用石灰和废轮胎粉提高粘土性能:机械,微观结构和统计分析
Moinul Haq1, Mehboob Anwer Khan2, Shahab Ali2
1Interdisciplinary Research Center for Construction and Building Materials (IRC-CBM), Research Institute, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia.
Environmental research
|May 24, 2024
概括
这项研究表明,将石灰和废轮胎粉添加到薄弱的粘土土壤中,可以显著提高其强度和承载能力. 最佳的组合为建筑材料提供了经济高效,环保的解决方案.
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
- 环境工程 环境工程
背景情况:
- 利用废用于土壤稳定是可持续建筑的日益增长的趋势.
- 印度软弱的粘土土壤需要增强,以改善机械性能.
研究的目的:
- 研究用石灰和废轮胎粉 (RTP) 稳定粘土土的机械和微结构性质.
- 确定最佳的混合比例,以提高地质技术性能和成本效益.
主要方法:
- 对不同百分比的石灰 (0-3.5%) 和RTP (0-15%) 的土壤混合物的实验分析.
- 测试包括塑性指数,切割强度,紧缩,三轴切割和扫描电子显微镜 (SEM).
- 用回归分析来开发关键土壤属性的预测相关性.
主要成果:
- 增加石灰和RTP含量降低了塑性指数,并提高了切削强度和压缩到最佳水平.
- 3%的石灰和12.5%的RTP混合物显示出显著的改善:36.1%的凝聚力和88.6%的承载能力.
- SEM分析表明密度更高的微观结构,改善了干密度和加州轴承比率 (CBR).
结论:
- 优化的土壤混合 (3%石灰,12.5%RTP) 与未经处理的粘土土壤相比,提供了优越的地质技术性能.
- 这种改性土壤为建筑应用提供了更强,更便宜,更环保的替代品.
- 开发的相关性准确地预测土壤的特性,促进设计和应用.
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