使用工业废弃物衍生材料的可持续砂的设计和表征
Mihaela Caftanachi1, Mihai Vrabie1, Maria Harja2
1Faculty of Chemical Engineering and Environmental Protection, Gheorghe Asachi Technical University of Iasi, 73 Mangeron Boulevard, Iasi, Romania.
Scientific reports
|March 4, 2026
概括
使用飞灰和渣的活性材料为波特兰水泥提供了一个可持续的替代方案. 这些环保砂显著减少废物和二氧化碳排放,显示出有希望的机械性能.
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.
- 环境科学 环境科学
背景情况:
- 越来越多的环境问题需要替代波特兰水泥.
- 活性酸材料提供了一个可持续的解决方案.
- 工业副产品,如飞灰和渣,可以被利用.
研究的目的:
- 用不同的飞灰来源和高炉渣渣来研究活性砂的机械性能.
- 评估这些材料作为波特兰水泥替代品的潜力.
- 评估环境效益,包括减少废物和减轻二氧化碳排放.
主要方法:
- 制备三种砂混合物,其中包含不同类别的F级飞灰 (罗马尼亚/加拿大) 和高炉渣组成.
- 使用氧化和酸盐溶液进行激活.
- 机械测试 (压力和屈曲强度) 在28天.
- 使用扫描电子显微镜 (SEM) 和X射线衍射 (XRD) 的微结构分析.
主要成果:
- 混合物3 (加拿大飞灰和废渣) 实现了最高的压力强度 (43.8 MPa) 和屈曲强度 (7.4 MPa).
- 混合物2 (飞灰加拿大) 的压力强度为26.0 MPa,而混合物1 (飞灰罗马尼亚) 的压力强度为8.3 MPa.
- 添加高炉渣几乎使压力强度翻了一番,与单独的飞相比.
- SEM和XRD分析证实了与机械强度相关的反应产物形成.
结论:
- 使用飞灰和高炉废渣的活性砂是波特兰水泥的有效替代品.
- 这些材料有助于减少废物和减少30%的二氧化碳排放.
- 开发的混合物表现出有希望的机械性能和可持续建筑的环境效益.
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