Effect of Concentration and Suspension Agent (HPMC) on Properties of Coal Gangue and Fly Ash Cemented Filling Material

Table 3

Experimental design scheme.

Samples	Solids content (wt. %)	Cement content (wt. %)	Fly ash content (wt. %)	Coal gangue content (wt. %)	HPMC content/powder (wt. %)	Water content (wt. %)
1#	77.00	12.00	18.57	46.43	0.49	23.00
2#	77.00	12.00	18.57	46.43	0.49	23.00
3#	77.00	12.00	18.57	46.43	1.50	23.00
4#	77.00	12.00	18.57	46.43	1.50	23.00
5#	77.57	12.00	18.73	46.84	1.00	22.43
6#	77.84	12.00	18.81	47.03	0.00	22.16
7#	77.84	12.00	18.81	47.03	0.00	22.16
8#	78.43	12.00	18.98	47.45	1.50	21.57
9#	78.68	12.00	19.05	47.63	0.86	21.32
10#	78.88	12.00	19.11	47.77	0.28	21.12
11#	79.69	12.00	19.34	48.35	1.01	20.31
12#	79.97	12.00	19.42	48.55	0.51	20.03
13#	80.00	12.00	19.43	48.57	0.00	20.00
14#	80.00	12.00	19.43	48.57	0.00	20.00
15#	80.00	12.00	19.43	48.57	1.50	20.00
16#	80.00	12.00	19.43	48.57	1.50	20.00