Academic Bibliography

 Search 200 years of publications by Ghent University researchers.
Advanced search
2 files | 14.13 MB
Add to list
  1. Search results
  2. Soil conditioning study in sand based...

Soil conditioning study in sand based on compression and pressurized shear tests

Zhongtian Chen, Chuan He, Yong Fang, Adam Bezuijen (UGent) and Zhigang Yao
(2026) TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY. 167.
Author
Organization
Abstract
Soil conditioning is widely used to ensure tunnel efficiency in earth pressure balance (EPB) shield tunnelling. Compressibility, shear strength and tangential adhesion strength are key parameters to evaluate the effectiveness of soil conditioning. This paper studies these parameters by means of pressurized vane and plate shear tests and compression tests. The total vertical and lateral pressure, pore pressure, peak and residual torque are recorded and analysed. The results show that the difference between the peak and residual torque of vane and plate shear tests decreases with foam injection ratio (FIR), and the injection of foam increases the ratio between tangential adhesion strength and shear strength (ratio α). There is a transitional void ratio (etran) of 1.1 times the maximum void ratio (emax). Conditioned sand behaves like isotropic material when the void ratio is higher than etran. Effective stress starts to show when the void ratio is lower than etran, leading to an increase of the torque measured, a decrease of compressibility and a decrease of ratio α from 0.76 to 0.47. The test results for foam with various foaming agent concentrations (Cf) show that the Cf of foam should be higher than 3% or the foam bubbles will collapse during the mixing with sand.
Keywords
Soil conditioning, Shear strength, Tangential adhesion strength, Compression, Void ratio, MACHINE SCREW CONVEYORS, MECHANICS

Downloads

  • Download
    (...).pdf
    • full text (Published version)
    • |
    • UGent only
    • |
    • PDF
    • |
    • 11.65 MB
  • Download
    Chen Z et al Accepted Manuscript.docx
    • full text (Accepted manuscript)
    • |
    • open access
    • |
    • Word
    • |
    • 2.47 MB

Citation

Please use this url to cite or link to this publication:

MLA
Chen, Zhongtian, et al. “Soil Conditioning Study in Sand Based on Compression and Pressurized Shear Tests.” TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, vol. 167, 2026, doi:10.1016/j.tust.2025.107032.
APA
Chen, Z., He, C., Fang, Y., Bezuijen, A., & Yao, Z. (2026). Soil conditioning study in sand based on compression and pressurized shear tests. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 167. https://doi.org/10.1016/j.tust.2025.107032
Chicago author-date
Chen, Zhongtian, Chuan He, Yong Fang, Adam Bezuijen, and Zhigang Yao. 2026. “Soil Conditioning Study in Sand Based on Compression and Pressurized Shear Tests.” TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 167. https://doi.org/10.1016/j.tust.2025.107032.
Chicago author-date (all authors)
Chen, Zhongtian, Chuan He, Yong Fang, Adam Bezuijen, and Zhigang Yao. 2026. “Soil Conditioning Study in Sand Based on Compression and Pressurized Shear Tests.” TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 167. doi:10.1016/j.tust.2025.107032.
Vancouver
1.
Chen Z, He C, Fang Y, Bezuijen A, Yao Z. Soil conditioning study in sand based on compression and pressurized shear tests. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY. 2026;167.
IEEE
[1]
Z. Chen, C. He, Y. Fang, A. Bezuijen, and Z. Yao, “Soil conditioning study in sand based on compression and pressurized shear tests,” TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, vol. 167, 2026.
@article{01K4M4GBCHCRFKQB40P7RDT8F8,
  abstract     = {{Soil conditioning is widely used to ensure tunnel efficiency in earth pressure balance (EPB) shield tunnelling. Compressibility, shear strength and tangential adhesion strength are key parameters to evaluate the effectiveness of soil conditioning. This paper studies these parameters by means of pressurized vane and plate shear tests and compression tests. The total vertical and lateral pressure, pore pressure, peak and residual torque are recorded and analysed. The results show that the difference between the peak and residual torque of vane and plate shear tests decreases with foam injection ratio (FIR), and the injection of foam increases the ratio between tangential adhesion strength and shear strength (ratio α). There is a transitional void ratio (etran) of 1.1 times the maximum void ratio (emax). Conditioned sand behaves like isotropic material when the void ratio is higher than etran. Effective stress starts to show when the void ratio is lower than etran, leading to an increase of the torque measured, a decrease of compressibility and a decrease of ratio α from 0.76 to 0.47. The test results for foam with various foaming agent concentrations (Cf) show that the Cf of foam should be higher than 3% or the foam bubbles will collapse during the mixing with sand.}},
  articleno    = {{107032}},
  author       = {{Chen, Zhongtian and He, Chuan and Fang, Yong and Bezuijen, Adam and Yao, Zhigang}},
  issn         = {{0886-7798}},
  journal      = {{TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY}},
  keywords     = {{Soil conditioning,Shear strength,Tangential adhesion strength,Compression,Void ratio,MACHINE SCREW CONVEYORS,MECHANICS}},
  language     = {{eng}},
  pages        = {{12}},
  title        = {{Soil conditioning study in sand based on compression and pressurized shear tests}},
  url          = {{http://doi.org/10.1016/j.tust.2025.107032}},
  volume       = {{167}},
  year         = {{2026}},
}
Altmetric
View in Altmetric
Web of Science
Times cited: