X-Ray Diffraction Comparison Study of Binders Derived from Pure C₃S and Portland Cement Paste

Abstract:

The purpose of this study is to compare binders of two different origins. The powders obtained from crushing pure C₃S and hydrated cement for 28 days with w/b=0.6 and 0.5, respectively, will be subjected to heat treatment at 800°C. This work used X-ray diffraction (XRD) as a technique to characterize. According to X-ray diffraction, heat treatment resulted in the synthesis of β-C₂S belite in the pure phase and two polymorphs α'-C₂S and β-C₂S in the cement phase. The binder regenerated from cement pastes generates C-S-H at an early stage, which can be attributed to the high reactivity of the α'-C₂S polymorph.

• Periodical: Key Engineering Materials (Volume 970)
• Pages: 11-16
• DOI: https://doi.org/10.4028/p-Ch6dZN
• Online since: December 2023
• Authors: Abdellatif Abidar*, Othmane Bouchenafa, Rabah Hamzaoui, Céline Florence, Sandrine Mansoutre, Laury Barnes Davin, Claire Capra, Bruno Classen
• Keywords: Heat Treatment, Hydraulic Regeneration, Recycling, Structure, XRD

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