Research Article
Experimental Study on Stiffness Softening of Soil-Rock Mixture Backfill under Metro Train Cyclic Load
Table 1
Summary of physical and mechanical properties of soil-rock mixture backfill.
| | Silty clay | Sandstone | | Rock block content (%) | Natural water content (%) | Dry density (kg/m3) | Specific gravity of soil | Plastic limit (%) | Liquid limit (%) | Plasticity index | Dry density (kg/m3) | Saturation density (kg/m3) |
| | 43.79 | 9.22 | 1700 | 2.54 | 17.09 | 30.16 | 13.07 | 2280 | 2400 |
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