城市固体废物焚烧底灰在混凝土中:一个系统的审查和元分析
1School of Civil Engineering, Vellore Institute of Technology-Chennai Campus, Chennai, India.
Scientific reports
|November 14, 2025
概括
城市固体废物焚烧底灰 (MSWIBA) 可以取代高达20%的混凝土聚合物,提供环境效益,如减少二氧化碳排放. 然而,更高的替换水平可能会降低混凝土的强度和耐用性.
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:
- 城市固体废物焚烧底层灰 (MSWIBA) 是废物转化能源设施的副产品.
- 在混凝土中,MSWIBA显示出作为可持续聚合物的替代品和补充性水泥材料 (SCM) 的潜力.
研究的目的:
- 系统地审查和元分析在混凝土中使用MSWIBA的机械,耐用性和环境影响.
- 评估MSWIBA作为可持续建筑材料的适用性.
主要方法:
- 按照PRISMA 2020指南进行系统的文献审查.
- 38项研究 (2000-2025) 的元分析,包括312个实验组.
- 分析机械性能 (压力,拉力,屈曲强度) 和耐久性指标 (化物透,解耐力).
主要成果:
- 最多20%的MSWIBA替换适度降低了压力,拉力和曲强度.
- 由于数据有限,耐用性结果 (透率,抗解) 是混合的.
- 使用MSWIBA可降低填埋场的负担,节约天然聚合物,并将CO2排放量降低100公斤/混凝土.
结论:
- MSWIBA 是一种可行的可持续材料,可以用高达20%的替代性来代替混凝土.
- 挑战包括组成的变化,潜在的重金属漏,以及更高的替换率下性能退化.
- 需要进一步的研究来解决耐用性问题,并优化MSWIBA在混凝土中的利用.
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