Abstract: In order to accurately evaluate the environmental benefits of warm mix regeneration integration technology, the boundary range of environmental benefits during road construction was determined based on the life cycle method. The carbon emission calculation model was established. Through on-site investigation and data analysis, the energy consumption and greenhouse gas emissions of warm mix regeneration technology and hot mix technology were calculated respectively by the proposed model. The energy saving and emission reduction benefits of warm mix regeneration fusion technology were compared. The result show that during the construction process of warm mix recycled pavement, the energy consumption of raw material production is 324.47 MJ, and its greenhouse gas emissions are 19.65 kg CO2e; the energy consumption of mixture mixing is 217.28 MJ, and its greenhouse gas emissions are 18.15 kg CO2e. Compared with hot mix technology, warm mix regeneration fusion technology reduces energy consumption and greenhouse gas emissions during the mixing stage of the mixture. When the RAP content is 40%, the energy consumption of warm mix regeneration pavement during the construction period is reduced by 33.33%, and CO2 emissions are reduced by 20.11%.

Key words: highway engineering; life cycle analysis method; warm mix technology; energy saving and emission reduction; greenhouse gases

摘要： 为了准确评估温拌再生融合技术的环境效益，基于生命周期法确定路面建设期间环境效益的边界范围，建立碳排放计算模型。通过现场调查及数据分析，运用模型分别计算温拌再生技术与热拌技术的能耗及温室气体排放。最终对比分析了温拌再生融合技术的节能减排效益。结果表明：温拌再生路面施工过程中，原材料生产能耗324.47 MJ，温室气体排放为19.65 kg CO2e，混合料拌和能耗为217.28 MJ，温室气体排放为18.15 kg CO2e。与热拌技术相比，温拌再生融合技术在混合料拌和阶段能耗和温室气体排放都有减少，RAP掺量为40%时，温拌再生路面建设期能耗节约33.33%，CO2排放降低20.11%。

关键词: 道路工程；生命周期分析法；温拌再生融合技术；节能减排；温室气体