A Study on Optimum Mixture Ratio of Reactive Powder Concrete

Table 1

Chemical composition of various SF.

Item	SF85	SF88	SF90	SF93	SF97
SiO2 (%)	86.4	89.02	92.09	94.8	97.77
K2O (%)	1.34	1.32	1.12	0.63	0.26
Na2O (%)	0.52	0.52	0.42	0.35	0.29
Loss on ignition under 750°C (%)	1.87	1.8	1.6	0.9	0.8
Water content (%)	0.41	0.41	0.4	0.43	0.41
Surface area (m^2/g)	18	18	19	19	19
Volume density (kg/m^3)	200∼350 (origin)
	600∼700 (condense)