摘要
本文归纳了X射线计算机断层扫描技术扫描及重构的工作原理,总结并讨论了该技术在划分材料内部组分、水泥水化过程跟踪、孔结构及细观裂缝判定、外界侵蚀物质迁移造成的微观结构变化和钢筋锈蚀开裂等领域的最新研究进展,介绍了世界上最新XCT仪器研究水泥基材料孔结构实时变化的实例。最后,对今后XCT技术在定量研究水泥基材料微观结构变化的研究方向提出了建议。
In this review,scanning and reconstruction principles of XCT are introduced. The latest progress of XCT application on determination of ce-ment components,tracking of cement hydration process,identification of pore structure and micro-crack,change in microstructure due to ingress of external substances and formation of cracks caused by corrosion of reinforcement are presented. Subsequently,an example of using the most advanced XCT on testing development of pore structure is raised. Finally,existing problems on the application of XCT in testing microstructure development of cementitious materials that need to be solved are recommended.
引文
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