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Small cracks in concrete are a common defect, which was previously repaired using chemical grouting materials such as epoxy grouting materials. However, they are toxic and have poor compatibility with the concrete matrix. This article studies a microbial grouting material that is environmental friendliness, and good compatibility with the substrate. The optimal cultivation route and material properties are studied in this paper. It is also applied to grout in small cracks in concrete and found that microbial grouting materials have good grouting effects, with the matrix permeability coefficient decreasing from 10−5 cm/s to 10−6 cm/s.

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Research on MICP for Repairing Small Cracks in Concrete

  • 会议论文

  • 发表日期：

    2025年

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  • Wenzhao Wang,
  • Ping Fu,
  • Shaojiang Wang,
  • Zhanqing Xing,
  • Fengling Ma,
  • Liwei Huang,
  • Lina Wang,
  • Yumeng Qi

摘要

Small cracks in concrete are a common defect, which was previously repaired using chemical grouting materials such as epoxy grouting materials. However, they are toxic and have poor compatibility with the concrete matrix. This article studies a microbial grouting material that is environmental friendliness, and good compatibility with the substrate. The optimal cultivation route and material properties are studied in this paper. It is also applied to grout in small cracks in concrete and found that microbial grouting materials have good grouting effects, with the matrix permeability coefficient decreasing from 10−5 cm/s to 10−6 cm/s.