废弃物衍生青混合物的性能知情生命周期评估,用于完全替换聚合物
Zhihan Zhang1, Wei Huang2, Jia Sun1
1School of Transportation, Southeast University, Nanjing, Jiangsu, PR China.
Journal of environmental management
|March 12, 2026
概括
在青混合物中使用钢和再生青路面 (RAP) 作为完全聚合物的替代品,可以显著减少环境影响. 这种可持续的方法减少了全球变暖潜力和酸化,为循环经济在基础设施中的生命周期带来了巨大的好处.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 越来越多地依赖青路面的原始聚合物,使自然资源受到压力.
- 工业副产品,如钢和再生青路面 (RAP),为道路建设中的循环经济战略提供了潜力.
- 评估这些回收材料的完全可持续性需要综合性能和生命周期评估.
研究的目的:
- 通过使用钢渣和RAP进行青混合物的综合可持续性评估,以完全更换料.
- 将实验室性能表征与基于性能的生命周期评估 (LCA) 结合起来,进行全面的分析.
- 评估这些新型青混合物的长期可行性和环境安全性.
主要方法:
- 青混合物的实验室性能测试,包括耐用性和环境安全评估 (浸泡调节,微量元素浸出).
- 生命周期评估 (LCA) 量化了七个影响类别和一个货币化的生态成本指标.
- 基于性能的使用寿命参数化与LCA集成,用于与传统混合物进行30年比较.
主要成果:
- 一种高功能的环氧渣-RAP混合物被确定为一个可行的完全替代选择.
- 与传统混合物相比,完全替换选项显示全球变暖潜力减少了38.8%,酸化减少了37.9%.
- 总生态成本下降了37.7%,观察到优化和毒性指标的权衡.
结论:
- 将天然聚合物完全替换为废弃物制成的材料,如钢和青路面中的RAP,可以为青路面带来巨大的净生命周期益处.
- 结合性能和LCA的综合框架为评估基于回收的路面策略提供了一个强大的方法.
- 这种方法可应用于其他基础设施应用,促进循环,减少环境负担.
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