泡沫沥青冷再生混合料性能及工程应用研究

Study on the Performance and Field Application of Foamed Asphalt Cold Recycled Mixtures

摘要: 为实现旧沥青路面材料高效循环利用，解决传统路面再生技术能耗高、污染大、施工成本高的问题，有必要对泡沫沥青冷再生技术展开研究。通过室内试验优化沥青发泡工艺参数与混合料配合比，分析各组分对混合料路用性能的影响规律，明确最佳材料配比；并结合实际道路养护工程，阐述泡沫沥青冷再生施工关键工艺，验证其工程适用性与经济环保效益。研究结果表明，优化后的泡沫沥青冷再生混合料各项路用性能均满足规范要求，旧料利用率可达85%以上，可有效降低路面养护成本、减少碳排放，为旧沥青路面再生养护工程提供技术参考。

Abstract: To achieve efficient recycling and utilization of reclaimed asphalt pavement (RAP) materials and address the high energy consumption, severe environmental impacts, and high construction costs associated with conventional pavement recycling technologies, this study conducts a systematic investigation into foamed asphalt cold recycling technology. Laboratory tests were performed to optimize the asphalt foaming process parameters and mixture design, and the effects of different material components on the pavement performance of the recycled mixtures were analyzed to determine the optimal material composition. Furthermore, based on an actual pavement maintenance project, the key construction procedures of foamed asphalt cold recycling were introduced, and its engineering applicability as well as economic and environmental benefits were evaluated. The results demonstrate that the optimized foamed asphalt cold recycled mixture satisfies the specification requirements for all pavement performance indicators. The utilization rate of reclaimed asphalt materials exceeds 85%, effectively reducing pavement maintenance costs and carbon emissions. This study provides a technical reference for the application of foamed asphalt cold recycling technology in the rehabilitation and sustainable maintenance of reclaimed asphalt pavements.