Evaluation of hydration mechanisms of Portland cement using calorimetry and X-ray diffraction analysis shows early strength improvements.
Purpose : Evaluation of hydration mechanisms of mechanically activated Portland cement at early curing stages. Methodology : Calorimetry of thermal effects during cement curing, X-ray diffraction analysis, XRD patterns are analyzed in Difrac.EVA software program, including the ICDD PDF2 database for the analysis of the phase composition, coherent scattering regions, internal elastic stresses. Research findings : It is shown that mechanically activated cement binder together with sand of quarry moisture content in the activator provide an increase in strength properties of hydrated cement during its early curing. The activator design allows control for the power and time of grinding. The greatest effect is provided at the engine power of 3000 W and the mixture processing for 5 min. The results of physical and chemical analyses of the binder hydration process are presented using X-ray phase and colorimetric analysis.
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Kopanitsa et al. (2025) studied this question.
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