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Compression behavior and microstructure mechanism of GGBS-stabilized dredged clay.

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Title: Compression behavior and microstructure mechanism of GGBS-stabilized dredged clay.
Authors: Zhu, Wei1 (AUTHOR), Feng, Zhenyan1 (AUTHOR), Miao, Yonghong1 (AUTHOR), Cheng, Ruoming1 (AUTHOR), Yin, Jie1 (AUTHOR) yinjie@ujs.edu.cn
Source: Marine Georesources & Geotechnology. Nov2025, Vol. 43 Issue 11, p2340-2350. 11p.
Subjects: Compressibility, Microstructure, Recycling management, Slag cement, Materials compression testing, Dredging spoil, Stabilizing agents, Diagenesis
Abstract: This study investigates the effectiveness of ground granulated blast-furnace slag (GGBS) in improving the compressibility of dredged clay, addressing the pressing need for sustainable dredged material recycling. A series of one-dimensional compression tests were conducted on dredged clay samples treated with varying GGBS contents (0%, 10%, 20%, and 30%) and curing times (3 h, 7 d, and 28 d). Results showed a significant reduction in the compression coefficient, ranging from 0.04 to 0.35 MPa−1 for treated samples, compared to 0.70 MPa−1 for untreated clay. Increasing the GGBS content or extending the curing time further reduces the compressibility of the dredged clay. The compression indices in both pre- and post-yield stages, as well as the swelling index during unloading, decrease linearly with higher GGBS content and decrease nonlinearly with longer curing times. Specifically, these indices and the swelling index decrease rapidly from 3 h to 7 d of curing, then level off from 7 d to 28 d. The compression yield stress increases with curing time and GGBS content, showing lower compressibility before yielding and a marked increase in compressibility after yielding. Microstructural analysis via SEM revealed a transition from a porous to a cohesive structure, facilitated by hydration and pozzolanic reactions forming cementitious products, such as C-S-H and C-A-S-H. [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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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Compression behavior and microstructure mechanism of GGBS-stabilized dredged clay.
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  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Zhu%2C+Wei%22">Zhu, Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Feng%2C+Zhenyan%22">Feng, Zhenyan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Miao%2C+Yonghong%22">Miao, Yonghong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cheng%2C+Ruoming%22">Cheng, Ruoming</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yin%2C+Jie%22">Yin, Jie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> yinjie@ujs.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Marine+Georesources+%26+Geotechnology%22">Marine Georesources & Geotechnology</searchLink>. Nov2025, Vol. 43 Issue 11, p2340-2350. 11p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Compressibility%22">Compressibility</searchLink><br /><searchLink fieldCode="DE" term="%22Microstructure%22">Microstructure</searchLink><br /><searchLink fieldCode="DE" term="%22Recycling+management%22">Recycling management</searchLink><br /><searchLink fieldCode="DE" term="%22Slag+cement%22">Slag cement</searchLink><br /><searchLink fieldCode="DE" term="%22Materials+compression+testing%22">Materials compression testing</searchLink><br /><searchLink fieldCode="DE" term="%22Dredging+spoil%22">Dredging spoil</searchLink><br /><searchLink fieldCode="DE" term="%22Stabilizing+agents%22">Stabilizing agents</searchLink><br /><searchLink fieldCode="DE" term="%22Diagenesis%22">Diagenesis</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study investigates the effectiveness of ground granulated blast-furnace slag (GGBS) in improving the compressibility of dredged clay, addressing the pressing need for sustainable dredged material recycling. A series of one-dimensional compression tests were conducted on dredged clay samples treated with varying GGBS contents (0%, 10%, 20%, and 30%) and curing times (3 h, 7 d, and 28 d). Results showed a significant reduction in the compression coefficient, ranging from 0.04 to 0.35 MPa−1 for treated samples, compared to 0.70 MPa−1 for untreated clay. Increasing the GGBS content or extending the curing time further reduces the compressibility of the dredged clay. The compression indices in both pre- and post-yield stages, as well as the swelling index during unloading, decrease linearly with higher GGBS content and decrease nonlinearly with longer curing times. Specifically, these indices and the swelling index decrease rapidly from 3 h to 7 d of curing, then level off from 7 d to 28 d. The compression yield stress increases with curing time and GGBS content, showing lower compressibility before yielding and a marked increase in compressibility after yielding. Microstructural analysis via SEM revealed a transition from a porous to a cohesive structure, facilitated by hydration and pozzolanic reactions forming cementitious products, such as C-S-H and C-A-S-H. [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.2025.2457116
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 2340
    Subjects:
      – SubjectFull: Compressibility
        Type: general
      – SubjectFull: Microstructure
        Type: general
      – SubjectFull: Recycling management
        Type: general
      – SubjectFull: Slag cement
        Type: general
      – SubjectFull: Materials compression testing
        Type: general
      – SubjectFull: Dredging spoil
        Type: general
      – SubjectFull: Stabilizing agents
        Type: general
      – SubjectFull: Diagenesis
        Type: general
    Titles:
      – TitleFull: Compression behavior and microstructure mechanism of GGBS-stabilized dredged clay.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Zhu, Wei
      – PersonEntity:
          Name:
            NameFull: Feng, Zhenyan
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            NameFull: Miao, Yonghong
      – PersonEntity:
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            NameFull: Cheng, Ruoming
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            NameFull: Yin, Jie
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            – 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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