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道路融雪除冰技术生命周期内环境负荷分析

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目前广泛采用的融雪除冰方法会对路面和环境产生一定的破坏.为了研究沥青路面融雪除冰技术在其生命周期内对环境的影响作用,以蓄盐路面、电缆加热路面、机械除冰雪3种不同融雪除冰技术为研究对象,基于生命周期分析(LCA)方法,将3种不同融雪除冰技术分为原料开采、拌和、运输、摊铺压实、除冰雪5个过程,量化分析3种不同融雪除冰技术生命周期内环境排放的影响.取全球变暖潜值(GWP)、酸化潜值(AP)、光化学臭氧形成潜值(POCP)、人体毒性潜值(HTP)4种环境影响类别来评价生命周期内融雪除冰技术的环境负荷.研究结果表明:在融雪除冰技术的各个阶段中,CO2的排放均是最多;在整个生命周期内,3种融雪除冰技术产生的环境负荷的排序均为GWP>HTP>AP>POCP;在4种影响类别中,不同融雪除冰技术中GWP占比均在74%以上.为了使不同融雪除冰技术的环境负荷进行比较,对不同融雪除冰技术的分析结果进行归一化处理,得出电缆加热路面产生的环境负荷最大,蓄盐路面产生的环境负荷最小.
Analysis of the Environmental Load During the Life Cycle of Road Snow-melting and Deicing Technology
Currently,the widely used snow-melting and deicing methods cause damage to road surfaces and the environment.To study the impact of asphalt-pavement snow-melting and deicing technology on the environment during its life cycle,three different snow-melting and deicing technologies were investigated:pavement containing salt,cable-heated pavement,and mechanical ice removal.Based on the life-cycle assessment method,the three snow-melting and deicing technologies were divided into five processes:raw-material mining,mixing,transportation,paving compaction,and snow removal.The impact of environmental emissions over the life cycle of the three snow-melting and de-icing technologies was quantified.Four environmental impacts-global-warming potential(GWP),acidification potential(AP),photochemical ozone creation potential(POCP),and human toxicity potential(HTP)-were considered to evaluate the environmental load of snow-melting and deicing technology.The results show that CO2 emissions are the largest in all stages of snow melting and deicing.The environmental loads of the three snow-melting and de-icing technologies are ranked throughout the life cycle:GWP>HTP>AP>POCP.Of the four impact categories,GWP accounts for more than 74%of the environmental load of the different snow-melting and de-icing technologies.To compare the environmental loads of different snow-melting and deicing technologies,their analysis results were normalized.It is concluded that the environmental load generated by the cable-heated pavement is the largest,while that generated by the pavement containing salt is the smallest.

pavement engineeringasphalt pavementlife cycle assessmentenvironmental loadsnow melting and deicing

郭猛、蔡晓晓、王京京、杜修力

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北京工业大学桥梁工程安全与韧性全国重点实验室,北京 100124

北京工业大学城市与工程安全减灾教育部重点实验室,北京 100124

路面工程 沥青路面 生命周期评价 环境负荷 融雪除冰

国家重点研发计划项目国家自然科学基金项目国家自然科学基金项目

2022YFE01373005247842952078018

2024

中国公路学报
中国公路学会

中国公路学报

CSTPCD北大核心
影响因子:1.607
ISSN:1001-7372
年,卷(期):2024.37(9)