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The use of ZnO for the stabilisation of C3S polymorphs
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DOI：10.1617/s11527-025-02675-0.png)
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Abstract
En 中文
The doping technique is widely used to stabilise C3S polymorphs, combined with synthesis temperature and cooling techniques. This work studied the doping technique using ZnO as a dopant at contents of 1.5, 2.0, 4.0, 8.0, and 10.0wt% and evaluated its effect on the polymorphism and reactivity of C3S. The characterisation of the phases in the anhydrous state was carried out by X-ray diffraction (XRD), and the effect of doping on chemical bonds and displacements in the crystalline structure was identified by Fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy (RAMAN). Hydration was assessed using isothermal calorimetry and X-ray diffraction (XRD) techniques. The results show a delay in the hydration process in all the doped pastes, a reduction in the average crystallite size with increasing dopant content, and changes in the displacements and symmetry of the polymorphs.
Keywords:
C3S
Polymorphism
Dopant
Reactivity
Journal
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3.9
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