使用棕纤维改进了在细砂上的柔性路面的成本优化,使用棕纤维进行了改进
Ahmed H Elbosraty1, M Bahr1, Ahmed M Ebid2
1Department of Civil Engineering, Al-Azhar University in Egypt, Cairo, Egypt.
Scientific reports
|May 20, 2025
概括
将棕纤维添加到细砂中可以显著提高其加利福尼亚轴承比率 (CBR) 值,提高道路稳定性并降低成本. 通过1.0%的纤维含量获得了最佳结果,为路面工程提供了可持续的解决方案.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 地质技术工程 地质技术工程
背景情况:
- 改善细砂地下土壤的加利福尼亚承载比率 (CBR) 对灵活的路面稳定性和成本效益至关重要.
- 棕纤维提供了一个潜在的可持续和经济的强化材料,用于土壤稳定.
研究的目的:
- 研究棕纤维含量对细砂CBR值的影响.
- 确定最佳的棕纤维含量,以最大限度地提高CBR.
- 评估改进CBR对路面设计和城市和农村道路成本的影响.
主要方法:
- 试验测试精细的沙子与不同含量的棕纤维混合 (0.5%,1.0%,1.5%).
- 确定每个混合物的CBR值.
- 应用AASHTO路面设计指南来分析路面厚度和节省成本.
- 对改善土壤和铺路层的成本效益分析.
主要成果:
- 25%的最大CBR值是在1.0%的棕纤维含量下实现的;较高的百分比导致CBR由于纤维聚类而下降.
- 地下CBR的增加显著降低了基层和亚基层所需的厚度和成本.
- 使用亚基层对于弱农村土壤 (CBR < 20%) 和交通繁忙的城市道路具有成本效益.
结论:
- 棕纤维增强是一种有效,可持续,经济和环保的方法,用于提高路面施工的细砂地下土壤特性.
- 确定了成本有效的CBR优化范围:农村道路为13-17%和城市道路为17-19%,对应于特定的棕纤维含量.
- 建议进行进一步的研究,以调查在路面应用中使用棕纤维等有机增强材料的长期耐用性和环境退化.
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