Energy consumption and carbon emission evaluation of expressway asphalt pavement(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2016年05期
- Page:
- 8-15
- Research Field:
- 道路工程
- Publishing date:
Info
- Title:
- Energy consumption and carbon emission evaluation of expressway asphalt pavement
- Author(s):
- PENG Bo; CAI Chun-li; HU Ru-an
- 1. School of Highway， Chang’an University， Xi’an 710064, Shaanxi, China; 2. Zhengzhou Hualuxing Highway Technology Co. Ltd., Zhengzhou 450016, Henan, China; 3. Traffic Science Research Institute of Yunnan Province, Kunming 650000, Yunnan, China
- Keywords:
- road engineering; expressway asphalt pavement; carbon emission; maximum deviation method; weight coefficient; carbon emission evaluation
- PACS:
- U416
- DOI:
- -
- Abstract:
- 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 the carbon 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 lowcarbon 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.
Last Update: 2016-10-04