International Journal of Concrete Structures and Materials

Table 3 Composition of RHA.

From: Strength and Some Durability Properties of Concrete Containing Rice Husk Ash Produced in a Charcoal Incinerator at Low Specific Surface

SiO₂	Al₂O₃	Fe₂O₃	CaO	MgO	SO₃	K₂O
95.41 %	0.00 %	0.82 %	0.00 %	1.24 %	0.07 %	1.65 %

Na₂O	Mn₂O₃	P₂O₅	Specific surface	LOI	Amorphous silica
0.22 %	0.19 %	3.97 %	235 m²/kg	0.77 %	90 %

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