对复合城市固体废物焚烧炉底灰预混合液化固化土壤的机械性能进行测试研究
Yawen Zhao1, Na Zhang1, Xuemei Chen2
1School of Civil & Environmental Engineering and GeographyScience, Ningbo University, NO. 818, Fenghua Street, Ningbo 315211, P.R. China.
iScience
|September 11, 2023
概括
本研究探讨在预混合液稳定土壤 (PFSS) 中使用城市固体废物焚烧底灰 (MSW-IBA). 优化NaOH和激活剂含量提高后期机械强度,促进固体废物回收利用.
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:
- 预混合液体稳定土壤 (PFSS) 是一种建筑材料.
- 城市固体废物焚烧底灰 (MSW-IBA) 是一种潜在的替代细聚合物和凝固剂.
- 优化MSW-IBA在PFSS中的使用需要了解其与化学激活剂的相互作用.
研究的目的:
- 研究NaOH预老化处理对MSW-IBA和激活剂含量对PFSS机械性能的影响.
- 描述开发的PFSS的水化产品和微观结构.
- 评估MSW-IBA回收在PFSS应用中的可行性.
主要方法:
- 用不同的NaOH和激活剂含量测试PFSS的机械强度.
- 使用像X射线衍射 (XRD) 和扫描电子显微镜 (SEM) 等技术进行水化产品分析.
- 微结构的表征,以评估密度和相位形成.
主要成果:
- 增加的NaOH和激活剂含量最初通过影响Aft形成,减少了早期的强度.
- 较高的NaOH和激活剂促进了MSW-IBA玻璃相的脱聚合.
- 增强了C-A-S-H和Mg-A-S-H凝的形成,增加了微结构密度和晚期强度.
结论:
- 基于MSW-IBA的PFSS的机械性能受到NaOH和激活剂含量的显著影响.
- 优化处理可以提高后期强度,使MSW-IBA成为PFSS中可行的组成部分.
- 这项研究证明了在建筑材料中回收固体废物的成功应用.
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