细菌混凝土:自我修复和可持续基础设施的未来
Anumol Sukumaran1,2, V Johnpaul1, N Balasundaram1
1Department of Civil Engineering, Karpagam Academy of Higher Education, Coimbatore, Tamilnadu, India.
MethodsX
|September 2, 2025
概括
这项研究使用微生物诱导的碳酸沉来提高细菌混凝土的耐用性. 特定的细菌菌株显著提高了对水,和酸的抵抗力,提供了可持续的,自我修复的建筑材料.
科学领域:
- 材料科学
- 土木工程
- 微生物学
背景情况:
- 混凝土的耐用性对于基础设施的寿命至关重要.
- 微生物诱导的碳酸沉 (MICP) 提供了一种提高混凝土性能的新方法.
- 了解不同微生物菌株的特定作用对于优化细菌混凝土至关重要.
研究的目的:
- 通过MICP研究使用各种微生物菌株增强混凝土的耐用性.
- 评估细菌混凝土在抵抗环境退化的有效性.
- 确定最佳的微生物菌株和度以提高混凝土的性能.
主要方法:
- 在混凝土中加入微生物菌株 (Bacillus Licheniformis,Bacillus Flexus,Pseudomonas stutzeri,大肠杆菌,细菌).
- 耐久性测试包括吸水,快速透性测试 (RCPT),硫酸耐受性,盐酸强度损失和吸附性.
- 使用能量散射X射线分析 (EDAX),扫描电子显微镜 (SEM) 和X射线衍射 (XRD) 的材料表征.
主要成果:
- 细菌混凝土显著减少了水的吸收和离子的透.
- 细菌细菌和Bacillus Flexus显示出最高的无性.
- 增强了对硫酸和盐酸的抵抗力, 具有自我愈合能力的证据.
- EDAX,SEM和XRD证实了碳酸的沉,矩阵的密度和裂的愈合.
结论:
- 与传统混凝土相比,细菌混凝土具有更高的耐用性和自我愈合特性.
- 特定的微生物菌株,特别是Bacillus subtilis和Bacillus Flexus,在106细胞/毫升的度下,提供了最显著的改善.
- 细菌混凝土是一种可持续的建筑材料,由于其固有的自我修复机制,其长期性能得到了提高.
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