pit corrosion non-uniformity by designing mortar- rebar samples of three different cover thicknesses. The non-uniformity of rebar and corrosion products distribution is explored using μCT techniques, and parameter variation laws are derived under different corrosion levels. This study proposes a novel non-uniform rust layer model based on a sine function, which is compared with the existing linear decreasing, semi-elliptic and Gaussian function models. The proposed model provides high goodness-of-fit results and accurately simulates the morphological properties of actual rust layers.
Non-uniform, Pitting , Rebar corrosion , Rust layer , X-ray microtomography
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College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, 518060, China
Department of Civil Engineering and Environmental Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan, 010000, Kazakhstan
Department of Civil, Environment, and Architectural Engineering, University of Colorado Boulder, Boulder, 80309, CO, United States
Department of Architecture and Civil Engineering, Guangzhou University, Guangzhou, 510006, China
College of Civil and Transportation Engineering
Department of Civil Engineering and Environmental Engineering
Department of Civil
Department of Architecture and Civil Engineering
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