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Performance Degradation and Service Life Prediction of Magnesium Oxychloride Cement Recycled Concrete in Western Saline Soil Environment.

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Title: Performance Degradation and Service Life Prediction of Magnesium Oxychloride Cement Recycled Concrete in Western Saline Soil Environment.
Authors: Chai, Shijie1 (AUTHOR), Wang, Nan1,2 (AUTHOR), Tian, Yuze1,3 (AUTHOR), Gong, Wei1,2 (AUTHOR), Yin, Peng2,3 (AUTHOR)
Source: Materials (1996-1944). Jun2026, Vol. 19 Issue 12, p2672. 13p.
Subjects: Durability, Mathematical models, Soil salinity, Compressive strength, Recycled concrete aggregates, Ultrasonic testing, Cement
Abstract: Highlights: The durability of MOCRC in a western saline soil environment is investigated. A multiparameter time-varying degradation model for MOCRC is established. A service life prediction of MOCRC is proposed. Western saline soil areas contain a large amount of chloride and sulfate ions, leading to a reduction in the service life of Portland concrete in this environment. Magnesium oxychloride cement recycled concrete (MOCRC) is mainly prepared with light-burnt magnesia and magnesium chloride, which is more suitable for application in a western saline soil environment than Portland concrete. In this paper, ultrasonic non-destructive testing technology was used to investigate the effects of multiple factors on the deterioration process and service life of MOCRC in a western saline soil environment. The results showed a clear functional relationship between the relative dynamic elastic modulus and the compressive strength or size of MOCRC. On this basis, a multiparameter time-varying degradation model for MOCRC considering the compressive strength, size effect, and environmental error is established. Moreover, a service life prediction model for MOCRC based on the relative dynamic elastic modulus is proposed, using reliability theory and the first-order second-moment method. This study provides a foundational method for the durability examination and service life prediction of MOCRC. [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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DbLabel: Engineering Source
An: 194907746
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PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Performance Degradation and Service Life Prediction of Magnesium Oxychloride Cement Recycled Concrete in Western Saline Soil Environment.
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  Data: <searchLink fieldCode="AR" term="%22Chai%2C+Shijie%22">Chai, Shijie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Nan%22">Wang, Nan</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tian%2C+Yuze%22">Tian, Yuze</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gong%2C+Wei%22">Gong, Wei</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yin%2C+Peng%22">Yin, Peng</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Jun2026, Vol. 19 Issue 12, p2672. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Durability%22">Durability</searchLink><br /><searchLink fieldCode="DE" term="%22Mathematical+models%22">Mathematical models</searchLink><br /><searchLink fieldCode="DE" term="%22Soil+salinity%22">Soil salinity</searchLink><br /><searchLink fieldCode="DE" term="%22Compressive+strength%22">Compressive strength</searchLink><br /><searchLink fieldCode="DE" term="%22Recycled+concrete+aggregates%22">Recycled concrete aggregates</searchLink><br /><searchLink fieldCode="DE" term="%22Ultrasonic+testing%22">Ultrasonic testing</searchLink><br /><searchLink fieldCode="DE" term="%22Cement%22">Cement</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Highlights: The durability of MOCRC in a western saline soil environment is investigated. A multiparameter time-varying degradation model for MOCRC is established. A service life prediction of MOCRC is proposed. Western saline soil areas contain a large amount of chloride and sulfate ions, leading to a reduction in the service life of Portland concrete in this environment. Magnesium oxychloride cement recycled concrete (MOCRC) is mainly prepared with light-burnt magnesia and magnesium chloride, which is more suitable for application in a western saline soil environment than Portland concrete. In this paper, ultrasonic non-destructive testing technology was used to investigate the effects of multiple factors on the deterioration process and service life of MOCRC in a western saline soil environment. The results showed a clear functional relationship between the relative dynamic elastic modulus and the compressive strength or size of MOCRC. On this basis, a multiparameter time-varying degradation model for MOCRC considering the compressive strength, size effect, and environmental error is established. Moreover, a service life prediction model for MOCRC based on the relative dynamic elastic modulus is proposed, using reliability theory and the first-order second-moment method. This study provides a foundational method for the durability examination and service life prediction of MOCRC. [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/ma19122672
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 13
        StartPage: 2672
    Subjects:
      – SubjectFull: Durability
        Type: general
      – SubjectFull: Mathematical models
        Type: general
      – SubjectFull: Soil salinity
        Type: general
      – SubjectFull: Compressive strength
        Type: general
      – SubjectFull: Recycled concrete aggregates
        Type: general
      – SubjectFull: Ultrasonic testing
        Type: general
      – SubjectFull: Cement
        Type: general
    Titles:
      – TitleFull: Performance Degradation and Service Life Prediction of Magnesium Oxychloride Cement Recycled Concrete in Western Saline Soil Environment.
        Type: main
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      – PersonEntity:
          Name:
            NameFull: Chai, Shijie
      – PersonEntity:
          Name:
            NameFull: Wang, Nan
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            NameFull: Tian, Yuze
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            NameFull: Gong, Wei
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            NameFull: Yin, Peng
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            – D: 15
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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              Value: 19
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              Value: 12
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            – TitleFull: Materials (1996-1944)
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