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Experimental study on deformation and strength property of compacted loess

  • Mei, Yuan (College of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Hu, Chang-Ming (College of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Yuan, Yi-Li (College of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Wang, Xue-Yan (College of Civil Engineering, Xi'an University of Architecture and Technology) ;
  • Zhao, Nan (College of Civil Engineering, Xi'an University of Architecture and Technology)
  • Received : 2015.01.30
  • Accepted : 2016.04.17
  • Published : 2016.07.25

Abstract

A series of experimental studies are conducted on the deformation and shear strength property of compacted loess. The results reveal that the relationships of both the initial moisture content (w) and the initial degree of compaction (K) of compacted loess with cohesion (w) and the angle of internal friction (${\varphi}$) are linear. The relationship between the secant modulus ($E_{soi}$) and K is also linear. The relationship between $E_{soi}$ and w can be fitted well by a second-order polynomial. Further, when the influences of w and K are ignored, the relationship between the confined compression strain (${\varepsilon}$) and vertical pressure (p) can be expressed by a formula. A correction formula for the deformation of compacted loess caused by a change in w and K is derived on the basis of the study results.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

References

  1. Acharya, G., Cochrane, T., Davies, T. and Bowman, E. (2011), "Quantifying and modeling post-failure sediment yields from laboratory-scale soil erosion and shallow landslide experiments with silty loess", Geomorphology, 129(1-2), 49-58. https://doi.org/10.1016/j.geomorph.2011.01.012
  2. Bowders, J.J., Loehr, J.E. and Owen, J.W. (2000), "Shear behavior of compacted silty loess", Geotechnical Special Publication, 99, 235-246.
  3. Chen, K.S. and Sha, A.M. (2009), "Study on strength characteristic for loess subgrade filter of Yumenkou-Yanliang highway", Hydrogeol. Eng. Geol., 36(5), 44-48.
  4. Chen, K.S. and Sha, A.M. (2010), "Study of deformation characteristic of compacted loess", Rock Soil Mech., 31(4), 1023-1030.
  5. Cheng, H.T., Liu, B.J. and Xie, Y.L. (2008), "Stress-strain-time behavior of compacted loess", J. Chang'an Univ. (Natural Science Edition), 28(1), 6-9.
  6. Daehyeon, K. and Kang, S.S. (2013), "Engineering properties of compacted loesses as construction materials", J. Civil Eng., 17(2), 335-341.
  7. Dzagov, A.M. (2009), "Determination of characteristics of the proneness of loess soils to slump-type settlement", Soil Mech. Found. Eng., 46(6), 260-268. https://doi.org/10.1007/s11204-010-9078-4
  8. Fang, X.W., Shen, C.N., Chen, Z.H. and Zhang, W. (2011), "Triaxial wetting tests of intact $Q_2$ loess by computed tomography", China Civil Eng. J., 44(10), 98-106.
  9. Haeri, S.M., Garakani, A., Khosravi, A. and Meehan, C.L. (2014), "Assessing the hydro-mechanical behavior of collapsible soils using a modified triaxial test device", Geotech. Test. J., 37(2), 190-204. https://doi.org/10.1520/GTJ20130034
  10. Haeri, S.M., Khosravi, A., Garakani, A.A. and Ghazizadeh, S. (2016), "Effect of soil structure and disturbance on hydromechanical behavior of collapsible loessial soils", Int. J. Geomech. [Online Publication]
  11. He, Q.F. (2008), "Study on the mechanical and rheological properties of Yan'an $Q_2$ loess", Ph.D. Dissertation; Chang'an University, Xi'an, China.
  12. Li, B.X. and Miao, T.D. (2009), "Research on water sensitivity of loess shear strength", Chinese J. Rock Mech. Eng., 25(5), 1003-1008.
  13. Liang, Q.G., Li, J., Wu, X.Y. and Zhou, A.N. (2015), "Anisotropy of $Q_2$ loess in the Baijiapo tunnel on the Lanyu railway, China", Bull. Eng. Geol. Environ., 75(1), 109-124.
