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Volume 38 Issue z2
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HAN Hua-qiang, CHEN Sheng-shui, FU Hua, ZHENG Cheng-feng, LING Hua, SHI Bei-xiao. Experimental study on dynamic properties of cemented sand[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(z2): 54-60. DOI: 10.11779/CJGE2016S2009
Citation: HAN Hua-qiang, CHEN Sheng-shui, FU Hua, ZHENG Cheng-feng, LING Hua, SHI Bei-xiao. Experimental study on dynamic properties of cemented sand[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(z2): 54-60. DOI: 10.11779/CJGE2016S2009
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Experimental study on dynamic properties of cemented sand

  • 1. Nanjing Hydraulic Research Institute, Nanjing 210029, China;
    2.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing 210029, China;
    3. Key Laboratory Failure Mechanism and Safety Control Techniques of Earth-Rock Dam of the Ministry of Water Resources, Nanjing 210024, China

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  • Received Date: May 18, 2016
  • Published Date: October 19, 2016
    Graphical Abstract
    • Abstract
  • The dynamic properties and anti-liquefaction characteristics of sands and cemented sand (CS) are comparatively studied by using lab dynamic triaxial shear tests. It is shown that the capability of sand to resist deformation under dynamic load is significantly improved by adding cementing materials. Under lower adding of cementing materials, the dynamic properties of sands still play a leading role in CS, and they can be calculated using the dynamic constitutive model proposed by Zhujiang Shen. The dynamic modulus of CS is increased by more than 3 times and the anti-liquefaction dynamic shear stress by over 2 times than those of sand, while the initial deformation and the cumulative dynamic permanent deformation significantly decrease. Compared with high confining pressure and consolidation stress, the cemented action is more sensitive to lower stress state. The lower the stress state, the more obvious the effect of the cemented action to improve the capability of sand to resist deformation under dynamic load. With the adding of cementing materials, earthquake liquefaction of the shallow sand hardly occurs, and the liquefaction failure of deep sand is mainly deformation one with more cumulative dynamic pore water pressure.
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