Quantitative analysis of crystal and amorphous phases in clinker by QXRD/rietveld method

被引:0
作者
Yao, Wu [1 ]
Wei, Yong-Qi [1 ]
Wang, Wei [1 ]
机构
[1] Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education, Tongji University
来源
Jianzhu Cailiao Xuebao/Journal of Building Materials | 2012年 / 15卷 / 05期
关键词
Clinker; Internal standard; Quantitative phase analysis; Rietveld method;
D O I
10.3969/j.issn.1007-9629.2012.05.001
中图分类号
学科分类号
摘要
Combination of quantitative X-ray diffraction (QXRD) and the Rietveld method possesses more unexampled advantages over other methods in quantitative crystal phase analysis of clinker. However, there exist amorphous phases containing poorly crystallized and non-crystal ones in clinker, resulting in the overestimated phase contents that must be corrected to obtain the real contents. Therefore, two internal standards, Al2O3 and ZnO, frequently used but obviously distinct in the linear absorption coefficient, were added into clinkers to calibrate the crystal phase contents under the same experimental conditions; and the comparison of their ability to calibrate was done. Results indicate that the fraction of amorphous phases in clinker is 32.3% (by mass) that is surprisingly high and thus ignorable, whereas other corrected crystal phase contents are 38.8% for C3S, 15.3% for C2S, 4.9% for C3A and 8.7% for C4AF, and Al2O3 shows the better ability to calibrate than ZnO does as an internal standard in quantitative phase analysis (QPA) of clinkers.
引用
收藏
页码:581 / 587
页数:6
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