Impact of Metakaolin and Limestone Powder Ratio on the Hydration and Compressive Strength of Limestone-Calcined Clay Cement Using Calcined Clay With High Metakaolin Content

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The research aims to investigate the effects of metakaolin and limestone powder ratios on the hydration and compressive strength of limestone-calcined clay cement.
Utilized high-purity metakaolin (90% kaolinite) in limestone-calcined clay cement (LMC)
Examined varying replacement ratios of limestone powder (LSP)
Compared compressive strength outcomes with prior LMC mix proportions
Increasing the replacement ratio of limestone powder enhances compressive strength
Higher ratios of metakaolin in Supplementary Cementing Materials (SCMs) correlate with increased C-(A)-S-H formation
Smaller pore sizes lead to improved strength characteristics

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Research finds that adjusting metakaolin and limestone powder ratios affects cement strength, indicating optimal mixtures.

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KONO et al. (2026) studied this question.

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