View in EDS PDF Full Text

Effect of Microbial-Induced Carbonate Precipitation Technique on Properties of Recycled Clay Brick Aggregates.

Saved in:
Bibliographic Details
Title: Effect of Microbial-Induced Carbonate Precipitation Technique on Properties of Recycled Clay Brick Aggregates.
Authors: Liu, Fang1, Du, Mingxing2, Wang, Jie3, Zhang, Wenyan4, Zhu, Jianping5, Feng, Chunhua4
Source: ACI Materials Journal. May2026, Vol. 123 Issue 3, p157-168. 12p.
Subjects: Compressive strength, Mineralization, Bacillus subtilis, Mineral aggregates, Bacteria
Abstract: This study employed a mixed microbial culture (MB) comprising Bacillus subtilis (BS), Bacillus polymyxa (PM), and nitrate-reducing bacteria (NRB) in equal proportions. The mixed microbial culture was used to enhance recycled brick aggregate (RBA) through the microbial-induced carbonate precipitation (MICP) method, thus investigating the effects of this enhancement on both the aggregate and recycled mortar properties. Results indicate that the mineralization activity of the mixed culture significantly exceeded that of individual strains, achieving an 84.64% mineralization rate after 14 days. MICP-enhanced RBA demonstrated markedly improved performance. The compressive strength of the reinforced recycled mortar increased by 32.62% at 3 days and 22.6% at 28 days, with the 28-day compressive strength approaching that of cement mortar using natural aggregates. The interfacial transition zone (ITZ) properties were significantly improved, with their width reduced from 30 to 35 µm to 20 to 25 µm. This study provides experimental evidence for RBA reinforcement technology while offering technical support for the resource use of RBAs. [ABSTRACT FROM AUTHOR]
Copyright of ACI Materials Journal is the property of American Concrete Institute 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.)
Database: Engineering Source
FullText Links:
  – Type: pdflink
Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 194286856
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Effect of Microbial-Induced Carbonate Precipitation Technique on Properties of Recycled Clay Brick Aggregates.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Fang%22">Liu, Fang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Du%2C+Mingxing%22">Du, Mingxing</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Wang%2C+Jie%22">Wang, Jie</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Wenyan%22">Zhang, Wenyan</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhu%2C+Jianping%22">Zhu, Jianping</searchLink><relatesTo>5</relatesTo><br /><searchLink fieldCode="AR" term="%22Feng%2C+Chunhua%22">Feng, Chunhua</searchLink><relatesTo>4</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22ACI+Materials+Journal%22">ACI Materials Journal</searchLink>. May2026, Vol. 123 Issue 3, p157-168. 12p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Compressive+strength%22">Compressive strength</searchLink><br /><searchLink fieldCode="DE" term="%22Mineralization%22">Mineralization</searchLink><br /><searchLink fieldCode="DE" term="%22Bacillus+subtilis%22">Bacillus subtilis</searchLink><br /><searchLink fieldCode="DE" term="%22Mineral+aggregates%22">Mineral aggregates</searchLink><br /><searchLink fieldCode="DE" term="%22Bacteria%22">Bacteria</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: This study employed a mixed microbial culture (MB) comprising Bacillus subtilis (BS), Bacillus polymyxa (PM), and nitrate-reducing bacteria (NRB) in equal proportions. The mixed microbial culture was used to enhance recycled brick aggregate (RBA) through the microbial-induced carbonate precipitation (MICP) method, thus investigating the effects of this enhancement on both the aggregate and recycled mortar properties. Results indicate that the mineralization activity of the mixed culture significantly exceeded that of individual strains, achieving an 84.64% mineralization rate after 14 days. MICP-enhanced RBA demonstrated markedly improved performance. The compressive strength of the reinforced recycled mortar increased by 32.62% at 3 days and 22.6% at 28 days, with the 28-day compressive strength approaching that of cement mortar using natural aggregates. The interfacial transition zone (ITZ) properties were significantly improved, with their width reduced from 30 to 35 µm to 20 to 25 µm. This study provides experimental evidence for RBA reinforcement technology while offering technical support for the resource use of RBAs. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of ACI Materials Journal is the property of American Concrete Institute 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.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=194286856
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.14359/51749412
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 12
        StartPage: 157
    Subjects:
      – SubjectFull: Compressive strength
        Type: general
      – SubjectFull: Mineralization
        Type: general
      – SubjectFull: Bacillus subtilis
        Type: general
      – SubjectFull: Mineral aggregates
        Type: general
      – SubjectFull: Bacteria
        Type: general
    Titles:
      – TitleFull: Effect of Microbial-Induced Carbonate Precipitation Technique on Properties of Recycled Clay Brick Aggregates.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Liu, Fang
      – PersonEntity:
          Name:
            NameFull: Du, Mingxing
      – PersonEntity:
          Name:
            NameFull: Wang, Jie
      – PersonEntity:
          Name:
            NameFull: Zhang, Wenyan
      – PersonEntity:
          Name:
            NameFull: Zhu, Jianping
      – PersonEntity:
          Name:
            NameFull: Feng, Chunhua
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 0889325X
          Numbering:
            – Type: volume
              Value: 123
            – Type: issue
              Value: 3
          Titles:
            – TitleFull: ACI Materials Journal
              Type: main
ResultId 1