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本文着重讨论了X射线小角度散射(SAXS)用于水泥石孔结构研究的方法以及相关的理论与实验问题。在大量实验的基础上,对国外同类工作中的某些有影响的结论提出了质疑。根据所得到的实验数据从一个侧面揭示了水泥石内比表面积与水灰比、相对湿度及干燥条件之间的关系。讨论了引起基件电子密度起伏不均的可能原因。实验结果对目前流行的孔结构模型中的某些观点提出了重新认识。本工作与其它实验研究手段相互补充有助于较全面和深入地了解水泥石的孔结构。
This article focuses on the method of X-ray small-angle scattering (SAXS) for the study of cement stone pore structure and related theoretical and experimental issues. On the basis of a large number of experiments, some influential conclusions in similar foreign work were questioned. Based on the experimental data obtained, the relationship between specific surface area of cement stone and water-cement ratio, relative humidity and drying conditions was revealed from one side. The possible causes of uneven fluctuations in the electron density of the substrate were discussed. The experimental results raise a new understanding of some of the current popular pore structure models. This work and other experimental research methods complement each other to help a more comprehensive and in-depth understanding of the pore structure of cement stone.