  14. Luo, Y.D. (2011), "Research on shear strength of compacted soils considering saturation degree", Rock and Soil Mechanics, 32(10), 3143-3148.
  15. Luo, Y., Wang, T.H., Liu, X.J. and Zhang, H. (2014), "Laboratory study on shear strength of loess joint", Arab. J. Sci. Eng., 39(8), 7549-7554. https://doi.org/10.1007/s13369-014-1318-x
  16. Munoz-Castelblanco, J.A., Delage, P., Pereira, J.M. and Cui, Y.J. (2011), "Some aspects of the compression and collapse behaviour of an unsaturated natural loess", Geotechnique Letters, 1(2), 17-22. https://doi.org/10.1680/geolett.11.00003
  17. Munoz-Castelblanco, J.A., Pereira, J.M., Delage, P. and Cui, Y.J. (2012), "The water retention properties of a natural unsaturated loess from Northern France", Geotechnique, 62(2), 95-106. https://doi.org/10.1680/geot.9.P.084
  18. Olson, R.E. (1998), "Settlement of embankments on soft clay", J. Geotech. Geoenviron. Eng., 124(8), 659-669. https://doi.org/10.1061/(ASCE)1090-0241(1998)124:8(659)
  19. Qian, Z.Z., Lu, X.L., Yang, W.Z. and Cui, Q. (2014), "Behaviour of micropiles in collapsible loess under tension or compression load", Geomech. Eng., Int. J., 7(5), 477-493. https://doi.org/10.12989/gae.2014.7.5.477
  20. Rahardjo, H., Meilani, I., Leong, E.C. and Rezaur, R.B. (2009), "Shear strength characteristics of a compacted soil under infiltration conditions", Geomech. Eng., Int. J., 1(1), 35-52. https://doi.org/10.12989/gae.2009.1.1.035
  21. Shen, C.N., Fang, X.W. and Wang, H.W. (2009), "Research on effects of suction, water content and dry density on shear strength of remolded unsaturated soils", Rock Soil Mech., 30(5), 1347-1352.
  22. Tang, H., Dang, Q., Duan, Z., Zhao, F.S. and Song, F. (2014), "Study on creep characteristics of $Q_2$ loess of Xianyang area in the Guanzhong basin", J. Disast. Prevent. Mitig. Eng., 34(6), 758-763.
  23. Vahedifard, F., Leshchinsky, D., Mortezaei, K. and Lu, N. (2016), "Effective stress-based limit-equilibrium analysis for homogeneous unsaturated slopes", Int. J. Geomech. [Online Publication]
  24. Vilar, O.M. and Rodrigues, R.A. (2011), "Collapse behavior of soil in a Brazilian region affected by a rising water table", Can. Geotech. J., 48(2), 226-233. https://doi.org/10.1139/T10-065
  25. Wang, L.H., Bai, X.H. and Feng, J.Q. (2010), "Discussion on shearing strength influencing factors of compacted loess-like backfill", Chinese J. Geotech. Eng., 32, 132-136.
  26. Wang, J.J., Liang, Y., Zhang, H.P., Wu, Y. and Lin, X. (2014a), "A loess landslide induced by excavation and rainfall", Landslides, 11(1), 141-152. https://doi.org/10.1007/s10346-013-0418-0
  27. Wang, C.D., Zhou, S.H., Guo, P.J. and Wang, B.L. (2014b), "Experimental analysis on settlement controlling of geogrid-reinforced pile-supported embankments on collapsible loess in high-speed railway", Int. J. Pave. Eng., 15(9), 867-878. https://doi.org/10.1080/10298436.2014.943130
  28. Wang, X.L., Zhu, Y.P. and Huang, X.F. (2014c), "Field tests on deformation property of self-weight collapsible loess with large thickness", Int. J. Geomech., 14(3), 04014001. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000320
  29. Wu, W.J., Chen, W.W., Song, B.H., Feng, L.T. and Ye, W.L. (2012), "Experiment on the shear characteristics of undisturbed $Q_2$ loess in Lanzhou", J. Lanzhou Univ. (Natural Sciences), 48(6), 21-25.
  30. Zhang, F.Y., Wang, G.H., Kamai, T., Chen, W.W., Zhang, D.X. and Yang, J. (2013), "Undrained shear behavior of loess saturated with different concentrations of sodium chloride solution", Eng. Geol., 155(3), 69-79. https://doi.org/10.1016/j.enggeo.2012.12.018
  31. Zhuang, J.Q. and Peng, J.B. (2014), "A coupled slope cutting - A prolonged rainfall-induced loess landslide: a 17 October 2011 case study", Bull. Eng. Geol. Environ., 73(4), 997-1011. https://doi.org/10.1007/s10064-014-0645-1

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