globalchange  > 过去全球变化的重建
DOI: 10.1016/j.cemconcomp.2019.03.019
WOS记录号: WOS:000466824900021
论文题名:
Effect of transportation of fly ash: Life cycle assessment and life cycle cost analysis of concrete
作者: Panesar, Daman K.; Kanraj, Deepak; Abualrous, Yasar
通讯作者: Panesar, Daman K.
刊名: CEMENT & CONCRETE COMPOSITES
ISSN: 0958-9465
EISSN: 1873-393X
出版年: 2019
卷: 99, 页码:214-224
语种: 英语
英文关键词: Concrete ; Fly ash ; Life cycle assessment (LCA) ; Life cycle cost (LCC) ; Transportation
WOS关键词: ENVIRONMENTAL-IMPACT ; RECYCLED CONCRETE ; SILICA FUME ; HIGH-VOLUME ; DURABILITY ; STRENGTH
WOS学科分类: Construction & Building Technology ; Materials Science, Composites
WOS研究方向: Construction & Building Technology ; Materials Science
英文摘要:

The incorporation of fly ash into concrete may be limited by its quality, local availability, and additional cost incurred due to transportation. The specific objectives of this study are to: conduct an experimental program to evaluate the material properties for the four concrete mix designs considered for analysis (100GU, 25FA, 35FA, SOFA); identify environmental impact categories that are most greatly affected by material transportation; develop a life cycle assessment (LCA) model and a life cycle cost (LCC) model to respectively quantify the environmental and economic benefits and/or burdens that reflect the interplay between concrete mix designs and transportation of fly ash (up to 1000 km by truck). This analysis considers a study period of 100 years and is based on the proposed repair schedule. This study defines the 'break-even distance' as the maximum distance at which the LCA or LCC analysis results (i.e. environmental impact or cost) for concrete containing fly ash is lower than corresponding results for the 100GU concrete. Key outcomes of this study are: (i) 'ecotoxicity% 'human toxicity (non-cancer)', and 'resources and fossil fuels' are the most highly affected environmental impact categories by transportation of fly ash. In contrast, global warming potential was minimally affected. (ii) The breakeven distance depends on the time to first repair (TFR), total volume of concrete required over 100 years of being in service and the percentage of cement replacement by fly ash. For both the LCA and LCC analysis, the concrete mix, 35FA, has the lowest break-even distance compared to the 25FA and SOFA. The fly ash mix designs ranked in order of least to most environmentally friendly and economically viable are: 35FA, 25FA, and SOFA. (iii) The break-even distances are longer for the LCC analysis compared to the LCA model results which indicates that the environmental impacts associated with the transportation of fly ash are more severe than the cost associated with the process, based on the analysis and assumptions in this study.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/137258
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作者单位: Univ Toronto, Dept Civil Engn, 35 St George St, Toronto, ON M5S 1A4, Canada

Recommended Citation:
Panesar, Daman K.,Kanraj, Deepak,Abualrous, Yasar. Effect of transportation of fly ash: Life cycle assessment and life cycle cost analysis of concrete[J]. CEMENT & CONCRETE COMPOSITES,2019-01-01,99:214-224
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