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Compressibility and permeability characteristics of dredged slurry with the skeleton construction effect of superabsorbent polymers.

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Title: Compressibility and permeability characteristics of dredged slurry with the skeleton construction effect of superabsorbent polymers.
Authors: Song, Yufan1 (AUTHOR), Cao, Yupeng2 (AUTHOR) paradise456917@163.com, Yin, Jie3 (AUTHOR), Wu, Yankai1 (AUTHOR), Sun, Shuo2 (AUTHOR), Qi, Pengfei2 (AUTHOR)
Source: Marine Georesources & Geotechnology. Nov2025, Vol. 43 Issue 11, p2146-2158. 13p.
Subjects: Compressibility, Permeability, Moisture, Superabsorbent polymers, Porosity, Dredging spoil, Oedometers (Soil mechanics), Effective stress (Soil mechanics)
Abstract: The dewatering efficiency of high-water-content dredged slurry can be significantly improved by superabsorbent polymers (SAP) under its self-weight. However, the compressibility and permeability characteristics of naturally deposited SAP-slurry mixture are not well understood. Therefore, oedometer tests were conducted starting from low initial stress to investigate the effect of SAP on the compressibility and permeability characteristics of dredged slurry. Normalized models for void ratio and permeability coefficient were established for dredged slurry in 0.6% SAP content. Quantitative evaluations were performed to assess effects of SAP on the normalized compression curve and relationship between permeability coefficient and consolidation stress. The findings indicate that SAP effectively reduces both void ratio and compressibility of dredged slurry. The compression curves of the dredged slurry containing SAP can be normalized and described by the void index when the effective stress exceeds 60 kPa. SAP modifies the pore structure of dredged slurry, significantly increasing its permeability coefficient, especially when the void ratio exceeds 2.0, at which point the permeability coefficient can increase by up to 10 times its original value. The permeability coefficient of dredged slurry doped with SAP can be normalized based on the vertical effective stress. The permeability coefficient normalization effect and adjustment effect of SAP on void ratio are significantly influenced by the consolidation stress and initial water content. [ABSTRACT FROM AUTHOR]
Copyright of Marine Georesources & Geotechnology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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An: 189009737
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  Label: Title
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  Data: Compressibility and permeability characteristics of dredged slurry with the skeleton construction effect of superabsorbent polymers.
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  Data: <searchLink fieldCode="JN" term="%22Marine+Georesources+%26+Geotechnology%22">Marine Georesources & Geotechnology</searchLink>. Nov2025, Vol. 43 Issue 11, p2146-2158. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Compressibility%22">Compressibility</searchLink><br /><searchLink fieldCode="DE" term="%22Permeability%22">Permeability</searchLink><br /><searchLink fieldCode="DE" term="%22Moisture%22">Moisture</searchLink><br /><searchLink fieldCode="DE" term="%22Superabsorbent+polymers%22">Superabsorbent polymers</searchLink><br /><searchLink fieldCode="DE" term="%22Porosity%22">Porosity</searchLink><br /><searchLink fieldCode="DE" term="%22Dredging+spoil%22">Dredging spoil</searchLink><br /><searchLink fieldCode="DE" term="%22Oedometers+%28Soil+mechanics%29%22">Oedometers (Soil mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Effective+stress+%28Soil+mechanics%29%22">Effective stress (Soil mechanics)</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The dewatering efficiency of high-water-content dredged slurry can be significantly improved by superabsorbent polymers (SAP) under its self-weight. However, the compressibility and permeability characteristics of naturally deposited SAP-slurry mixture are not well understood. Therefore, oedometer tests were conducted starting from low initial stress to investigate the effect of SAP on the compressibility and permeability characteristics of dredged slurry. Normalized models for void ratio and permeability coefficient were established for dredged slurry in 0.6% SAP content. Quantitative evaluations were performed to assess effects of SAP on the normalized compression curve and relationship between permeability coefficient and consolidation stress. The findings indicate that SAP effectively reduces both void ratio and compressibility of dredged slurry. The compression curves of the dredged slurry containing SAP can be normalized and described by the void index when the effective stress exceeds 60 kPa. SAP modifies the pore structure of dredged slurry, significantly increasing its permeability coefficient, especially when the void ratio exceeds 2.0, at which point the permeability coefficient can increase by up to 10 times its original value. The permeability coefficient of dredged slurry doped with SAP can be normalized based on the vertical effective stress. The permeability coefficient normalization effect and adjustment effect of SAP on void ratio are significantly influenced by the consolidation stress and initial water content. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Marine Georesources & Geotechnology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/1064119X.2025.2451026
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 2146
    Subjects:
      – SubjectFull: Compressibility
        Type: general
      – SubjectFull: Permeability
        Type: general
      – SubjectFull: Moisture
        Type: general
      – SubjectFull: Superabsorbent polymers
        Type: general
      – SubjectFull: Porosity
        Type: general
      – SubjectFull: Dredging spoil
        Type: general
      – SubjectFull: Oedometers (Soil mechanics)
        Type: general
      – SubjectFull: Effective stress (Soil mechanics)
        Type: general
    Titles:
      – TitleFull: Compressibility and permeability characteristics of dredged slurry with the skeleton construction effect of superabsorbent polymers.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Song, Yufan
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          Name:
            NameFull: Cao, Yupeng
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            NameFull: Yin, Jie
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            NameFull: Wu, Yankai
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            NameFull: Sun, Shuo
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            NameFull: Qi, Pengfei
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          Dates:
            – D: 01
              M: 11
              Text: Nov2025
              Type: published
              Y: 2025
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              Value: 43
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              Value: 11
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            – TitleFull: Marine Georesources & Geotechnology
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