Study on the Relationship between Pore Structure and Uniaxial Compressive Strength of Cemented Paste Backfill by Using Air-Entraining Agent

Table 1

Physical properties of the materials.

Class	Tailings	Tailing sludge	Fly ash
Apparent density (kg/m^3)	2626	2653	1990
Packing density (kg/m^3)	1464	923	650
Surface moisture content (%)	0.120	0.974	0.049
Hydroxyllapatite (%)	10.15	60.94	—
Quartz (%)	6.91	2.24	61.55
Hematite (%)	12.75	—	1.46
Albite (%)	—	8.38	15.99
Plagioclase (%)	—	11.42	—
Muscovite (%)	—	—	20.99
Illite (%)	—	9.76	—
Dolomite (%)	69.65	6.30	—