红泥和柠檬酸盐掺入硫铝酸钙水泥中提高316不锈钢的耐腐蚀性

IF 10.8 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Cement & concrete composites Pub Date : 2025-01-16 DOI:10.1016/j.cemconcomp.2025.105940

Xiaocheng Zhou , Jinjie Shi

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引用次数: 0

摘要

将赤泥（RM）掺入硫铝酸钙（CSA）水泥中，为修复工程提供了一种既经济又环保的解决方案，从而减少了碳排放。但可能会进一步缩短CSA水泥的凝结时间，给施工带来不便。此外，钢在与RM混合的CSA水泥中的耐蚀性尚不清楚。因此，本研究专门为康复工程设计了RM与柠檬酸盐混合的CSA水泥，其中柠檬酸盐兼具缓凝外加剂和缓蚀剂的功能。RM虽然对316不锈钢（316ss）的钝化性能有负面影响，但在掺入RM的CSA水泥中，它提高了316ss的抗点蚀性能。此外，在掺入RM和柠檬酸盐的CSA水泥中，形成与柠檬酸盐相关的保护层有助于提高316ss的钝化能力和抗点蚀能力。

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Improved corrosion resistance of 316 stainless steel in calcium sulfoaluminate cement incorporated with red mud and citrate

The incorporation of red mud (RM) in calcium sulfoaluminate (CSA) cement offers a cost-effective and environmentally friendly solution for rehabilitation engineering, resulting in reduced carbon emissions. However, it may further reduce the setting time of CSA cement, thus causing inconvenience during construction. Moreover, the corrosion resistance of steel in CSA cement blended with RM is unclear. Therefore, in this study, CSA cement blended with RM and citrate has been specifically designed for rehabilitation engineering where citrate functions as both retarding admixture and corrosion inhibitor. Although RM negatively affects the passivity of 316 stainless steel (316ss), it enhances the pitting corrosion resistance of 316ss in CSA cement blended with RM. Furthermore, the formation of a citrate-related protective layer contributes to the improved passivation ability and pitting corrosion resistance of 316ss in CSA cement incorporated with RM and citrate.

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来源期刊

Cement & concrete composites 工程技术-材料科学：复合

CiteScore

18.70

自引率

11.40%

发文量

459

审稿时长

65 days

期刊介绍： Cement & concrete composites focuses on advancements in cement-concrete composite technology and the production, use, and performance of cement-based construction materials. It covers a wide range of materials, including fiber-reinforced composites, polymer composites, ferrocement, and those incorporating special aggregates or waste materials. Major themes include microstructure, material properties, testing, durability, mechanics, modeling, design, fabrication, and practical applications. The journal welcomes papers on structural behavior, field studies, repair and maintenance, serviceability, and sustainability. It aims to enhance understanding, provide a platform for unconventional materials, promote low-cost energy-saving materials, and bridge the gap between materials science, engineering, and construction. Special issues on emerging topics are also published to encourage collaboration between materials scientists, engineers, designers, and fabricators.