A Comparative Life Cycle Assessment (LCA) of Warm Mix Asphalt (WMA) and Hot Mix Asphalt (HMA) Pavement: A Case Study in China
A Comparative Life Cycle Assessment (LCA) of Warm Mix Asphalt (WMA) and Hot Mix Asphalt (HMA) Pavement: A Case Study in China
复制标题
温拌沥青 (WMA) 和热拌沥青 (HMA) 路面的比较生命周期评估 (LCA)：中国案例研究
DOI：
10.1155/2019/9391857
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发表时间：
2019-09-09
影响因子：
1.8
通讯作者：
Wu, Shuang
中科院分区：
文献类型：
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作者：
Ma, Hui;Zhang, Zhigang;Wu, Shuang
一般来说，温拌沥青（WMA）技术与热拌沥青（HMA）相比，可以有效降低混合和铺装温度，被认为更环保。本研究采用生命周期评价（LCA）方法，对WMA和HMA路面的环境影响和资源消耗进行对比分析。建立了路面LCA模型；同时，收集并分析了WMA和HMA路面的相关生命周期清单（LCI）。评估了5个案例的中点影响类别，包括全球变暖潜势（GWP）、中国非生物耗竭潜势（CADP）和颗粒物形成（PMF）。评价结果表明，WMA路面与HMA路面全寿命期内的资源消耗几乎处于同一水平，除了WMA路面的长期性能远逊于HMA路面外，WMA路面在温室气体和PM2.5排放方面的环境影响显著小于HMA路面。综上所述，虽然WMA路面与HMA路面的资源消耗水平相同，但两者的环境友好性更强。
Generally, the warm mix asphalt (WMA) technology can reduce the mixing and paving temperature effectively as compared with that of hot mix asphalt (HMA), which is considered more environment-friendly. In this study, the environmental impacts and resource consumptions of WMA and HMA pavements were analyzed comparatively using the life cycle assessment (LCA) method. A LCA model of pavement was built; meanwhile, the relevant life cycle inventory (LCI) of WMA and HMA pavements was also collected and analyzed. The midpoint impact categories including Global Warming Potential (GWP), Chinese Abiotic Depletion Potential (CADP), and Particulate Matter Formation (PMF) were assessed for five cases. The assessment results showed that the resource consumptions of both WMA and HMA pavements in entire life were almost at the same level, while the environmental impacts of WMA pavement related to greenhouse gases and PM2.5 emissions were significantly less than that of HMA pavement, except for the case where the long-term performance of WMA pavement is much worse than that of HMA pavement. In final, it could be concluded that WMA pavement is more environment-friendly compared with HMA pavement although they have the same-level resource consumptions.