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This study examines how additives and supplementary cementitious materials affect the hydration process and microstructure of cement pastes in the first 24 hours.

May 22, 2026Journal of the American Ceramic SocietyOpen Access

Chemical and Microstructural Evolution of Cement Pastes with Additives and SCMs During the First 24 h

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This study examines how additives and supplementary cementitious materials affect the hydration process and microstructure of cement pastes in the first 24 hours.
Investigated early hydration in Portland cement pastes with selected additives and supplementary cementitious materials.
Conducted time-resolved elemental analysis using energy-dispersive spectroscopy mapping, Raman spectroscopy, and scanning electron microscopy.
Maintained a constant water-to-cementitious ratio of 0.5 without curing interruptions.
Synthetic calcium-silicate hydrate and colloidal silica enhanced early Ca-Si balance and promoted denser hydrate morphologies.
Metakaolin resulted in rapid chemical participation and compact hydration products, while slag reacted slower on the surface.
Fly ash was largely inert during the first day, and bone ash caused localized chemical heterogeneity with calcium-phosphate interactions.

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Implication

Randomized trial investigates chemical evolution and microstructural changes in cement pastes with additives, highlighting implications for construction materials.

Cite This Study

Adeyemi Adesina (2026) studied this question.

synapsesocial.com/papers/6a0ff412d674f7c03778d192 https://doi.org/10.1111/jace.70860

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Implication

Randomized trial investigates chemical evolution and microstructural changes in cement pastes with additives, highlighting implications for construction materials.

Chemical and Microstructural Evolution of Cement Pastes with Additives and SCMs During the First 24 h

Key Points

Discussion

Implication

Cite This Study

Chemical and Microstructural Evolution of Cement Pastes with Additives and SCMs During the First 24 h

Key Points

Discussion

Implication

Cite This Study

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