用低成本材料对斜坡土壤进行侵蚀控制的生物凝固的评估
M Azizul Moqsud1, Takuya Gochi2
1Department of Civil and Environmental Engineering, Yamaguchi University, Ube City, Japan. azizul@yamaguchi-u.ac.jp.
Scientific reports
|July 11, 2024
概括
使用低成本材料和本地微生物进行土壤生物凝固,可以显著降低成本,而不会影响强度. 这种方法有效地防止土壤侵蚀,使其成为斜坡稳定的一种可行的替代方案.
科学领域:
- 地质技术工程 地质技术工程
- 微生物工程 微生物工程
- 环境科学 环境科学
背景情况:
- 生物水泥化是一种有前途的土壤稳定技术.
- 实验室级材料和微生物的高成本限制了广泛采用.
- 开发具有成本效益的生物凝固方法对于实际应用至关重要.
研究的目的:
- 为了研究低成本,商业上可用的土壤生物凝固材料的有效性.
- 评估本地Cytobacillus hornekea在生物凝固过程中的表现.
- 评估生物水泥土的成本效益和机械性能.
主要方法:
- 用本地Cytobacillus hornekea和低成本材料的营养溶液对斜坡土壤进行生物化.
- 直接切割试验用于评估土壤强度.
- 扫描电子显微镜 (SEM) 用于微观结构分析.
- 人工降雨模拟以评估侵蚀控制.
主要成果:
- 低成本的生物水泥化实现了与实验室级材料 (3.4%) 相比的碳酸产量 (3.9%).
- 直接切割试验和SEM证实了低成本生物凝固的有效性.
- 生物水泥土壤在人工降雨下显著减少侵蚀 (2%) 与未经处理的土壤 (10%) 相比.
结论:
- 使用低成本材料和本地微生物进行生物凝固是一种具有成本效益和高效的土壤稳定方法.
- 这种方法为斜坡保护和侵蚀控制提供了可持续的解决方案.
- 这项研究表明,生物凝固在地质工程中具有广泛应用的潜力.
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