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Newtonian Fluid Diffusion Mechanism Considering Time-Dependent Grout Viscosity and Tortuosity Effect.

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Title: Newtonian Fluid Diffusion Mechanism Considering Time-Dependent Grout Viscosity and Tortuosity Effect.
Authors: Yang, Cheng1 (AUTHOR) yangcheng@lzjtu.edu.cn, Xiong, Zhibin1 (AUTHOR) 2390625501@qq.com, Liu, Deren1 (AUTHOR) liuderen@lzjtu.edu.cn, Wang, Xu1 (AUTHOR) wangxu@lzjtu.edu.cn, Zhang, Jiyuan1 (AUTHOR) 1562824067@qq.com, Ma, Zhicheng1 (AUTHOR) 2055124082@qq.com
Source: International Journal of Geomechanics. Jul2026, Vol. 26 Issue 7, p1-11. 11p.
Subject Terms: *Grouting, *Dynamic viscosity, *Tortuosity, *Newtonian fluids, *Darcy's law, *Computer simulation, *Porous materials
Abstract: Grouting operations are inherently concealed and unobservable, making the estimation of grout diffusion range often reliant on empirical and theoretical methods. In practical engineering, Newtonian fluid grouts frequently exhibit a columnar–hemispherical diffusion pattern. To achieve a more accurate prediction of this diffusion morphology, this study develops a two-stage columnar–hemispherical penetration grouting model for Newtonian fluids based on Darcy's law. The model comprehensively accounts for the time-dependent viscosity of the grout and the tortuosity effect. This research analyzes the factors influencing the grout diffusion radius and utilizes the COMSOL (version 6.2) Multiphysics platform to simulate the grout's penetration and diffusion process in porous media. The results demonstrate that, compared to the traditional columnar–hemispherical model, the proposed model more accurately describes the diffusion behavior of grout in porous media. The grout diffusion radius shows a positive correlation with the grouting pressure and a negative correlation with porosity. Furthermore, as the grouting time increases, the radius initially grows rapidly and then gradually levels off. The new model's prediction for the diffusion radius is 19.4% smaller than that of the traditional model, aligning more closely with practical engineering observations. The findings of this study can serve as a technical reference for grouting construction in underground engineering. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 193805098
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Newtonian Fluid Diffusion Mechanism Considering Time-Dependent Grout Viscosity and Tortuosity Effect.
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  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Yang%2C+Cheng%22">Yang, Cheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yangcheng@lzjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Xiong%2C+Zhibin%22">Xiong, Zhibin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 2390625501@qq.com</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Deren%22">Liu, Deren</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> liuderen@lzjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Xu%22">Wang, Xu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> wangxu@lzjtu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jiyuan%22">Zhang, Jiyuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 1562824067@qq.com</i><br /><searchLink fieldCode="AR" term="%22Ma%2C+Zhicheng%22">Ma, Zhicheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 2055124082@qq.com</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+Geomechanics%22">International Journal of Geomechanics</searchLink>. Jul2026, Vol. 26 Issue 7, p1-11. 11p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Grouting%22">Grouting</searchLink><br />*<searchLink fieldCode="DE" term="%22Dynamic+viscosity%22">Dynamic viscosity</searchLink><br />*<searchLink fieldCode="DE" term="%22Tortuosity%22">Tortuosity</searchLink><br />*<searchLink fieldCode="DE" term="%22Newtonian+fluids%22">Newtonian fluids</searchLink><br />*<searchLink fieldCode="DE" term="%22Darcy's+law%22">Darcy's law</searchLink><br />*<searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br />*<searchLink fieldCode="DE" term="%22Porous+materials%22">Porous materials</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Grouting operations are inherently concealed and unobservable, making the estimation of grout diffusion range often reliant on empirical and theoretical methods. In practical engineering, Newtonian fluid grouts frequently exhibit a columnar–hemispherical diffusion pattern. To achieve a more accurate prediction of this diffusion morphology, this study develops a two-stage columnar–hemispherical penetration grouting model for Newtonian fluids based on Darcy's law. The model comprehensively accounts for the time-dependent viscosity of the grout and the tortuosity effect. This research analyzes the factors influencing the grout diffusion radius and utilizes the COMSOL (version 6.2) Multiphysics platform to simulate the grout's penetration and diffusion process in porous media. The results demonstrate that, compared to the traditional columnar–hemispherical model, the proposed model more accurately describes the diffusion behavior of grout in porous media. The grout diffusion radius shows a positive correlation with the grouting pressure and a negative correlation with porosity. Furthermore, as the grouting time increases, the radius initially grows rapidly and then gradually levels off. The new model's prediction for the diffusion radius is 19.4% smaller than that of the traditional model, aligning more closely with practical engineering observations. The findings of this study can serve as a technical reference for grouting construction in underground engineering. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1061/IJGNAI.GMENG-13558
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 1
    Subjects:
      – SubjectFull: Grouting
        Type: general
      – SubjectFull: Dynamic viscosity
        Type: general
      – SubjectFull: Tortuosity
        Type: general
      – SubjectFull: Newtonian fluids
        Type: general
      – SubjectFull: Darcy's law
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Porous materials
        Type: general
    Titles:
      – TitleFull: Newtonian Fluid Diffusion Mechanism Considering Time-Dependent Grout Viscosity and Tortuosity Effect.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Yang, Cheng
      – PersonEntity:
          Name:
            NameFull: Xiong, Zhibin
      – PersonEntity:
          Name:
            NameFull: Liu, Deren
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            NameFull: Wang, Xu
      – PersonEntity:
          Name:
            NameFull: Zhang, Jiyuan
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          Name:
            NameFull: Ma, Zhicheng
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          Dates:
            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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              Value: 15323641
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              Value: 26
            – Type: issue
              Value: 7
          Titles:
            – TitleFull: International Journal of Geomechanics
              Type: main
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