通过离子传导机制提高水泥基材料的电阻率,从而增强基础设施的韧性

IF 10.8 1区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Yingjie Li , Xiaohui Zeng , Binbin Yin , Jilin Wang , K.M. Liew
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引用次数: 0

摘要

潮湿环境中的水泥基材料(CBM)受其固有缺陷和孔隙溶液的影响,电气绝缘性能较差。水泥基材料的低电阻率对弹性基础设施的安全构成威胁,缩短了材料的使用寿命,增加了维护和维修成本。在这项工作中,我们首先阐明了提高电阻率的两个主要机制:(1)抑制离子电迁移和(2)破坏传导路径。然后,我们根据这些机制系统地总结和讨论了 16 种提高电阻率的潜在方法。结果表明,在这 16 种方法中,早期碳化固化、添加高活性矿物掺合料和表面疏水改性是特别有效的方法。两种或两种以上方法的组合可同时发挥其功能,从而最大限度地提高整体效果。本文概述了未来的工作,目的是满足在建设弹性基础设施时对具有高电阻率的水泥基材料日益增长的需求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electrical resistivity of cement-based materials through ion conduction mechanisms for enhancing resilient infrastructures
Cement-based materials (CBM) in humid environments, influenced by their inherent defects and the presence of pore solution, exhibit poor electrical insulation performance. Low electrical resistivity of cement-based materials poses a threat to the safety of resilient infrastructures, shortens the lifespan of materials, and increases the costs of maintenance and repair. In this work, we first elucidate two primary mechanisms for enhancing electrical resistivity: (1) inhibition of ion electromigration and (2) disruption of conduction paths. We then systematically summarize and discuss 16 potential methods for improving their electrical resistivity based on these mechanisms. It is indicated that among these 16 methods, early carbonation curing, the addition of high-activity mineral admixtures, and surface hydrophobic modification are particularly effective approaches. The combination of two or more methods can simultaneously exert their functions, thus maximizing the overall effectiveness. Future work is outlined with the aim of meeting the growing demand for cement-based materials with high electrical resistivity in the construction of resilient infrastructures.
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来源期刊
Cement & concrete composites
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.
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