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Contribution of life cycle assessment to the quantification of the environmental impacts of construction systems

机译:生命周期评估有助于量化建筑系统的环境影响

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This study consists of a Life Cycle Assessment (LCA) applied to a school building located in the Midwestern region of Brazil. The objective was to identify the contribution of the foundation and superstructure systems, both made of reinforced concrete; mortar coated masonry walls; a roof covered with thermo-acoustic tiles; aluminum window frames; and ceramic floors to the environmental impact categories defined in the methodology. The study used the cradle-to-gate approach for a functional unit with 1.0sqm of built area. The Life Cycle Inventory (LCI) was calculated using the Ecoinvent 2.0 database, considering World ReCiPe Midpoint H for the Life Cycle Impact Assessment (LCIA) method. The SimaPro 8.0 software was used for modeling. The conclusion was that the superstructure, roof and masonry walls were the systems that had the greatest impact, which indicates the need to find innovative alternatives to minimize the environmental impacts of the systems usually employed. Hence, this paper contributes to the development of LCA in Brazil, as it discusses the bottlenecks and difficulties observed in its application. This study also demonstrates the need to adapt the European manufacturing processes inventories to the Brazilian reality, since national inventories are still incipient.
机译:这项研究包括对位于巴西中西部地区的一栋教学楼进行的生命周期评估(LCA)。目的是确定由钢筋混凝土制成的基础和上层建筑系统的贡献;砂浆涂层的砌体墙;用热声砖覆盖的屋顶;铝窗框;和陶瓷地板要符合方法中定义的环境影响类别。这项研究使用了从摇篮到大门的方法来构建面积为1.0平方米的功能单元。生命周期清单(LCI)是使用Ecoinvent 2.0数据库计算的,其中考虑了生命周期影响评估(LCIA)方法的World ReCiPe中点H。使用SimaPro 8.0软件进行建模。结论是,上部结构,屋顶和砌体墙是影响最大的系统,这表明需要寻找创新的替代方案以最大程度地减少通常使用的系统对环境的影响。因此,本文讨论了LCA在应用中存在的瓶颈和困难,为巴西LCA的发展做出了贡献。这项研究还表明,由于国家库存仍处于起步阶段,因此有必要使欧洲的制造过程库存适应巴西的实际情况。

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