无害的城市固体废物焚烧灰对回收聚合物混凝土的宏观性质和微观结构的影响
Bochen Song1, Yefan Li2, Wengang Zhang1
1School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China.
Materials (Basel, Switzerland)
|May 7, 2025
概括
无害的城市固体废物焚烧飞灰 (HMSWIFA) 提高了回收聚合混凝土 (RCA) 的强度和抗性. 最佳的颗粒大小 (600-900微米) 和剂量 (10-15%) 提高了性能,有助于废物回收.
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:
- 城市化增加了城市固体废物,需要可持续的建筑材料解决方案.
- 无害的城市固体废物焚烧飞灰 (HMSWIFA) 是建设中的一个有希望的替代粘合剂.
- HMSWIFA的特性显著影响回收聚合混凝土 (RCA) 的性能.
研究的目的:
- 调查HMSWIFA含量和颗粒大小对RCA特性的影响.
- 分析对压力强度,屈曲强度和抗性的影响.
- 为了阐明HMSWIFA在RCA中的"颗粒大小-混合物-性能"之间的关系.
主要方法:
- 用不同的HMSWIFA剂量和颗粒大小制备RCA作为水泥替代品.
- 机械测试:压力强度 (CS) 和屈曲强度 (FS).
- 耐久性测试:耐性和扫描电子显微镜 (SEM) 的表征.
主要成果:
- HMSWIFA增强了RCA的CS和抗能力.
- 最佳的修改是通过600-900μm的HMSWIFA在10-15%的添加剂中实现的.
- 28天CS增加了1.90-3.60%;耐性改善;动态弹性模量增加了16.09-16.44%.
- 在最佳颗粒大小的高剂量下,FS降低了1.81%.
结论:
- 控制的HMSWIFA颗粒大小和剂量优化RCA性能.
- 对于RCA来说,HMSWIFA提供了协同作用的机械和耐久性增强.
- 结果支持在RCA利用HMSWIFA用于废物回收和减少污染.
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