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水泥基材料离子迁移过程的可视化与定量分析

Biqin DONG,Zhong KONG,Yusheng WU, Shuxian HONG

Journal of Shenzhen University(Science & Engineering)（2021）

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Abstract
氯离子的侵蚀是引起滨海混凝土钢筋锈蚀的关键因素之一.为探索离子在水泥基材料中的原位迁移过程,利用X射线计算机断层扫描(X-ray computed tomography,XCT)技术,以碘化物为示踪剂,对掺有粉煤灰的水泥基材料的离子迁移过程进行无损分析.结果表明,XCT技术可以对离子在水泥基材料中的迁移过程进行无损、可视化跟踪,并能精确定量离子在样品内的浓度分布.将XCT与滴定法分别测得的离子浓度进行对比,证明了 XCT测试结果的准确性.
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Key words
visualization migration process,cement-based
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