处理方法对回收混凝土聚合物的性能的影响:全面审查
Dulshi Peiris1, Chamila Gunasekara2, David W Law1
1Civil and Infrastructure Engineering, RMIT University, Melbourne, Australia.
概括
处理提高了建筑和拆除废弃物 (CDW) 的回收聚合物 (RA),改善了混凝土的性能. 本综述分析了去除或加强附着砂的方法,使回收混凝土适用于结构应用,并促进循环经济原则.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 土木工程 土木工程是指土木工程.
背景情况:
- 建筑和拆除废弃物 (CDW) 是一个重大的全球环境挑战.
- 混凝土的低可回收性主要是由于回收聚合物 (RA) 的局限性,特别是附着的多孔砂层.
- 这种砂层导致水的吸收增加,密度降低,机械性能差,阻碍RA在结构混凝土中的使用.
研究的目的:
- 对回收聚合物 (RA) 的创新处理方法进行全面审查.
- 批判性地分析这些处理对RA和混凝土的物理,机械和耐久性质的影响.
- 确定有效的方法来提高RA质量,并扩大其在结构混凝土中的应用.
主要方法:
- 系统的文献综述综合了150多项研究的发现.
- 对处理方法的分析集中在去除或加强RA的附着砂层.
- 评估处理对RA密度,吸水能力,机械强度和耐用性质的影响.
主要成果:
- 有效的砂清除方法包括球磨和自生清洁.
- 成功的砂强化技术包括碳化,聚合物浸和纳米处理.
- 经过处理的RA显著提高了密度,强度和化物耐受性,提高了混凝土的性能.
结论:
- 创新的处理方法可以克服回收聚合物的局限性,使它们适合结构应用.
- 建议包括缩放处理,整合耐用性测试和对经济和环境可行性的生命周期评估.
- 该研究强调了经过处理的RA的潜力,以推进循环经济原则和促进可持续建筑.
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