Research Progress of Concrete Structure Cracking Caused by Non-Uniform Corrosion of Steel Bars
In the service life of reinforced concrete structures，the corrosive medium enters the concrete and causes the corrosion of steel bars，and the corrosion products produce compressive stress on the surrounding concrete due to the volume expansion.This ultimately induces tensile stress in the concrete p...
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Department of Materials Protection
2025-07-01
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| Series: | Cailiao Baohu |
| Subjects: | |
| Online Access: | http://www.mat-pro.com/fileup/1001-1560/PDF/20250703.pdf |
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| Summary: | In the service life of reinforced concrete structures，the corrosive medium enters the concrete and causes the corrosion of steel bars，and the corrosion products produce compressive stress on the surrounding concrete due to the volume expansion.This ultimately induces tensile stress in the concrete protective layer，causing cracking，which further affects the load-bearing capacity and service life of the concrete structure.Due to the characteristics of medium erosion，the chloride ion concentration on the side closer to the protective layer is higher than that on the side farther from it，resulting in non-uniform corrosion of steel bars.Therefore，it is of great significance to analyze the effects of non-uniform corrosion on the cracking of protective layers and the impact of the corrosion of steel bars on the durability of concrete through experiments and theoretical analysis.Based on existing research achievements both domestically and internationally，this paper provided a detailed review of current studies on concrete cracking induced by non-uniform corrosion from three key aspects:the obtained rust layer distribution model of steel bars，the rust expansion force model，and the rust expansion cracking model.Furthermore，the limitations of current research and future development trends were analyzed，aiming to provide reference for the study of concrete cracking caused by non-uniform corrosion of steel bars. |
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| ISSN: | 1001-1560 |