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首页> 外文期刊>Building and Environment >Comparative whole building LCAs: How far are our expectations from the documented evidence?
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Comparative whole building LCAs: How far are our expectations from the documented evidence?

机译：整个建筑比较性LCAs：我们的期望与书面证据有多远？

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摘要

Buildings are responsible for a considerable portion of the embodied and operational CO2 emitted by human activities. Some building attributes have taken on the mantle of "environmentally preferable". Through a systematic literature review, this paper investigates if the literature on whole building Life Cycle Assessments (LCA) confirms some environmental assumptions that are perceived as always truthful, e.g. (i) "wood is better than concrete and steel", (ii) "renovation is preferable to demolishing and building anew", and (iii) "operational loads are more intensive than embodied loads". The search also allowed to trace if advanced methodological modelling in LCA brings new insights into the mentioned perceptions. The assessment of over 250 case studies pointed that LCAs applied to complex systems, such as a building, embed crucial issues to be modeled, and rules of thumb lose veracity. Furthermore, as LCA incorporates deepened mathematical models, outcomes become less predictable, and paradigms should be interpreted with care.
机译：建筑物负责人类活动所排放的具体和可操作的二氧化碳。一些建筑属性占据了“环境优先”的地位。通过系统的文献综述，本文研究了有关整个建筑生命周期评估（LCA）的文献是否证实了一些被认为永远是真实的环境假设，例如（i）“木材比混凝土和钢材要好”，（ii）“翻新比拆除和重新建造更可取”，并且（iii）“操作负荷比实际负荷要大”。该搜索还可以跟踪LCA中的高级方法学建模是否为所提到的看法带来新的见解。对250多个案例研究的评估表明，LCA适用于复杂系统，例如建筑物，嵌入了要建模的关键问题，并且经验法则失去了准确性。此外，由于LCA合并了加深的数学模型，结果变得难以预测，并且应谨慎解释范例。

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  • 来源
    《Building and Environment》 |2020年第1期|106449.1-106449.12|共12页
  • 作者

    Saade Marcella Ruschi Mendes; Guest Geoffrey; Amor Ben;

  • 作者单位

    Univ Sherbooke Dept Civil & Bldg Engn Interdisciplinary Res Lab Sustainable Engn & Ecod 2500 Boul Univ Sherbrooke PQ J1K 2R1 Canada|NSERC Ind Res Chair Dev Flowable Concrete Adapted Ottawa ON Canada;

    Natl Res Council Canada NRC Construct Res Ctr 1200 Montreal Rd Ottawa ON K1A 0R6 Canada;

    Univ Sherbooke Dept Civil & Bldg Engn Interdisciplinary Res Lab Sustainable Engn & Ecod 2500 Boul Univ Sherbrooke PQ J1K 2R1 Canada;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Building; Life cycle assessment; Dynamic; Consequential; Biogenic; Carbonation;

    机译：建造;生命周期评估;动态;相应的;生物碳化;

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