grade86

Chemical & Physical Analysis	ASTM C1240-03	GB/T 21236-2007
SiO2 (%)	ï¼Âž88	≥88
C(%)		≤2.5
CI(%)		≤0.2
PH value		4.0-8.5
Moisture(%)	ï¼Âœ3.0	≤3.0
L.O.I(%)	ï¼Âœ6.0	≤4.0
Specific Surface (BET-m2/gram)	ï¼Âž15	≥15
Pozz. Activity Index (%) - 7 days accelerated curing	ï¼Âž105
Pozz. Activity Index (%) -  28 days normal curing		≥85
Retained on 45 micron sieve (%)	ï¼Âœ10	≤5.0
Variation from avg. retained on 45 micron (%-points)	ï¼Âœ5
Water requirement ratio (%)		≤125

grade 95

Chemical and physical requirements		GB/T 21236-2007
Item	Spec.
SiO2(%)	≥95%	≥95%
Al2O3(%)	0.21	≤1.0
Fe2O3(%)	0.08	≤1.0
C(%)		≤1.0
CI(%)		≤0.1
CaO(%)	0.11	≤1.0
MgO(%)	0.21
K2O(%)	0.32	≤1.0
Na2O(%)	0.24
P2O5(%)	0.09
MnO(%)	0.035
TiO2(%)	0.012
PH value		4.5-7.5
L.O.I (%)	2.63	≤1.0
Coarse Particles >45µm (325mesh) (%)	≤1.2	≤2.0
Specific Surface(m2/g)		≥15
Pozz. Activity Index (%) -  28 days normal curing		≥85
Water requirement ratio (%)		≤125
Bulk Density(as packed)	200-350kg/m3 U 500-700 kg/m3 D