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

Table 6

The results of ANOVA.

Source	Sum of squares		Mean square	value	value Prob >
Slump flow
Model	4.848E + 005	4	1.212E + 005	1606.88	<0.0001	Significant
	4.393E + 005	1	4.393E + 005	5824.86	<0.0001
	73673.23	1	73673.23	976.81	<0.0001
	13427.18	1	13427.18	178.03	<0.0001
	2023.20	1	2023.20	26.82	0.0003
Residual	829.65	11	75.42
Lack of fit	473.15	6	78.86	1.11	0.4658	Not significant
Pure error	356.50	5	71.30
Cor total	4.856E + 005	15
Fit statistics	R-squared		0.9983	Std. Dev.		8.68
	Adj R-squared		0.9977	C.V. %		1.57
	Pred R-squared		0.9965	Adeq precision		105.340
Segregation rate
Model	1302.94	6	217.16	148.47	<0.0001	Significant
	14.91	1	14.91	10.19	0.0110
	156.53	1	156.53	107.02	<0.0001
	40.07	1	40.07	27.40	0.0005
	98.74	1	98.74	67.51	<0.0001
	17.11	1	17.11	11.70	0.0076
	9.31	1	9.31	6.36	0.0326
Residual	13.16	9	1.46
Lack of fit	8.95	4	2.24	2.65	0.1569	Not significant
Pure error	4.22	5	0.84
Cor total	1316.10	15
Fit statistics	R-squared		0.9900	Std. Dev.		1.21
	Adj. R-squared		0.9833	C.V. %		12.68
	Pred. R-squared		0.9631	Adeq precision		31.765
Bleeding rate
Model	51.92	4	12.98	404.37	<0.0001	Significant
X1	13.19	1	13.19	410.82	<0.0001
X2	41.18	1	41.18	1283.00	<0.0001
X1x2	8.39	1	8.39	261.36	<0.0001
X22	1.34	1	1.34	41.79	<0.0001
Residual	0.35	11	0.032
Lack of fit	0.29	6	0.048	3.62	0.0897	Not significant
Pure error	0.066	5	0.013
Cor total	52.27	15
Fit statistics	R-squared		0.9932	Std. Dev.		0.18
	Adj. R-squared		0.9908	C.V. %		10.30
	Pred. R-squared		0.9883	Adeq precision		51.719