文献类型：期刊文献

英文题名：Comparative Life Cycle Assessment of Mass Timber and Concrete Residential Buildings: A Case Study in China

作者：Chen, Cindy X.[1] Pierobon, Francesca[2] Jones, Susan[3,4] Maples, Ian[4] Gong, Yingchun[5] Ganguly, Indroneil[2]

第一作者：Chen, Cindy X.

通信作者：Ganguly, I[1]

机构：[1]Portland State Univ, Populat Res Ctr, Portland, OR 97201 USA;[2]Univ Washington, Sch Environm & Forest Sci, Seattle, WA 98195 USA;[3]Univ Washington, Coll Built Environm, Seattle, WA 98195 USA;[4]Atelierjones LLC, Seattle, WA 98101 USA;[5]Chinese Acad Forestry, Inst Wood Ind, Beijing 100091, Peoples R China

年份：2022

卷号：14

期号：1

外文期刊名：SUSTAINABILITY

收录：;Scopus(收录号：2-s2.0-85121719722);WOS:【SSCI(收录号:WOS:000742447400001)，SCI-EXPANDED(收录号:WOS:000742447400001)】；

基金：External funding was received by The Nature Conservancy. The work upon which this project is based was also funded in whole or in part through a cooperative agreement with the USDA Forest Service, Forest Products Laboratory, Forest Products Marketing Unit (17-CA-11111169-031)*.

语种：英文

外文关键词：mass timber; embodied carbon; climate change; carbon reduction; building footprint; built environment; forest products; life cycle analysis

摘要：As the population continues to grow in China's urban settings, the building sector contributes to increasing levels of greenhouse gas (GHG) emissions. Concrete and steel are the two most common construction materials used in China and account for 60% of the carbon emissions among all building components. Mass timber is recognized as an alternative building material to concrete and steel, characterized by better environmental performance and unique structural features. Nonetheless, research associated with mass timber buildings is still lacking in China. Quantifying the emission mitigation potentials of using mass timber in new buildings can help accelerate associated policy development and provide valuable references for developing more sustainable constructions in China. This study used a life cycle assessment (LCA) approach to compare the environmental impacts of a baseline concrete building and a functionally equivalent timber building that uses cross-laminated timber as the primary material. A cradle-to-gate LCA model was developed based on onsite interviews and surveys collected in China, existing publications, and geography-specific life cycle inventory data. The results show that the timber building achieved a 25% reduction in global warming potential compared to its concrete counterpart. The environmental performance of timber buildings can be further improved through local sourcing, enhanced logistics, and manufacturing optimizations.