Research Article
Experimental Study on Main Physical Parameters Controlling Shear Strength of Unsaturated Loess
Table 5
Quartz sand and quartz flour direct shear test results.
| Water content (%) | Internal friction angle (°) | Dry density (g/cm3) | Internal friction angle (°) |
| 40–70 mesh quartz sand | 0 | 37.45 | 1.4 | 35.87 | 5 | 34.98 | 1.5 | 37.45 | 10 | 33.38 | 1.6 | 40.58 | 15 | 31.2 | — | — | 20 | 30.1 | — | — |
| 400 mesh quartz flour | 0 | 39.83 | 1.4 | 38.11 | 5 | 38.73 | 1.5 | 39.83 | 10 | 37.56 | 1.6 | 42.09 | 15 | 36.72 | — | — | 20 | 35.98 | — | — |
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