摘要
根据沥青路面建设实地调查,将沥青路面施工划分为集料堆料、集料干燥、沥青加热、沥青混合料拌和、运输、摊铺和压实7个环节;通过高速公路沥青路面施工碳源调查,得到了施工各环节能源消耗清单;基于能源消耗清单,采用热值法提出了高速公路沥青路面碳排放量计算方法;根据高速公路沥青混合料能耗与碳排放现状调查,结合碳排放量计算方法,运用最大离差法计算了高速公路沥青路面建设各环节权重系数,提出碳排放关键环节,并建立了碳排放量评价模型,对碳排放进行分级评价;根据碳排放评价现状提出了以改变能源结构、改进加热方式、加强施工管理为主的低碳技术,以降低高速公路沥青路面建设中的碳排放量。研究结果表明:集料干燥、沥青加热环节的权重系数分别为0.517和0.320,占总权重的0.8以上,定义为沥青路面施工碳排放关键环节;根据所提出的碳排放评价指标EGI,将碳排放评价划分为优、良、一般、差4个等级;在关键环节低碳技术研究中,沥青加热环节将煤改换成天然气能够减少碳排放44.68%,集料干燥中将重油改换成天然气能够降低26.89%碳排放,减排效果显著。沥青路面施工碳排放评价分级和低碳技术研究为中国高速公路建设碳排放等级评定及可持续发展提供了技术可行、经济合理的减排措施。
Based on the field survey of asphalt pavement construction, the asphalt pavement construction was divided into seven parts-aggregate, aggregate heating, asphalt heating, asphalt mixture blending, transportation, paving and compaction etc. Then a mathematical formula was developed to describe the carbon emissions of highway asphalt pavement. According to energy consumption and carbon emissions survey, weighting coefficients of various aspects were calculated by the method of maximum deviation, and then the key links were proposed. The carbon emission evaluation model was established, and the quantitative classification was applied to evaluate the present situation of carbon emission in asphalt pavement. On the basis of thecarbon emissions evaluation, the low-carbon technologies were proposed to change the energy structure, improve heating mode, and strengthen construction management. The results show that the weighting coefficients of the aggregate drying and asphalt heating, which are defined as the key links, are 0. 517 and 0. 320 respectively, and account for more than 0.8 of the total weight. Based on the proposed index （EGI）, the carbon emission evaluation is divided into excellent, good, general and poor levels. According to the key links and low-carbon technology research, the carbon emission can reduce 44.68% if the energy in asphalt heating changes from coal into natural gas, and it can reduce 26. 89% if the energy in aggregate drying switches from heavy oil to natural gas. The research on carbon emission evaluation classification and low-carbon technology of asphalt pavement construction has provided the technical feasible, economical and reasonable emission reduction measures for the construction of carbon emission grade evaluation and sustainable development of Chinese expressway.
作者
彭波
蔡春丽
胡如安
PENG Bo CAI Chun-li HU Ru-an(School of Highway, Chang＇an University, Xi＇an 710064, Shaanxi, China Zhengzhou Hualuxing Highway Technology Co. Ltd. , Zhengzhou 450016, Henan, China Traffic Science Research Institute of Yunnan Province, Kunming 650000, Yunnan, China)
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2016年第5期8-15,共8页
Journal of Chang’an University(Natural Science Edition)
基金
甘肃省交通运输厅科技计划项目(201227)
陕西省自然科学基金项目(2011JM7001)
陕西省交通运输厅科技计划项目(15-08K)
三门峡市科技发展计划项目(2014050406)
关键词
道路工程
高速公路沥青路面
碳排放
最大离差法
权重系数
碳排放分级
road engineering
expressway asphalt pavement
carbon emission
maximum devia-tion method
weight coefficient
carbon emission evaluation
作者简介
彭波（1970-），男，陕西西安人，教授，工学博士，E-mail：pengb8888@126．com.
