[papercreters] Rice Husk Ash

 Dear Wayne,
Rice Husk Ash is special because it almost entirely consists of silica and is a water repellent, in addition to being pozollonic.
Must other orgainc ash come no where close to rice husk ash in terms of silical content.
The closet approximation ( hich is also far way) is Sugar cane Ash ( also called baggase Ash)

Ashok

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