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. 2021 Sep 30;11(51):32258–32268. doi: 10.1039/d1ra05433c

Physical and chemical composition of metakaolin.

Oxides SiO2 Al2O3 Fe2O3 CaO MgO Na2O TiO2 K2O MnO P2O5 LOI Total
MK (wt%) 56.99 35.97 1.18 0.40 0.18 0.10 1.27 0.16 0.04 0.03 1.73 98.05
Particles size distribution (μm) D 10 D 50 D 90
3.66 31.80 101.01