Acta Geotechnica

, Volume 14, Issue 3, pp 825–841 | Cite as

Micromechanism of the diffusion of cement-based grouts in porous media under two hydraulic operating conditions: constant flow rate and constant pressure

  • Zilong Zhou
  • Xueming DuEmail author
  • Shanyong Wang
  • Xin Cai
  • Lu Chen
Research Paper


Cement-based grout has been widely used in various civil engineering applications. The diffusion of cement-based grouts in porous media is an important issue in soil sealing and the estimate of grouting. To better understand the effects of grouting parameters on the viscosity of slurry, the porosity of an injected media and the pressure variations under constant flow rate and constant pressure conditions, a series of laboratory tests were conducted on the fractal characteristics of sand in a column. Additionally, different grouting flow rates and pressures, water/cement ratios and mass fractal dimensions were studied. The experimental results show the following responses: (1) the variation in the diffusion pressure of the slurry under the condition of a constant pressure is clearly different from that under constant pressure. (2) There is a strong correlation between the porosity and water/cement ratio regardless different hydraulic operating conditions, whereby a reduction or increase in the water/cement ratio control the range of the slurry diffusion. (3) Regardless of the hydraulic operating conditions, the grouting pressure presents a nonlinear decreasing law with the increase in distance from the grouting source. (4) An excessive flow rate or pressure is not conducive to the diffusion of slurry.


Cement grouts Constant flow rate Constant pressure Diffusion pressure Micromechanism Porous media 



This work was supported by the National Basic Research Program of China (Grant Number 2015CB060200); the National Natural Science Foundation of China (Grant Number 41772313); the R-D program of Guangxi Province of China and the Fundamental Research Funds for the Central Universities of Central South University (Grant Number 2016zzts093). The corresponding author would like to thank the Chinese Scholarship Council for financial support toward his joint Ph.D. at the University of Newcastle, Australia. We would also like to acknowledge the reviewers for their invaluable comments.


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Copyright information

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

Authors and Affiliations

  • Zilong Zhou
    • 1
  • Xueming Du
    • 1
    • 2
    Email author
  • Shanyong Wang
    • 2
  • Xin Cai
    • 1
  • Lu Chen
    • 1
  1. 1.School of Resources and Safety EngineeringCentral South UniversityChangshaChina
  2. 2.Faculty of Engineering and Built Environment, ARC Centre of Excellence for Geotechnical Science and EngineeringThe University of NewcastleCallaghanAustralia

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