Performance of a compaction-grouted soil nail in laboratory tests

  • Xinyu Ye
  • Qiong Wang
  • Shanyong Wang
  • Scott Sloan
  • Daichao Sheng
Research Paper


This study proposed a new soil nail known as the compaction-grouted soil nail, and a physical model was established to investigate its pull-out behaviour with different grouting pressures. The study on scale effect of the physical model was performed subsequently via numerical modelling. Additionally, interface shear tests were performed using the same boundary conditions as the physical model test. The strength parameters obtained were used to estimate the pull-out resistance of a conventional soil nail. The merits of these two soil nail types were compared based on their pull-out resistances. The physical model test results showed that the pull-out resistance of the compaction-grouted soil nail increases with increasing grouting pressure. In addition, the pull-out resistance exhibits hardening behaviour without a yield point, indicating that the compaction-grouted soil nail enables soils to remain stable against a relatively large deformation before ultimate failure. Furthermore, a higher grouting pressure results in a higher rate of increase for pull-out resistance versus pull-out displacement, which improves the performance of the compaction-grouted soil nail in the stabilization of large deformation problems. A comparison of the two types of soil nails suggests that the new compaction-grouted soil nail is more sensitive to grouting pressure than the conventional soil nail in terms of pull-out resistance improvement. In other words, the performance (pull-out resistance) of the compaction-grouted soil nail can be markedly improved by increasing the grouting pressure without inducing any accidental or undesired cracking or soil displacement.


Compaction grouting Direct shear test Physical model test Pull-out resistance Soil nail 



The work described in this paper was partially supported by ARC Future Fellowship Grant FT140100019 and ARC Discovery Project Grant DP140100509. The authors are grateful for this financial support.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Xinyu Ye
    • 1
  • Qiong Wang
    • 2
  • Shanyong Wang
    • 1
  • Scott Sloan
    • 1
  • Daichao Sheng
    • 1
  1. 1.ARC Centre of Excellence for Geotechnical Science and EngineeringThe University of NewcastleCallaghanAustralia
  2. 2.Key Laboratory of Geotechnical and Underground Engineering of Ministry of EducationTongji UniversityShanghaiPeople’s Republic of China

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