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This research aims to explore how calcined corn cob ash affects hydration kinetics in Portland cement blends.

March 30, 2026Discover Civil EngineeringOpen Access

Properties of corn cob ash and effect on hydration kinetics in PC-blended cementitious systems

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Investigations reveal corn cob ash impacts hydration kinetics in cement, suggesting limited pozzolanicity.

This research aims to explore how calcined corn cob ash affects hydration kinetics in Portland cement blends.
Characterized corn cob ash for oxide composition using XRF and for amorphous content with XRD.
Assessed reactivity using the R3 Test and strength activity index (SAI).
Measured hydration kinetics using isothermal calorimetry at 20 °C over 48 hours.
Corn cob ashes displayed limited pozzolanicity despite SAI results suggesting otherwise.
Partial replacement of Portland cement with corn cob ash prolonged the induction phase and delayed heat peak.

Fadele et al. (2026) studied this question.

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