含有钢渣的活性化材料的性能,微结构发展和生命周期评估,在不同的等价下进行
Xin Ji1, Xiaofeng Wang2, Xin Zhao3
1School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China.
Materials (Basel, Switzerland)
|January 11, 2024
概括
这项研究开发了使用钢用于可持续建筑的活性材料 (AAM). 该研究优化了AAM以提高机械强度和减少环境影响,促进固体废物利用.
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:
- 固体废物管理和环境可持续性是建筑业的关键挑战.
- 活性材料 (AAMs) 为传统水泥提供了一个有希望的替代品,利用工业副产品.
- 钢渣 (SS) 是一个大量的工业废物,有可能用于材料.
研究的目的:
- 调查钢 (SS) 含量和活性剂度对AAMs特性的影响.
- 评估基于SS的AAM的可操作性,机械强度和环境指标.
- 阐明已开发的AAMs的反应机制和微观结构演变.
主要方法:
- 制备具有不同SS含量 (10-50%) 和等效 (4.0-8.0%) 的AAM.
- 评估糊的流动性,定时间和压力强度.
- 使用扫描电子显微镜 (SEM),X射线衍射 (XRD) 和核磁共振 (NMR) 的表征.
- 用于环境影响评估的生命周期评估 (全球变暖,非生物资源枯竭,酸化,轻化).
主要成果:
- 增加的SS含量提高了糊的流动性和定时间.
- 最佳压力强度在8.0%等效下实现,SS通过微聚合物填充减轻裂纹.
- 与水泥相比,基于SS的AAM显著减少了环境影响:全球变暖为76.7%,非生物资源枯竭为53.0%,酸化为51.6%,轻化为48.9%.
结论:
- 钢渣可以有效地用于活性材料,以改善机械性能和减少环境足迹.
- 基于SS的优化AAM为建筑工程中传统水泥提供了一个可持续的替代方案.
- 这项研究有助于提高固体废物资源利用率和开发环保建筑材料.
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