超高性能混凝土的性能研究,包括城市固体废物焚烧和灰
Fengli Liu1, Yize He1, Junhua Liu2
1School of Civil Engineering and Architecture, Henan University, Kaifeng 475004, China.
Materials (Basel, Switzerland)
|October 16, 2025
概括
将危险的城市固体废物焚烧飞灰 (MSWIFA) 回收成超高性能混凝土 (UHPC) 提供了一个可持续的解决方案. 用MSWIFA取代12%的水泥可以获得相似的强度和更好的生态经济效益.
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:
- 城市固体废物 (MSW) 生产是一个日益严重的环境问题.
- 燃烧MSW会产生危险的飞灰 (MSWIFA),这给处置带来了挑战.
- MSWIFA的特性表明,它有可能用于建筑材料.
研究的目的:
- 研究将MSWIFA纳入超高性能混凝土 (UHPC) 的可行性.
- 评估MSWIFA替代率对UHPC性能和性能的影响.
- 评估MSWIFA修改的HHPC的生态经济效益和重金属固化能力.
主要方法:
- 在UHPC中,MSWIFA被用于取代6%,12%,18%和24%的水泥材料.
- 分析了可加工性,机械性能,微观结构和耐久性.
- 量化评估了重金属漏和生态经济效益.
主要成果:
- 一个12%的MSWIFA替代品优化了UHPC水分,减少了流动性,增加了湿包装密度.
- 28天的压力强度达到134.63MPa,与对照组相比.
- 流动性,耐用性和重金属洗达到标准,大大降低了能源消耗,碳排放和成本.
结论:
- MSWIFA可以有效地回收到超高压电池中,将危险废物转化为有价值的建筑材料.
- 该研究证明了可持续的危险废物管理和污染减轻的可行方法.
- 使用12%MSWIFA的UHPC提供了可比的机械性能,并具有显著的环境和经济优势.
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