Cement hydration is driven by a complex system of chemical reactions of several hydraulic binders and water that influence each other. Here we establish a method to measure the hydration kinetics of an individual clinker phase by electron spin resonance spectroscopy. The hydration of a Mn(II) doped crystalline phase can be analyzed from the decay of signals coming from the starting material and the formed product. Transformation times can be determined by modeling the time series of the signal intensities. The host of the dopant could be identified by combining evidence from different analytical techniques including diffraction and electron microscopy. The results about the reaction kinetics are compared to those obtained from caloric measurements. The method opens a way to study the hydration of different hydraulic binders in complex systems selectively, which includes the determination of induction periods and transformation times from in-situ measurements.

中文翻译：

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电子自旋共振后的水泥水化动力学


水泥水化是由多种水硬性粘合剂和水相互影响的复杂化学反应系统驱动的。在这里，我们建立了一种通过电子自旋共振光谱测量单个熟料相的水合动力学的方法。 Mn(II) 掺杂晶相的水合可以通过来自起始材料和形成产物的信号的衰减来分析。可以通过对信号强度的时间序列进行建模来确定转换时间。掺杂剂的主体可以通过结合来自不同分析技术（包括衍射和电子显微镜）的证据来识别。将反应动力学的结果与热量测量获得的结果进行比较。该方法开辟了选择性研究复杂系统中不同水硬性粘合剂水化的方法，其中包括通过现场测量确定诱导期和转变时间。