Effect of chloride binding and sulfate ion attack on the chloride diffusion in calcium sulfoaluminate-based material under seawater environment
文献类型：期刊论文
| 作者 | Qiu, Xin1,2; Yuan, Jingqiang1; Chen, Weizhong1; Tan, Xianjun1; Wu, Guojun1; Tian, Hongming1 |
| 刊名 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| 出版日期 | 2024-05-01 |
| 卷号 | 30页码:4261-4271 |
| 关键词 | Chloride binding Sulfate ion Calcium sulfoaluminate cement Isothermal adsorption models Chloride ion diffusion |
| ISSN号 | 2238-7854 |
| DOI | 10.1016/j.jmrt.2024.04.139 |
| 英文摘要 | The diffusion of chloride ions in reinforced concrete under the seawater environment will affect the physical or mechanical properties and durability. Sulfate ions also influence the diffusion of chloride ions by generating expansion products through physical and chemical reactions. Further research on the effects of chloride binding and sulfate ion attack on chloride ion diffusion will deepen the understanding of concrete failure mechanism. In this paper, a quaternary blend based on calcium sulfoaluminate (CSA) cement was prepared and laboratory immersion tests were conducted in artificial seawater with varying salt concentrations. Initially, chloride ion concentration measurements and XRD tests were conducted at different corrosion ages and salt concentrations. Subsequently, the chloride binding properties of CSA-based materials was quantified through the analysis of chloride ion concentration and the phases of hydration products. Meanwhile, the corrosive effect of sulfate ions on chloride ion diffusion was determined corresponds to the content of expansive hydration products. Furthermore, numerical simulations were employed to evaluate the impact of sulfate ion corrosion, chloride binding, and their combined effects on chloride ion diffusion, and the results were compared with free chloride ion concentration ( C f ). The results indicate that the total chloride ion concentration ( C t ) exhibits a linear relationship with increasing salt concentrations of seawater in CSA-based materials. Meanwhile, the bound chloride ion concentration ( C b ) follows a logarithmic growth pattern. The chloride binding rate experiences a linear decline with the increase of chloride ion concentration in the artificial seawater. Additionally, the relationship between C f and C b or C t can be described using different isothermal adsorption models for the CSA-based materials. Among these models, the Langmuir model is suitable for characterizing the relationship between C f and C b , while the Freundlich model is suitable for describing the relationship between C f and C t . Furthermore, it is noteworthy that sulfate ion attack and chloride binding exert nearly equivalent effects on the diffusion of chloride ions in CSA-based materials at short corrosion age and low chloride ion concentration. However, the corrosive impact of sulfate ions gradually evolves into the dominant factor in the progression of corrosion over time and the increase in seawater salt concentration. |
| 资助项目 | National Key R&D Program of China[2021YFC3100805] ; National Key R&D Program of China[2021YFC3100802] ; National Natural Science Foundation of China[51991392] ; National Natural Science Foundation of China[42293353] ; National Natural Science Foundation of China[42293355] ; National Natural Science Foundation of China[52179116] ; National Natural Science Foundation of China[52179113] ; Key Deployment Project of Chinese Academy of Sciences[ZDRW-ZS-2021-3] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001233825300001 |
| 出版者 | ELSEVIER |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41547]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Yuan, Jingqiang |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiu, Xin,Yuan, Jingqiang,Chen, Weizhong,et al. Effect of chloride binding and sulfate ion attack on the chloride diffusion in calcium sulfoaluminate-based material under seawater environment[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,30:4261-4271. |
| APA | Qiu, Xin,Yuan, Jingqiang,Chen, Weizhong,Tan, Xianjun,Wu, Guojun,&Tian, Hongming.(2024).Effect of chloride binding and sulfate ion attack on the chloride diffusion in calcium sulfoaluminate-based material under seawater environment.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,30,4261-4271. |
| MLA | Qiu, Xin,et al."Effect of chloride binding and sulfate ion attack on the chloride diffusion in calcium sulfoaluminate-based material under seawater environment".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 30(2024):4261-4271. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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