Method to Predict Salt Expansion Deformation in Cement-Stabilized Macadam Under Sulfate Attack Based on Pore Evolution.

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Title: Method to Predict Salt Expansion Deformation in Cement-Stabilized Macadam Under Sulfate Attack Based on Pore Evolution.
Authors: Li, Xiangyu1 (AUTHOR), Mao, Xuesong1 (AUTHOR) xuesongmao@chd.edu.cn, He, Pei1 (AUTHOR), Wu, Qian1 (AUTHOR)
Source: Materials (1996-1944). Nov2025, Vol. 18 Issue 21, p4863. 17p.
Subjects: Ettringite, Sodium sulfate, Deformations (Mechanics), Porosity, Prediction models, Sulfates, Cement
Abstract: Cement-stabilized macadam often shows salt expansion deformation under the action of a sulfate attack, and its pore structure determines its ability to accommodate this deformation. In this paper, the influence of the pore structure of cement-stabilized macadam on its macroscopic deformation is analyzed using a single-grain salt expansion deformation test, scanning electron microscopy (SEM), and computerized tomography (CT) scanning. The results show that ettringite and sodium sulfate decahydrate crystals are key factors in salt expansion deformation. In addition, we find that when the sulfate content increases from 0% to 5%, the porosity of the mixture decreases by 1.5%, the proportion of primary pores increases by 12.1%, and the linear expansion rate increases by 0.05%. Finally, a salt expansion deformation prediction model for cement-stabilized macadam is proposed, which takes the porosity of the mixture, the proportion of graded pores, and the deformation influence factor as parameters, and the error is found to be less than 10%. [ABSTRACT FROM AUTHOR]
Copyright of Materials (1996-1944) is the property of MDPI 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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  Label: Title
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  Data: Method to Predict Salt Expansion Deformation in Cement-Stabilized Macadam Under Sulfate Attack Based on Pore Evolution.
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  Data: <searchLink fieldCode="AR" term="%22Li%2C+Xiangyu%22">Li, Xiangyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mao%2C+Xuesong%22">Mao, Xuesong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> xuesongmao@chd.edu.cn</i><br /><searchLink fieldCode="AR" term="%22He%2C+Pei%22">He, Pei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Qian%22">Wu, Qian</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Nov2025, Vol. 18 Issue 21, p4863. 17p.
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  Data: <searchLink fieldCode="DE" term="%22Ettringite%22">Ettringite</searchLink><br /><searchLink fieldCode="DE" term="%22Sodium+sulfate%22">Sodium sulfate</searchLink><br /><searchLink fieldCode="DE" term="%22Deformations+%28Mechanics%29%22">Deformations (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Porosity%22">Porosity</searchLink><br /><searchLink fieldCode="DE" term="%22Prediction+models%22">Prediction models</searchLink><br /><searchLink fieldCode="DE" term="%22Sulfates%22">Sulfates</searchLink><br /><searchLink fieldCode="DE" term="%22Cement%22">Cement</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Cement-stabilized macadam often shows salt expansion deformation under the action of a sulfate attack, and its pore structure determines its ability to accommodate this deformation. In this paper, the influence of the pore structure of cement-stabilized macadam on its macroscopic deformation is analyzed using a single-grain salt expansion deformation test, scanning electron microscopy (SEM), and computerized tomography (CT) scanning. The results show that ettringite and sodium sulfate decahydrate crystals are key factors in salt expansion deformation. In addition, we find that when the sulfate content increases from 0% to 5%, the porosity of the mixture decreases by 1.5%, the proportion of primary pores increases by 12.1%, and the linear expansion rate increases by 0.05%. Finally, a salt expansion deformation prediction model for cement-stabilized macadam is proposed, which takes the porosity of the mixture, the proportion of graded pores, and the deformation influence factor as parameters, and the error is found to be less than 10%. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Materials (1996-1944) is the property of MDPI 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:
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    Identifiers:
      – Type: doi
        Value: 10.3390/ma18214863
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 17
        StartPage: 4863
    Subjects:
      – SubjectFull: Ettringite
        Type: general
      – SubjectFull: Sodium sulfate
        Type: general
      – SubjectFull: Deformations (Mechanics)
        Type: general
      – SubjectFull: Porosity
        Type: general
      – SubjectFull: Prediction models
        Type: general
      – SubjectFull: Sulfates
        Type: general
      – SubjectFull: Cement
        Type: general
    Titles:
      – TitleFull: Method to Predict Salt Expansion Deformation in Cement-Stabilized Macadam Under Sulfate Attack Based on Pore Evolution.
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            NameFull: Li, Xiangyu
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            NameFull: Mao, Xuesong
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            NameFull: He, Pei
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            NameFull: Wu, Qian
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            – D: 01
              M: 11
              Text: Nov2025
              Type: published
              Y: 2025
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              Value: 19961944
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              Value: 18
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              Value: 21
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            – TitleFull: Materials (1996-1944)
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