使用二硫酸稳定粘土的性能评估
Ashutosh Kumar1, Prashant Kumar2, Awdhesh Kumar Choudhary3
1Department of Civil Engineering, Mohan Babu University, Tirupati, 517102, Andhra Pradesh, India.
Scientific reports
|March 15, 2026
概括
硫酸 (LS) 有效地稳定了具有基础设施开发挑战性的粘土土壤. 通过0.75%的LS获得最佳结果,提高了土壤的强度和耐用性,同时降低了塑性.
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
- 环境工程 环境工程
背景情况:
- 城市化需要在有问题的土壤上发展基础设施.
- 低可塑性粘土 (CL) 土壤带来了工程方面的挑战.
- 可持续的土壤稳定方法对于现代建筑至关重要.
研究的目的:
- 评估硫酸盐 (LS) 作为低可塑性粘土 (CL) 的环保稳定剂.
- 评估LS对CL土壤工程性质的影响.
- 探索LS稳定土壤的微观结构变化和长期性能.
主要方法:
- 实验室测试包括阿特伯格的极限,不受限制的压缩强度 (UCS),膨胀压力和加利福尼亚轴承比率 (CBR).
- 微结构分析以了解LS在土壤中的粘合机制.
- 研究了不同的LS含量 (高达0.75%) 和固化时间.
主要成果:
- 增加LS含量降低了可塑性指数 (PI) 和增加了UCS,达到0.75%的LS.
- 较高的LS含量 (>0.75%) 导致由于聚合物相互作用的强度降低.
- 在治愈14天后,观察到CBR和减少胀的显著改善,LS为0.75%.
- 微观结构分析证实LS形成一种粘合物质,填充毛孔并增强粒子凝聚力.
结论:
- 二硫酸盐 (LS) 是一种可行的,环保稳定剂,适用于塑性较低的粘土土壤.
- 最佳的LS含量提高了土壤的强度,耐用性,并减少了胀的可能性.
- 在具有挑战性的土壤上,LS稳定为基础设施项目提供了可持续的解决方案.
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