基于生命周期評價方法半剛性基層施工過程中溫室氣體排放分析研究.pdf

1、At present the global climate warming increasingly, global warming with the great negative impact has made human realize the importance to reduce greenhouse gas emissions.In order to slow down climate change ,all works o

2、f life in the global are committed to save energy. Our country's road infrastructure with high coverage, more than 90％ highway use semi rigid base pavement structure.Therefore this paper analysis in detail the greenhouse

3、 gas emissions of semi-rigid base construction process, and finds out the potential of emissions reduction during the semi-rigid base construction.
　　Based on road life cycle assessment(LCA), the paper analyses of gre

4、enhouse gas emissions during the construction process of our country's typical semi-rigid base-the the cement stable macadam. The system boundaries of the roads life cycle is set for: extraction and manufacture of raw ma

5、terials, transportation, mixing, paving, rolling and water spraying maintenance seven stages, not considering the process of operation period and reconstruction stage.First of all, the paper detailed analysis of the vari

6、ous stages of the greenhouse gas emissions, given the gas emissions source list; Secondly, to different emissions source give the method of quantitative emissions; Finally, will the method given above applied to project

7、case.
　　The raw materials considered in this paper including: cement, gravel and electricity. The research results show that the whole of cement stable macadam construction process's greenhouse gase emission mainly co

8、mes from raw material acquisition phase,and the cement production process account for more than 90%;The greenhouse gas emissions during construction stages mainly comes from all kinds of construction machinery fuel emiss