自然混凝土和回收混凝土混凝土的生命周期比较评估:一个审查
Araz Hasheminezhad1, Daniel King2, Halil Ceylan1
1Department of Civil, Construction and Environmental Engineering, Program for Sustainable Pavement Engineering and Research (PROSPER), Institute for Transportation, Iowa State University, Ames, IA 50011-1066, USA.
The Science of the total environment
|August 9, 2024
概括
回收聚合混凝土 (RAC) 与天然聚合混凝土 (NAC) 相比,提供了更多的环境效益,但其影响在很大程度上取决于运输和研究的进行方式. 强度可靠性是RAC的关键.
科学领域:
- 可持续建筑材料 可持续建筑材料
- 环境影响评估环境影响评估
- 土木工程和材料科学 材料科学
背景情况:
- 回收聚合混凝土 (RAC) 使用建筑和拆除废物 (CDW),为天然聚合混凝土 (NAC) 提供可持续的替代品.
- 与NAC相比,对RAC的环境可持续性的全面了解是有限的.
- 现有的研究缺乏对比生命周期评估 (LCA) 研究的综合分析.
研究的目的:
- 进行RAC和NAC之间的比较LCA研究的彻底审查和分析.
- 评估和综合两种混凝土类型在整个生命周期中的环境影响.
- 确定影响环境比较的关键因素,并讨论挑战和未来方向.
主要方法:
- 系统的文献审查和对比生命周期评估 (LCA) 研究的分析.
- 评估环境影响,包括能源消耗,温室气体排放和资源耗尽.
- 综合了与运输,功能单位和材料特性相关的发现.
主要成果:
- RAC与NAC的环境影响受到运输距离和运输方式的重大影响.
- 在LCA中选择的功能单位对比较结果产生了重大影响.
- 强度可靠性成为一个关键因素,解决具体属性的变化和现实世界的适用性.
结论:
- RAC提供了一个可行的可持续替代方案,但它的环境效益取决于环境.
- 标准化的LCA方法和考虑强度可靠性对于准确的比较至关重要.
- 进一步的研究和行业实践应专注于优化RAC的物流和质量控制.
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