Pozzolanic reactivity of mesoporous amorphous rice husk ash in portlandite solution

•The higher the SSA of RHA, the more the pozzolanic reactivity.•The pozzolanic reactivity of SF is higher than that of RHA.•An appropriate criterion suitable for comparing their pozzolanic reactivity is proposed. Pozzolanic reactivity of rice husk ashes (RHA) and silica fume (SF) was assessed by mea...

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