用水泥和灰作为料材料稳定细粒度土壤的实验和差异分析
Sadiq Iliyas1,2, Ahmad Idris3, Ibrahim Haruna Umar1
1School of Resources and Safety Engineering, Central South University, Changsha 410083, China.
Materials (Basel, Switzerland)
|May 25, 2024
概括
水泥和灰 (SDA) 有效地稳定了有问题的细粒度土壤. 使用6%的水泥和6%的SDA获得了最佳结果,显著提高了强度,并减少了用于建筑应用的导电性和收缩.
科学领域:
- 地质技术工程 地质技术工程
- 土木工程材料科学土木工程材料科学
背景情况:
- 细粒度土壤由于体积变化和低强度而存在工程挑战.
- 土壤稳定对于改善建筑中的有问题的土壤至关重要.
- 粉灰 (SDA) 是可持续土壤稳定的一个潜在的副产品.
研究的目的:
- 评估水泥和粉灰 (SDA) 在稳定细粒度土壤中的有效性.
- 确定水泥和SDA的最佳比例,以稳定土壤.
- 评估稳定对不受限制的压力强度 (UCS),液压导电性 (HC) 和体积收缩应变 (VSS) 的影响.
主要方法:
- 土壤样本稳定了水泥 (0-9%) 和SDA (0-10%) 的不同百分比.
- 包括UCS,HC和VSS在内的工程特性经过实验确定.
- 使用双向ANOVA分析稳定效应的统计学意义.
主要成果:
- 在6%的水泥和6%的SDA时观察到最佳稳定性.
- UCS从51增加到375 kN/m2,HC从1.7 × 10−8降低到4.7 × 10−10 m/s,VSS从12.8%降低到3.51%.
- 无论是水泥还是SDA,在所有测试的工程性能上都显示出了统计学上显著的改善 (p < 0.05).
结论:
- 6%的水泥和6%的SDA的联合添加显著提高了细粒度土壤的强度,液压导电性和体积变化特性.
- 粉灰 (SDA) 稳定提供了一种可持续的方法来改善建筑用土壤特性.
- 该研究证实了使用水泥和SDA作为土壤稳定剂的定量益处和统计意义.
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