With the increasing severity of global warming, “low-carbon” development is being vigorously promoted. As the largest energy consumer in the transportation industry, road transportation must focus on energy saving and emission reduction. The traditional life cycle assessment (LCA) method conducts pavement environmental impact assessments with limited consideration of dynamic aspects in the time dimension. This study explores certain time-varying factors (traffic volume, vehicle type, pavement roughness, maintenance timing, material recycling rate, electricity mix, and characterization factors) and systematically establishes a dynamic LCA model for asphalt pavements. The proposed model is validated by a case study on an expressway and results show that global warming impact of asphalt pavements is overestimated if dynamic aspects are not considered. Furthermore, preventive maintenance demonstrates higher environmental benefits than regular maintenance. This study provides an operable dynamic assessment model for global warming impact assessment of asphalt pavements.

随着全球变暖的日益严重，“低碳”发展正在大力推进。道路交通作为交通运输行业中最大的能源消耗大户，必须着力节能减排。传统的生命周期评价（LCA）方法进行路面环境影响评价，在时间维度上对动态方面的考虑有限。本研究探讨了某些时变因素（交通量、车辆类型、路面粗糙度、维护时间、材料回收率、电力组合和特征因素），并系统地建立了沥青路面的动态 LCA 模型。所提出的模型通过高速公路案例研究得到验证，结果表明，如果不考虑动态方面，沥青路​​面对全球变暖的影响被高估了。此外，预防性维护比定期维护具有更高的环境效益。该研究为沥青路面全球变暖影响评估提供了可操作的动态评估模型。