用回收陶粉进行水泥砂耐久性评估
Anna Tokareva1, Danièle Waldmann2
1Department of Engineering, Faculty of Science, Technology and Medicine, University of Luxembourg, L-4365 Esch-sur-Alzette, Luxembourg.
Materials (Basel, Switzerland)
|September 27, 2025
概括
这项研究表明,添加陶粉末,包括回收拆除废物,显著提高了对冷解周期,高温和硫酸的砂耐用性. 陶废物增强了水泥材料,为建筑提供了可持续的解决方案.
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.
- 可持续建筑 可持续建筑
背景情况:
- 关于含有陶粉的水泥材料的耐用性存在有限的数据.
- 陶粉显示出作为波佐拉尼克补充水泥材料的潜力.
- 回收的陶拆除废物可以用于先进的水泥配方.
研究的目的:
- 评估陶粉对砂耐用性的影响.
- 为了评估对冷解,高温和硫酸暴露的抗性.
- 调查回收陶废物的使用在石灰石烧焦粘土 (LC3) 混合物中.
主要方法:
- 用不同数量的陶粉和LC3配方制备了砂样本.
- 耐久性通过冷解周期,高温暴露 (200°C,500°C,900°C) 和1%的硫酸浸泡进行了测试.
- 在所有测试条件下测量了机械强度保留.
主要成果:
- 修改后的砂显示出更好的结解能力 (1.91%-2.61%的强度损失与参考的6.31%相比).
- 观察到提高了高温性能,在200°C时强度增长高达13.9%,在含陶的混合物中,在500°C和900°C时损耗减少.
- 硫酸抗性显著改善,将强度损耗从9.37% (参考) 降低到1.38% (用陶粉的LC3).
结论:
- 加入陶粉末,特别是回收拆除废物,提高了水泥材料的耐用性.
- 陶废物为改善混凝土和砂在恶劣环境中的性能提供了一个可持续的替代方案.
- 这些发现支持使用陶废料在耐用建筑应用的LC3配方中.
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