Research on electrochemical chloride extraction mechanisms, efficiency prediction, and enhancement of reinforced concrete considering load-induced damage
文献类型：期刊论文
| 作者 | Qu, Feng1; He, Yuhao1; Sun, Congtao2,3; Peng, Gang1; Wang, Gongxun1; Chen, Feng1; Zhu, Mingqiao1 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2025-11-28 |
| 卷号 | 501页码:17 |
| 关键词 | Durability Reinforced concrete Chloride salt erosion Electrochemical chloride extraction Load-induced damage |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2025.144356 |
| 通讯作者 | Qu, Feng(fqu@hnust.edu.cn) |
| 英文摘要 | Currently, bridge structures in marine environments may experience accelerated chloride ion ingress due to sustained loading, thereby compromises structural safety. Electrochemical chloride extraction (ECE) is an effective technique for enhancing the durability of reinforced concrete (RC) structures while avoiding additional carbon emissions from reconstructing damaged structures. However, load also influences the ECE process of RC. This study conducted ECE experiments on loaded RC and analyzed the mechanisms by which multiple factors influence the ECE effectiveness of RC under loading conditions. The results indicate that ECE effectively enhances the durability of RC under load. At the same load grade, the dechlorination efficiency increases with w/c ratio. RC with a w/c ratio of 0.55 achieved an 18.47 % higher dechlorination efficiency than RC with 0.41. Higher load grades increase the damage factor of RC, but the dechlorination efficiency after ECE also improves. Compared with unloaded RC, the chloride peak content in RC subjected to a load grade of 0.7 decreased by 49.99 % and the dechlorination efficiency after 12d of sustained loading increased by 17.35 %. Load grades exceeding 0.3 severely damage the RC microstructure and exacerbate the effects of electrolysis hydration products during ECE. Optimizing electrochemical parameters can improve the ECE of effectiveness. An empirical model was proposed for estimating dechlorination efficiency and validated with experimental results (R2=0.965). It is recommended that ECE be applied when the damage factor is below 0.095. This study provides a theoretical basis for extending the service life and the low-carbon application of RC structures in marine environment. |
| WOS关键词 | CORROSION ; CEMENT ; PENETRATION ; PROTECTION ; ANODE ; FIBER |
| 资助项目 | Hunan Provincial Natural Science Foundation of China[2024JJ5159] ; Scientific research project of Hunan Provincial Education Department[18C0324] ; Scientific research project of Hunan Provincial Education Department[24A0350] ; Natural Science Foundation of Hunan University of Science and Technology[E54009] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001614784200001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/204301]  |
| 专题 | 海洋研究所_海洋腐蚀与防护研究发展中心 |
| 通讯作者 | Qu, Feng |
| 作者单位 | 1.Hunan Univ Sci & Technol, Sch Civil Engn, Xiangtan 411201, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Adv Marine Mat, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qu, Feng,He, Yuhao,Sun, Congtao,et al. Research on electrochemical chloride extraction mechanisms, efficiency prediction, and enhancement of reinforced concrete considering load-induced damage[J]. CONSTRUCTION AND BUILDING MATERIALS,2025,501:17. |
| APA | Qu, Feng.,He, Yuhao.,Sun, Congtao.,Peng, Gang.,Wang, Gongxun.,...&Zhu, Mingqiao.(2025).Research on electrochemical chloride extraction mechanisms, efficiency prediction, and enhancement of reinforced concrete considering load-induced damage.CONSTRUCTION AND BUILDING MATERIALS,501,17. |
| MLA | Qu, Feng,et al."Research on electrochemical chloride extraction mechanisms, efficiency prediction, and enhancement of reinforced concrete considering load-induced damage".CONSTRUCTION AND BUILDING MATERIALS 501(2025):17. |
入库方式： OAI收割
来源：海洋研究所
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