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首页> 外文会议>Workshop on Cement and Concrete - Trends and Challenges; 20011107-20011109; Anna Maria Island,FL; US >THE IMPORTANCE AND POTENTIAL OF QUANTITATIVE MICROSTRUCTURAL CHARACTERIZATION IN RESEARCH ON CEMENTITIOUS MATERIALS
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THE IMPORTANCE AND POTENTIAL OF QUANTITATIVE MICROSTRUCTURAL CHARACTERIZATION IN RESEARCH ON CEMENTITIOUS MATERIALS

机译：胶结材料研究中微观结构表征的重要性和潜力

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摘要

For many materials the study of microstructure has played an essential role in research aimed at their understanding and improvement. For cementitious materials the great heterogeneity of the microstructure makes the extraction of comparative information difficult. However, because of this, it is important that such characterization should be quantitative rather than qualitative. Backscattered electron images of polished sections studied in the scanning electron microscope, coupled with local microanalysis, are fruitful techniques for quantitative characterization as illustrated by the example of the study of delayed ettringite formation in mortars cured at elevated temperatures. However, many images must be analyzed, or points analyzed to obtain a statistically valid description of the average microstructure. Further development of such techniques is possible and it is believed that particularly promising approaches are integration with other techniques, such as quantitative X-ray diffraction (XRD) using Rietveld analysis.
机译：对于许多材料而言，微观结构的研究在旨在理解和改进它们的研究中起着至关重要的作用。对于胶结材料，微观结构的巨大异质性使得比较信息的提取变得困难。但是，由于这个原因，重要的是这种表征应该是定量的而不是定性的。在扫描电子显微镜中研究的抛光部分的反向散射电子图像以及局部微分析是定量表征的卓有成效的技术，如在高温固化的砂浆中延迟钙矾石形成的研究实例所说明的那样。但是，必须分析许多图像或分析点才能获得平均微观结构的统计有效描述。这种技术的进一步发展是可能的，并且相信特别有前途的方法是与其他技术的整合，例如使用Rietveld分析的定量X射线衍射（XRD）。

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