Table 11 Response surface analysis design scheme and experimental results.

From: Research on strength characteristics and mechanism of cement stabilized phosphogypsum materials under dry and wet cycles

Test number

Cement admixture/%

Compaction/%

Number of dry and wet cycles/%

Unconfined compressive strength/MPa

1

1

1

1

1.52

2

1

2

2

1.27

3

1

3

3

1.16

4

2

1

2

1.83

5

2

2

3

1.81

6

2

3

1

2.63

7

3

1

3

1.85

8

3

2

2

2.24

9

3

3

1

2.9

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