岩纤维增强凝固与生物灵感碳酸盐沉用于稳定广的土壤
Mudassir Mehmood1,2, Ahmed M Yosri3, Wen Nie4,5
1State Key Laboratory of Metal Mining Safety and Disaster Prevention and Control, Maanshan, 243000, Anhui, China.
Scientific reports
|December 10, 2025
概括
这项研究将酶诱导碳酸盐沉 (EICP) 与玄武纤维 (BF) 结合起来,以改善广的土壤. 协同方法显著提高土壤强度,减少膨胀和透性,为土木工程提供可持续的解决方案.
科学领域:
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 广的土壤在土木工程中构成重大挑战,因为它们的体积变化行为.
- 目前的土壤改善方法往往具有环境缺陷或效果有限.
- 酶诱导碳酸盐沉 (EICP) 和玄武岩纤维 (BF) 强化是有前途的个人技术.
研究的目的:
- 调查结合EICP和BF增强的协同效应,以增强扩张性土壤特性.
- 为了最大限度地提高性能,优化EICP和BF的度.
- 评估这种综合处理的环保和持久潜力.
主要方法:
- 在广泛的土壤样本上进行了实验室实验.
- 应用了优化的EICP度 (0.75mol/L) 和BF (1.5%的重量,12毫米长度).
- 测量了膨胀压力,透性,不受限制的压力强度,凝聚力,内部摩擦角度和加利福尼亚轴承比率 (CBR).
- 微观分析 (SEM) 用于检查微观结构变化.
主要成果:
- 结合EICP和BF治疗显著降低胀压力高达95%,透率 (ks) 高达72%.
- 协同处理导致工程性质的大幅改善:不受限制的压力强度 (136%),凝聚力 (58%),内部摩擦角度 (89%),未浸泡的CBR (738%) 和浸泡的CBR (911%).
- 这些改进超过了单个EICP或BF处理的效果,SEM证实了增强的粒子结合和结构增强.
结论:
- 集成EICP生物水泥和BF强化提供了一种高效和可持续的方法来提高广的土壤性能.
- 这种环保技术与独立处理相比,提供了更好的结果,解决了地质技术应用中的关键挑战.
- 这些发现支持采用这种对持久和环保的土木工程项目的综合方法.
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