关于多来源固体废物对其回填泥性能影响的研究
Xinyuan Zhao1,2, Ke Yang3,2, Zhen Wei1,2
1State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mine, Anhui University of Science and Technology, Huainan, 232001, China.
Heliyon
|May 30, 2023
概括
这项研究研究使用多来源的固体废物在填埋泥中,发现和飞灰可以提高早期的强度. 优化废物比率可以提高流动性和热稳定性,从而实现可持续的处置.
科学领域:
- 材料科学 材料科学 材料科学
- 地质技术工程 地质技术工程
- 环境科学 环境科学
背景情况:
- 固体废物处理带来了环境挑战.
- 地下填埋提供了固体废物管理的可持续解决方案.
- 利用各种固体废物流需要了解它们对回填物质的影响.
研究的目的:
- 评估,飞灰,气化粗渣和脱硫石膏对回填泥性能的影响.
- 为了确定最佳的混合比率,提高流动性,早期强度和热稳定性.
- 分析复合材料回填的故障模式和热分解行为.
主要方法:
- 在回填泥上进行了流动性和强度测试.
- 热重力测量分析 (TGA) 评估了热稳定性.
- 扫描电子显微镜 (SEM) 和X射线衍射 (XRD) 分析了材料组成和微观结构.
主要成果:
- (G/SW <23%) 和飞灰通常会提高早期的强度,而会增强流动性.
- 气化粗渣 (GCS/SW <33%) 有利于早期强度,但降低了流动性;脱硫石膏改善了流动性,但没有早期强度.
- 在特定的温度下,回填表表现出明显的压缩失效模式和脱水反应.
- 较高的,飞灰和气化粗渣含量,减少了脱硫石膏,提高了高温热稳定性.
结论:
- 多种来源的固体废物的组成显著影响回填泥的性能.
- 优化,飞灰,气化粗渣和脱硫石膏的比例可以实现理想的回填性能.
- 了解这些特性对于使用固体废物进行有效和可持续的地下填充至关重要.
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