Research Article
Optimal Proportion of Similar Materials and Rockburst Tendency of White Sandstone
Table 7
Analysis of the difference in elastic modulus of each factor covered by the study.
| Factor level | (A) Quartz sand (%) | (B) Iron powder (%) | (C) Plaster : cement | (D) Sand size (mm) |
| I1 | 2.07 | 2.02 | 2.05 | 2.53 | I2 | 1.95 | 1.90 | 1.82 | 2.50 | I3 | 1.82 | 1.74 | 1.81 | 2.45 | I4 | 1.85 | 2.02 | 2.01 | 2.20 | Range | 0.25 | 0.29 | 0.24 | 0.33 |
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