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工业固体废物稳定低液量极限土壤的机械性能和耐久性性能
Xiaoli Wang1,2, Xiancong Wang1, Pingfeng Fu1
1School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China.
Materials (Basel, Switzerland)
|January 25, 2025
概括
本研究介绍了一种由工业废物制成的环保土壤稳定剂 (GSCFC). GSCFC稳定土壤显示了改善的机械性能和耐久性,为道路建设提供了可持续的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
- 环境工程 环境工程
背景情况:
- 低液极限土壤需要稳定,以提高机械性能和耐久性.
- 传统的基于水泥的稳定剂具有环境和成本的缺点.
- 工业固体废物为开发可持续建筑材料提供了机会.
研究的目的:
- 开发和评估一个环保的,完全固体的,基于废物的稳定剂 (GSCFC) 用于低液限土壤.
- 评估GSCFC稳定土壤的机械性能和耐久性.
- 为了确定GSCFC稳定剂的最佳成分.
主要方法:
- 使用了五种工业固体废物:地面颗粒高炉渣 (GGBS),钢渣 (SS),煤炭飞灰 (CFA),烟气脱硫 (FGD) 石膏和碳化物渣 (CS).
- 使用无限制的压力强度 (UCS),加利福尼亚轴承比率 (CBR) 和冷解和湿干循环评估性能.
- 采用瑞特维尔德方法进行矿物阶段分析.
主要成果:
- 确定了最佳的GSCFC组成 (15%的SS,12%的GGBS,16%的FGD石膏,36%的CS,12%的CFA).
- 与普通波特兰水泥 (OPC) 相比,GSCFC稳定土壤显示出更高的CBR值和更高的耐久性 (UCS,膨胀率,BDR).
- 瑞特维尔德的分析显示,增加了水化产品 (乙石和C-S-H),提高了土壤强度.
结论:
- GSCFC稳定土壤显示出可持续道路基层应用的巨大潜力.
- 这种以废物为基础的稳定剂为传统水泥提供了一种可持续,经济高效和环保的替代方案.
- 这项研究支持多种固体废物的协同利用,以实现先进的土壤稳定.
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