Shear Behaviour of Aeolian Sand with Different Density and Confining Pressure
Abstract
:1. Introduction
2. Materials and Methods
2.1. Basic Parameters of Aeolian Sand
2.2. Testing Program
2.3. Test Method
- In the test, the sample mass of the dry sand was divided into five parts and the relative density of the lower layer is 1% lower than that of the upper layer. For example, to prepare a specimen with a relative density of 50%, the relative density of the five layers from bottom to top is 48%, 49%, 50%, 51% and 52%, respectively, as shown in Figure 2a;
- It needs to bind the latex membrane on the base of the triaxial cell, put the porous stone and filter paper into the latex membrane in turn, and then fix the mould on the base. Then, a vacuum pump was used to draw the mould so that the latex membrane was tightly attached to the inner wall of the mould;
- Next, sprinkle the divided specimen into the latex membrane, and to use a tool (as shown in Figure 3) to accurately control the height of each layer. Then, the filter paper, porous stone, and loading cap were installed in turn;
- After the specimen preparation, a small vacuum was applied to stabilize the specimen and the mould was carefully removed. As shown in Figure 2b.
3. Results and Discussion
3.1. Stress-Strain Behaviour
3.2. Critical State
3.3. Strength Characteristic
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Coefficient of Uniformity | Coefficient of Curvature | Specific Gravity | Void Ratio | |
---|---|---|---|---|
Cu | Cc | Gs | Max | Min |
2.1 | 1.0 | 2.67 | 0.907 | 0.589 |
CD/CU | Relative Density Dr (%) | Void Ratio e | Sand Mass (g) | Effective Confining Pressure σ3′ (kPa) |
---|---|---|---|---|
CD/CU | 10 | 0.875 | 533.8 | 100/300/600 |
30 | 0.812 | 552.5 | ||
50 | 0.748 | 572.7 | ||
70 | 0.684 | 594.5 | ||
90 | 0.621 | 617.6 | ||
CU | 50 | 0.748 | 572.7 | 50 |
50 | 0.748 | 572.7 | 800 | |
50 | 0.748 | 572.7 | 1200 |
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Li, X.; Xu, W.; Chang, L.; Yang, W. Shear Behaviour of Aeolian Sand with Different Density and Confining Pressure. Appl. Sci. 2022, 12, 3020. https://doi.org/10.3390/app12063020
Li X, Xu W, Chang L, Yang W. Shear Behaviour of Aeolian Sand with Different Density and Confining Pressure. Applied Sciences. 2022; 12(6):3020. https://doi.org/10.3390/app12063020
Chicago/Turabian StyleLi, Xuefeng, Wendong Xu, Lei Chang, and Wenwei Yang. 2022. "Shear Behaviour of Aeolian Sand with Different Density and Confining Pressure" Applied Sciences 12, no. 6: 3020. https://doi.org/10.3390/app12063020
APA StyleLi, X., Xu, W., Chang, L., & Yang, W. (2022). Shear Behaviour of Aeolian Sand with Different Density and Confining Pressure. Applied Sciences, 12(6), 3020. https://doi.org/10.3390/app12063020