Microbial Self-Healing Concrete: A Comprehensive Review of Mechanisms, Application, and Future Directions
微生物による自己治癒コンクリート：機構、応用、および将来の方向性に関する包括的レビュー (AI 翻訳)
Lixin Li, Xuan Zhao, Tao Sheng, Yaozu Ni, Bin Shen, Xinyue Zhao
🤖 gxceed AI 要約
日本語
本レビューは、微生物（細菌、真菌、微細藻類）を用いた自己治癒コンクリートの機構と応用を包括的に整理。尿素系プロセスからのアンモニア排出削減や廃棄物由来栄養源の活用による持続可能性向上、さらに光合成微生物によるCO2削減可能性に焦点を当てている。実規模での亀裂修復や透水低減の証拠を示し、今後の研究課題として極限環境微生物の選抜や栄養循環最適化を提示。
English
This review comprehensively examines microbial self-healing concrete mechanisms, emphasizing ammonia emission reduction from urea-based processes and the use of waste-derived nutrients to enhance sustainability. It highlights the potential of photosynthetic microbes for CO2 mitigation and presents field-scale evidence of crack healing and permeability reduction. Key barriers and future research directions are discussed.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の老朽化したインフラ問題に対し、自己治癒コンクリートは維持管理コスト削減と耐久性向上に貢献する可能性がある。また、廃棄物由来栄養源の活用は循環経済の観点から日本でも関心が高い。ただし、現時点で日本特有の政策や規制との直接的な連携は薄い。
In the global GX context
This review advances global sustainable infrastructure by integrating circular economy principles and CO2 reduction into construction materials. The focus on waste-derived nutrients and microbial pathways aligns with global decarbonization and resource efficiency goals, offering a pathway for reducing concrete's environmental footprint.
👥 読者別の含意
🔬研究者:Provides a structured overview of microbial self-healing concrete mechanisms and identifies key research gaps, such as extremophilic strain screening and nutrient cycle optimization.
🏢実務担当者:Offers insights into implementation strategies and field-scale evidence that could inform the adoption of self-healing concrete for cost-effective infrastructure maintenance.
🏛政策担当者:Highlights the potential of bioconcrete to support sustainable construction and circular economy policies, though practical scalability and cost barriers remain.
📄 Abstract（原文）
Microbial self-healing concrete presents a sustainable strategy to enhance infrastructure durability while addressing critical environmental challenges. This review examines the role of bacteria, fungi, and microalgae in autonomously repairing cracks through calcium carbonate (CaCO3) precipitation. Particular emphasis is placed on mitigating ammonia emissions from urea-based processes and integrating waste-derived nutrients (e.g., corn steep liquor, tofu wastewater) to minimize reliance on synthetic additives. Implementation strategies, including direct mixing, dropping, vascular networks, and microencapsulation, are evaluated for their effectiveness across diverse environmental conditions, supported by field-scale evidence of crack healing and reduced permeability. Furthermore, the review highlights the potential of photosynthetic microbes to reduce CO2 emissions, directly supporting climate change mitigation and circular economy goals. Finally, critical barriers—including high initial costs and long-term stability—are assessed alongside future research priorities, such as screening extremophilic strains and optimizing nutrient cycles. Ultimately, this work offers actionable insights for integrating bioconcrete into sustainable infrastructure management, balancing structural resilience with ecological responsibility.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1061/joeedu.eeeng-8641first seen 2026-05-29 05:07:26 · last seen 2026-06-16 04:41:46
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