Mixing Ratios and Cementing Mechanism of Similar Silty Mudstone Materials for Model Tests

Table 4

Experimental scheme.

Scheme	Factor
	A (water content, %)	B (barite powder ratio, %)	C (gypsum mass, g)	D (clay mineral ratio, %)
1	23 (level 1)	44 (level 1)	225 (level 1)	0 (level 1)
2	23	38 (level 2)	250 (level 2)	6 (level 2)
3	23	32 (level 3)	275 (level 3)	12 (level 3)
4	23	26 (level 4)	300 (level 4)	18 (level 4)
5	21 (level 2)	44	250	12
6	21	38	225	18
7	21	32	300	0
8	21	26	275	6
9	19 (level 3)	44	275	18
10	19	38	300	12
11	19	32	225	6
12	19	26	250	0
13	17 (level 4)	44	300	6
14	17	38	275	0
15	17	32	250	18
16	17	26	225	12