A Characterization of Cement Paste Degradation Exposed to Elevated Temperatures Conditions Using Tg-DTG/Dsc, Xrd, Sem, and Ftir Analyses

October 10, 2025

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The study aims to assess the structural and chemical changes in cement paste under elevated temperatures ranging from 25 to 1000°C.
Utilized TG-DTG/DSC, BET, XRD, SEM, and FTIR analyses to evaluate degradation profiles.
Examined the effects of different heating rates (2.5, 10, and 20°C·min-1) on thermal behavior.
Calculated kinetic parameters using the Ortega method for each degradation step.
Identified three distinct degradation regions: dehydration of C-S-H gel and pore water, dehydroxylation of portlandite, and decarbonation of calcite.
Demonstrated significant cracking in the microporous structure through BET analysis.
Provided insights into phase transformations and microstructural evolution at high temperatures using XRD, SEM, and FTIR.

Evaluates thermal stability of cement paste exposed to high temperatures, suggesting insights into degradation mechanisms.

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Naktiyok et al. (2025) studied this question.

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