1. 采用乳化沥青粘合剂（CCPREA）对路面进行冷再生较使用泡沫沥青粘合剂（CCPRFA）具有更大的环境影响。

　　1. Using emulsified asphalt binder (CCPREA) for cold recycling of pavement has greater environmental impact than using foam asphalt binder (CCPRFA).

　　2. CCPREA的总生产成本比CCPRFA高出37.4%。

　　2. The total production cost of CCPREA is 37.4% higher than that of CCPRFA.

　　3. CCPREA在劈裂抗拉强度、马歇尔稳定度保持率和疲劳寿命三项关键指标上均优于CCPRFA。

　　CCPREA outperforms CCPRFA in three key indicators: splitting tensile strength, Marshall stability retention, and fatigue life.

　　4. 在整体可持续性评估中，CCPREA 的得分为 0.52，略高于CCPRFA 的 0.48 分。

　　In the overall sustainability assessment, CCPREA scored 0.52, slightly higher than CCPRFA's 0.48.

　　沥青路面因其行驶平顺性好、轮胎-路面噪声低、施工周期短等优势，在全球范围内广泛应用。然而，老化沥青路面的养护与修复会产生大量铣刨料，若采用传统露天堆放或填埋处置方法，不仅污染环境，还会阻碍沥青等资源的回收利用。厂拌冷再生技术（CCPR）能有效延长道路寿命15~20年，主要包括乳化沥青冷再生（CCPREA）和泡沫沥青冷再生（CCPRFA）两种技术路径。现有研究虽已通过生命周期评估（LCA）分析了CCPR的环境影响，但针对CCPREA与CCPRFA在环境、经济及性能三方面的综合对比仍显不足。为此，本研究构建了一套可持续性评估框架，通过系统比较两种技术路径，为未来基础设施项目的技术选型提供科学依据。

　　Asphalt pavement is widely used worldwide due to its advantages such as good driving smoothness, low tire road noise, and short construction period. However, the maintenance and repair of aging asphalt pavement will generate a large amount of milling materials. If traditional open-air stacking or landfill disposal methods are used, it will not only pollute the environment, but also hinder the recycling and utilization of asphalt and other resources. The plant mix cold recycling technology (CCPR) can effectively extend the road life to 15~20 years, mainly including two technical paths of emulsified asphalt cold recycling (CCPREA) and foam asphalt cold recycling (CCPRFA). Although existing research has analyzed the environmental impact of CCPR through life cycle assessment (LCA), there is still a lack of comprehensive comparison between CCPREA and CCPRFA in terms of environment, economy, and performance. To this end, this study has developed a sustainability assessment framework that provides a scientific basis for the technology selection of future infrastructure projects by systematically comparing two technological paths.

　　沥青路面冷再生技术主要采用乳化沥青粘合剂（CCPREA）和泡沫沥青粘合剂（CCPRFA）两种材料并添加水泥对路面进行再生。这类技术因其显著的效益和资源节约优势而广受青睐。尽管优势明显，建立一套系统化的评估体系仍十分必要。本研究构建了一个融合层次分析法（AHP）、熵权法（EWM）和逼近理想解排序法（TOPSIS）的综合评估模型，从环境、经济和工程技术三个维度对这两种工艺的可持续性进行了评价。生命周期评估（LCA）结果表明，CCPREA 在温室气体排放、能源消耗和经济成本方面均高于 CCPRFA，但在综合性能表现上，CCPREA更具优势。多准则评估结果显示，AHP-EWM-TOPSIS模型对CCPREA的评分为0.62，显著高于CCPRFA的0.38。

　　Cold recycling technology of asphalt pavement mainly uses two materials, emulsified asphalt binder (CCPREA) and foam asphalt binder (CCPRFA), and adds cement to regenerate the pavement. This type of technology is widely favored due to its significant environmental benefits and resource conservation advantages. Despite the obvious advantages, it is still necessary to establish a systematic evaluation system. This study constructed a comprehensive evaluation model that integrates Analytic Hierarchy Process (AHP), Entropy Weight Method (EWM), and TOPSIS method to comprehensively evaluate the sustainability of these two processes from three dimensions: environment, economy, and engineering technology. The results of life cycle assessment (LCA) indicate that CCPREA is higher than CCPRFA in terms of greenhouse gas emissions, energy consumption, and economic costs, but in terms of overall performance, CCPREA has more advantages. The multi criteria evaluation results showed that the AHP-EWM-TOPSIS model scored 0.62 for CCPREA, significantly higher than CCPRFA's 0.38.

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