A probabilistic stress-strain relationship model for steel bars including the non-uniform corrosion effects in chloride environments
An accelerated corrosion test followed by a monotonic tensile test was conducted on 66 groups of steel bar specimens with varying design parameters and the effects of key factors such as corrosion levels, steel bar diameters and corrosion conditions on the non-uniform corrosion and mechanical proper...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Case Studies in Construction Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509525000610 |
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| author | Qin Zhang Xinguo Guo Haitao Zhao Dongkang Hu Xianglin Gu Rongqing Li |
| author_facet | Qin Zhang Xinguo Guo Haitao Zhao Dongkang Hu Xianglin Gu Rongqing Li |
| author_sort | Qin Zhang |
| collection | DOAJ |
| description | An accelerated corrosion test followed by a monotonic tensile test was conducted on 66 groups of steel bar specimens with varying design parameters and the effects of key factors such as corrosion levels, steel bar diameters and corrosion conditions on the non-uniform corrosion and mechanical properties of the steel bars were analyzed emphatically. Based on the test results and probability theory, the non-uniformity of corrosion for corroded steel bars was statistically analyzed, and a probability model of stress-strain relationship of corroded steel bars considering the influences of non-uniform corrosion was further established. The findings indicated that there is non-uniform corrosion along the length of corroded steel bars, which led to irregular corrosion pits on the surface of steel bars. The non-uniformity of corrosion in small-diameter steel bars varies under different corrosion conditions, whereas large-diameter steel bars show little variation in non-uniformity of corrosion across various conditions. The degradation of mechanical properties of steel bars is most notably influenced by the corrosion levels, while the influences of corrosion conditions and the diameters of steel bars on the degradation of the mechanical properties are relatively insignificant. The proposed probability-based model, including the uncertainty effects triggered by the non-uniformity of corrosion, can effectively predict the stress-strain relationship of corroded steel bars based on specified probability requirements. |
| format | Article |
| id | doaj-art-4701ecf663f24dd7ac62e0ea1fc3ce87 |
| institution | Kabale University |
| issn | 2214-5095 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj-art-4701ecf663f24dd7ac62e0ea1fc3ce872025-01-20T04:17:29ZengElsevierCase Studies in Construction Materials2214-50952025-07-0122e04262A probabilistic stress-strain relationship model for steel bars including the non-uniform corrosion effects in chloride environmentsQin Zhang0Xinguo Guo1Haitao Zhao2Dongkang Hu3Xianglin Gu4Rongqing Li5College of Civil and Transportation Engineering, Hohai University, Nanjing 210024, China; Key Laboratory of Performance Evolution and Control for Engineering Structures of Ministry of Education, Tongji University, Shanghai 200092, China; Corresponding author at: College of Civil and Transportation Engineering, Hohai University, Nanjing 210024, China.College of Civil and Transportation Engineering, Hohai University, Nanjing 210024, ChinaCollege of Civil and Transportation Engineering, Hohai University, Nanjing 210024, China; Corresponding author.State Grid Jiangsu Electric Power Co.,Ltd., Nantong 226000, ChinaKey Laboratory of Performance Evolution and Control for Engineering Structures of Ministry of Education, Tongji University, Shanghai 200092, ChinaCCCC Water Planning and Design Institute Co.,Ltd., Beijing 100007, ChinaAn accelerated corrosion test followed by a monotonic tensile test was conducted on 66 groups of steel bar specimens with varying design parameters and the effects of key factors such as corrosion levels, steel bar diameters and corrosion conditions on the non-uniform corrosion and mechanical properties of the steel bars were analyzed emphatically. Based on the test results and probability theory, the non-uniformity of corrosion for corroded steel bars was statistically analyzed, and a probability model of stress-strain relationship of corroded steel bars considering the influences of non-uniform corrosion was further established. The findings indicated that there is non-uniform corrosion along the length of corroded steel bars, which led to irregular corrosion pits on the surface of steel bars. The non-uniformity of corrosion in small-diameter steel bars varies under different corrosion conditions, whereas large-diameter steel bars show little variation in non-uniformity of corrosion across various conditions. The degradation of mechanical properties of steel bars is most notably influenced by the corrosion levels, while the influences of corrosion conditions and the diameters of steel bars on the degradation of the mechanical properties are relatively insignificant. The proposed probability-based model, including the uncertainty effects triggered by the non-uniformity of corrosion, can effectively predict the stress-strain relationship of corroded steel bars based on specified probability requirements.http://www.sciencedirect.com/science/article/pii/S2214509525000610Non-uniform corrosionSteel barsMechanical propertiesStress-strain relationshipProbability-based model |
| spellingShingle | Qin Zhang Xinguo Guo Haitao Zhao Dongkang Hu Xianglin Gu Rongqing Li A probabilistic stress-strain relationship model for steel bars including the non-uniform corrosion effects in chloride environments Case Studies in Construction Materials Non-uniform corrosion Steel bars Mechanical properties Stress-strain relationship Probability-based model |
| title | A probabilistic stress-strain relationship model for steel bars including the non-uniform corrosion effects in chloride environments |
| title_full | A probabilistic stress-strain relationship model for steel bars including the non-uniform corrosion effects in chloride environments |
| title_fullStr | A probabilistic stress-strain relationship model for steel bars including the non-uniform corrosion effects in chloride environments |
| title_full_unstemmed | A probabilistic stress-strain relationship model for steel bars including the non-uniform corrosion effects in chloride environments |
| title_short | A probabilistic stress-strain relationship model for steel bars including the non-uniform corrosion effects in chloride environments |
| title_sort | probabilistic stress strain relationship model for steel bars including the non uniform corrosion effects in chloride environments |
| topic | Non-uniform corrosion Steel bars Mechanical properties Stress-strain relationship Probability-based model |
| url | http://www.sciencedirect.com/science/article/pii/S2214509525000610 |
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