Study on the Parameter Optimization and Strength Mechanism of Coal Gangue Emulsified Asphalt Mixture

Table 8

Range analysis.

Properties		Parameters
		Parameter A	Parameter B	Parameter C
Stability (kN)	K1	11.12	9.92	8.69
	K2	10.33	10.06	10.81
	K3	9.05	10.62	11.03
	K4	10.63	10.53	10.59
	R	2.07	0.7	2.34
Flow value (0.1 mm)	K1	36.68	37.85	38.03
	K2	37.28	37.35	37.55
	K3	39.40	38.88	38.35
	K4	38.53	37.80	37.95
	R	2.72	1.53	0.80
Void ratio (%)	K1	7.80	7.51	8.23
	K2	7.79	7.74	7.39
	K3	7.39	8.21	7.59
	K4	8.06	7.58	7.84
	R	0.67	0.70	0.84

Note: K_i (i = 1, 2, 3, 4) is the mean value of the corresponding test results at level i of the parameters. R is the range, which is the difference value between the maximum and the minimum of K_i.