Estimating net changes in life-cycle emissions from adoption of emerging civil infrastructure technologies

被引:0
|
作者
Amponsah, Isaac [1 ]
Harrison, Kenneth W. [1 ]
Rizos, Dimitris C. [2 ]
Ziehl, Paul H. [2 ]
机构
[1] Univ S Carolina, Dept Civil & Environm Engn, Environm Program Area, Columbia, SC 29208 USA
[2] Univ S Carolina, Dept Civil & Environm Engn, Struct Program Area, Columbia, SC 29208 USA
关键词
D O I
10.3155/1047-3289.58.1.55
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
There is a net emissions change when adopting new materials for use in civil infrastructure design. To evaluate the total net emissions change, one must consider changes in manufacture and associated life-cycle emissions, as well as changes in the quantity of material required. In addition, in principle one should also consider any differences in costs of the two designs because cost savings can be applied to other economic activities with associated environmental impacts. In this paper, a method is presented that combines these considerations to permit an evaluation of the net change in emissions when considering the adoption of emerging technologies/materials for civil infrastructure. The method factors in data on differences between a standard and new material for civil infrastructure, material requirements as specified in designs using both materials, and price information. The lifecycle assessment approach known as economic input-output life-cycle assessment (EIO-LCA) is utilized. A brief background on EIO-LCA is provided because its use is central to the method. The methodology is demonstrated with analysis of a switch from carbon steel to high-performance steel in military bridge design. The results are compared with a simplistic analysis that accounts for the weight reduction afforded by use of the high-performance steel but assuming no differences in manufacture.
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页码:55 / 64
页数:10
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