Shear Deformation Characteristics of Aeolian Sand in Gurbantunggut Desert
- https://doi.org/10.2991/ic3me-15.2015.113How to use a DOI?
- Road Engineering; Shear Deformation; Aeolian Sand; Desert; Gurbantunggut Desert
Through various types of quick shear test, completely grasp the shear deformation characteristic of aeolian sand in Gurbantunggut Desert. The test result shows that the shear deformation curve of aeolian sand is influenced obviously by relative compactness. When the latter one is lower than 95%, the peak doesn’t appear; when being greater than 95%, the peak value may appear frequently. With increase of compactness and vertical pressure, the differential value between peak shear strength and residual shear strength also increase; the influence on residual shear strength by compactness, vertical pressure and water content rate is less, the greater influence mostly appears when the peak shear strength is over 90%, showing that the aeolian sand is provided with obvious shear dilatancy and shear contraction. Under unsaturated water while testing, the shear strain is between 0.64% 1.12% when the peak value appears; Under unsaturated water while testing, the shear strain may increase obviously so as to cause that the peak value for shear deformation curve uneasily appears. The mechanism lies in the complicated change and comprehensive influence of connection between capillary force and film water caused by change of compactness and water content ratio.
- © 2015, the Authors. Published by Atlantis Press.
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- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Chang-Ning Jin AU - Yu-Hong Zhang PY - 2015/08 DA - 2015/08 TI - Shear Deformation Characteristics of Aeolian Sand in Gurbantunggut Desert BT - Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering PB - Atlantis Press SP - 572 EP - 578 SN - 2352-5401 UR - https://doi.org/10.2991/ic3me-15.2015.113 DO - https://doi.org/10.2991/ic3me-15.2015.113 ID - Jin2015/08 ER -