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RESIDENTIAL LIFE CYCLE ASSESSMENT MODELING: COMPARATIVE CASE STUDY OF INSULATING CONCRETE FORMS AND TRADITIONAL BUILDING MATERIALS

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Journal of Green Building 2010年第3期5卷 95-106页

作者： neethi rajagopalan Melissa M.Bilec Amy E.Landis Department of Civil and Environmental Engineering University of Pittsburgh949 Benedum HallPittsburgh PA15261

Innovative,sustainable construction products are emerging in response to market *** potential product,insulating concrete forms(ICFs),offers possible advantages in energy and environmental performance when compared with traditional construction *** though ICFs are in part derived from a petroleum-based product,the benefits in the use phase outweigh the impacts of the raw material extraction and manufacturing *** paper quantitatively measures ICFs’performance through a comparative life cycle assessment of wall sections comprised of ICF and traditional *** life cycle stages included raw materials extraction and manufacturing,construction,use and end of life for a 2,450 square foot house in Pittsburgh,*** showed that even though building products such as ICFs are energy intensive to produce and thus have higher environmental impacts in the raw materials extraction and manufacturing phase,the use phase dominated in the life *** the use phase,the home constructed of ICFs consumed 20 percent less energy when compared to a traditional wood-frame *** results of the impact assessment show that ICFs have higher impacts over wood homes in most impact *** high impacts arise from the raw materials extraction and manufacturing phase of *** there are a number of embedded unit processes such as disposal of solid waste and transport of natural gas that contribute to this high impact and identifying the top unit process and substance contributors to the impact category is not *** different unit processes or impact assessment methods will yield dissimilar results and the tradeoffs associated with every building product should be considered after studying the entire life cycle in detail.

关键词： building products insulating concrete forms life cycle assessment environmental impacts

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