Disagreements about the mechanisms of cement hydration remain despite the fact that portland cement has been studied extensively for over 100 years. One reason for this is that direct observation of the change in microstructure and chemistry are challenging for many experimental techniques. This paper presents results from synchrotron nano X-ray tomography and fluorescence imaging. The data show unprecedented direct observations of small collections of C3S particles before and after different periods of hydration in 15 mmol/L lime solution. X-ray absorption contrast is used to make three dimensional maps of the changes of these materials with time. The chemical compositions of hydration products are then identified with X-ray fluorescence mapping and scanning electron microscopy. These experiments are used to provide insight into the rate and morphology of the microstructure formation.

中文翻译：

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C 3 S水合微观结构和化学性质的直接三维观察

尽管硅酸盐水泥已经被广泛研究了 100 多年，但关于水泥水化机制的分歧仍然存在。其原因之一是，对许多实验技术而言，直接观察微观结构和化学变化是具有挑战性的。本文介绍了同步加速器纳米 X 射线断层扫描和荧光成像的结果。数据显示了在 15 mmol/L 石灰溶液中不同水化时间前后对少量 C3S 颗粒集合的前所未有的直接观察。X 射线吸收对比用于制作这些材料随时间变化的三维图。然后用 X 射线荧光绘图和扫描电子显微镜确定水合产物的化学成分。