基于LCA的建筑垃圾再生填料回填路基的碳减排效益分析  

Carbon Reduction Benefits of LCA-based Recycled Construction Waste Fill Backfill Roadbed

作　　者：翟兵勇 田佳学 ZHAI Bing-yong;TIAN Jia-xue(North China University of Water Resources and Electric Power,Zhengzhou 450046,China;The 3rd Engineering Co.,Ltd.of China Railway 17th Bureau Group,Shijiazhuang 050000,China)

机构地区：[1]华北水利水电大学,郑州450046 [2]中铁十七局集团第三工程有限公司,石家庄050000

出　　处：《价值工程》2023年第15期65-67,共3页Value Engineering

摘　　要：文章通过测算再生填料替代天然材料回填路基的碳排放情况,评估了中国郑州市某10万t建筑垃圾资源化项目的潜在环境影响.采用生命周期评价方法(LCA)测算不同材料进行路基回填的碳排放情况,并与建筑垃圾直接填埋的环境影响进行对比,同时分析了施工过程中每个阶段的碳排放贡献.结果表明,建筑垃圾直接填埋产生的碳排放量是资源化利用的2.3倍,平均每资源化利用1t建筑垃圾可减少约10.5836kgCO_(2)e的温室气体排放,该资源化项目预计能减少1132tCO_(2)e的温室气体排放.The article assesses the potential environmental impact of a 100,000t construction waste resourceisation project in Zhengzhou,China,by measuring the carbon emissions of recycled fill backfilling the roadbed in place of natural materials.The Life Cycle Assessment(LCA)method was used to measure the carbon emissions of different materials for road base backfilling and to compare the environmental impact with that of direct landfill of construction waste,and to analyze the contribution of carbon emissions at each stage of the construction process.The results show that the carbon emissions from direct landfill of construction waste are 2.3 times higher than those from resource utilisation,with an average reduction of approximately 10.5836kgCO_(2)e of greenhouse gas emissions per 1t of construction waste utilised for resource utilisation,and the resource utilisation project is expected to reduce greenhouse gas emissions by 1,132tCO_(2)e.

关 键 词：建筑垃圾 再生填料 碳减排 生命周期评价 资源化 

分 类 号：X799.1[环境科学与工程—环境工程]