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Figure 1
Schematic of the synchrotron in situ high-energy X-ray total scattering and pair distribution function (PDF) workflow used to track reaction kinetics in alkali-activated binders with contrasting calcium contents. The total scattering data are Fourier transformed to obtain the PDF from which the time-dependent evolution of selected PDF peaks (associated with the formation of the primary binder gels) is quantified. PDF-derived peak intensity evolution is compared with isothermal calorimetry cumulative heat release, enabling a direct correlation between structural development measured by PDF and macroscopic reaction progress.

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 33| Part 5| September 2026|
https://doi.org/10.1107/S1600577526006776
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