从惰性废物混合物中开发可持续的建筑材料,使用机械合成过程
Rabah Hamzaoui1,2, Othmane Bouchenafa3, Rachida Idir4
1Institut de Recherche, ESTP/Université Paris-Est, 28 Avenue du Président Wilson, 94234 Cachan, France.
Materials (Basel, Switzerland)
|September 14, 2024
概括
机械合成将建筑垃圾如回收混凝土和玻璃转化为可持续的建筑材料. 这一过程显著提高了材料的强度,为传统水泥提供了一个环保的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续工程 可持续工程
- 废弃物价值化 废弃物价值化 废弃物价值化
背景情况:
- 建筑和拆除废物 (CDW) 带来了重大的环境挑战.
- 传统的水泥生产对全球二氧化碳排放做出了重大贡献.
- 从废物中开发可持续的建筑材料对于环境保护至关重要.
研究的目的:
- 研究机械合成在将惰性废物流转化为可行的建筑材料方面的有效性.
- 使用回收混凝土,回收玻璃和挖掘土壤开发和描述新型水泥材料.
- 评估这些废弃物衍生材料的机械性能和作为水泥替代品的潜力.
主要方法:
- 利用机械合成来处理回收混凝土,回收玻璃和挖掘土壤.
- 制定了两种不同的材料成分 (F1和F2) 用于生产水泥糊.
- 部分替代普通波特兰水泥 (CEM I) 使用 50% 的开发废弃物配方.
- 使用X射线衍射 (XRD) 和ATR-FTIR进行了材料表征.
- 进行机械测试以确定各种固化年龄和磨条件下的压力强度.
主要成果:
- 与未磨的对应物相比,磨的废料显著提高了水泥糊的压力强度.
- 在28天的压力强度达到49.7MPa,在90天的压力强度达到61MPa,在优化削参数的情况下.
- 与参考CEM II和CEM III水泥糊相比,F1配方显示出更高的压力强度.
- 机械合成有效地提高了废弃建筑材料的性能.
结论:
- 机械合成是一种高效的技术,用于将建筑和拆除废物利用成高性能可持续材料.
- 开发的废物配方有望作为传统水泥的部分替代品,减少二氧化碳排放量.
- 这项研究有助于开发环保的建筑材料,并促进建筑行业的循环经济.
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