聚氨泡处理建筑废弃物的机械性能和微机理
Qiang Ma1, Jiwei Wu2, Chuheng Zhong1
1Innovation Demonstration Base of Ecological Environment Geotechnical and Ecological Restoration of Rivers and Lakes, School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan, People's Republic of China.
Environmental technology
|February 6, 2025
概括
聚氨泡粘合剂 (PFA) 有效地增强了建筑和拆除废物 (CDW),显著提高了其用于土木工程应用的压力和剪切强度. 这种新的回收方法增强了CDW的性能,为可持续的基础设施发展铺平了道路.
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.
- 废物管理 废物管理
背景情况:
- 建筑和拆除废弃物 (CDW) 的日益增加的产生带来了重大处置挑战.
- 低回收率的CDW归因于机械和工程性能差.
- 现有的CDW属性限制了其在土木工程基础设施中的有效再利用.
研究的目的:
- 调查聚氨泡粘合剂 (PFA) 作为CDW强化剂的有效性.
- 提高CDW的机械和结构性能,用于土木工程应用.
- 评估PFA修饰的CDW作为可持续建筑材料的潜力.
主要方法:
- 修改后的CDW样品被准备了不同的PFA含量.
- 进行了无限制压力强度 (UCS) 和整合无排水三轴压缩 (CU) 测试.
- 使用扫描电子显微镜 (SEM) 进行微结构分析.
主要成果:
- 在24小时后,PFA显著增加了CDW的UCS,在6%的PFA含量下,价值上升至737.18kPa.
- 切削强度的增强比UCS的改善更明显;凝聚力在6%的PFA下从5.29增加到868.96kPa.
- SEM发现PFA有效地凝固颗粒,填补空隙,并形成凝聚性聚合物,改善内部结构.
结论:
- 酸是一种可行的增强剂,可以改善CDW的机械性能.
- 经过PFA修改的CDW表现出增强的压力和剪切强度,适合土木工程.
- 本研究提出了一种新且有前途的CDW回收方法,促进可持续建筑实践.
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