沥青路面施工期温室气体排放量化方法及减排对策研究

Study of quantitative methods for emission of greenhouse gases during construction period of asphalt pavement and emission reduction countermeasures

通过对我国多个省份的10条高速公路沥青路面进行碳源调查与分析并结合IPCC与《中国能源统计年鉴2016》提供的温室气体计算参数,建立了适用于不同能源类型的沥青路面施工期温室气体排放的量化模型,得出了施工期高排放环节及主要影响因素并提出了相应的低碳减排措施.结果表明:沥青路面施工期温室气体排放较高的环节为集料加热、沥青加热及沥青混合料拌合,分别占能源消耗温室气体排放总量的64.66%、14.63%和13.21%;集料加热和沥青加热环节温室气体排放较高的原因在于使用了含碳量较高的煤和重油作为能源,应加大清洁能源天然气的使用.研究成果明确了低碳减排研究方向的同时,对于绿色施工、建设低碳环保型沥青路面具有参考意义.

By investigating and analyzing the carbon sources of 10 highway asphalt pavements in several provinces of China, and combining with the calculation parameters of greenhouse gases provided by IPCC and China Energy Statistical Yearbook 2016, quantitative models of greenhouse gas emissions during construction of asphalt pavement with different energy sources are established. The high emission links and main influencing factors during construction are obtained, and corresponding low carbon emission reduction countermeasures are put forward. The results show that aggregate heating, asphalt heating and mixing of asphalt mixtures account for 64.66%, 14.63% and 13.21% of the total greenhouse gas emissions from energy consumption respectively. The high greenhouse gas emissions from aggregate heating and asphalt heating are due to the use of coal and heavy oil with high carbon content as energy sources, and the use of clean energy, natural gas, should be increased. The research results clarify the research direction of low carbon emission reduction, and at the same time, provide reference for guiding green construction and building low carbon environmental protection asphalt pavement.