Table 1 Orthogonal experimental scheme L16(44).

From: Development and application of new composite grouting material for sealing groundwater inflow and reinforcing wall rock in deep mine

Group

A. bentonite-cement ratio

B. water-solid ratio

C. accelerator content (%)

D. retarder content (%)

1

1.0

3.5

2.0

1.0

2

1.0

4.0

2.3

1.3

3

1.0

4.5

2.6

1.6

4

1.0

5.0

2.9

1.9

5

1.2

3.5

2.3

1.6

6

1.2

4.0

2.0

1.9

7

1.2

4.5

2.9

1.0

8

1.2

5.0

2.6

1.3

9

1.4

3.5

2.6

1.9

10

1.4

4.0

2.9

1.6

11

1.4

4.5

2.0

1.3

12

1.4

5.0

2.3

1.0

13

1.6

3.5

2.9

1.3

14

1.6

4.0

2.6

1.0

15

1.6

4.5

2.3

1.9

16

1.6

5.0

2.0

1.6

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