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Relevance Of Simplifications In Lca Of Building Components

机译：建筑构件Lca中简化的相关性

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This paper provides a detailed analysis of life cycle assessment (LCA) results of different building components (e.g. wooden wall, concrete roof) on different levels of simplification (from a comprehensive LCA including all materials and processes to the fully reduced component including only the main materials remaining in the component). The main objective is the determination of the relevance of materials and processes often neglected in simplified LCA of building components which aim at providing results of similar quality as comprehensive assessments with less effort. The studied simplifications are categorised in transportations of the building materials from the factory gate to the building site, some ancillary materials which are not obvious in the component, the building process itself and the associated cutting waste. The results show that transports and ancillary materials are of relevance while the building process and the cutting waste can be neglected. The heavier the used materials and the longer the transport distances the bigger is the influence of transports on the LCA results. The influence of the ancillary materials is highest for wooden constructions as a lot of screws nails and other connectors are essential.
机译：本文详细分析了不同建筑物组件（例如，木墙，混凝土屋顶）在不同简化程度下的生命周期评估（LCA）结果（从包括所有材料和过程的全面LCA到仅包括主要构件的完全减少的构件）组件中剩余的材料）。主要目标是确定通常在建筑构件的简化LCA中被忽略的材料和过程的相关性，该目标旨在以较少的努力提供与综合评估相似的质量结果。研究的简化归类于从工厂大门到建筑工地的建筑材料运输，在组件中不明显的一些辅助材料，建筑过程本身以及相关的切割废料。结果表明，运输和辅助材料具有相关性，而建筑过程和切屑的浪费可以忽略。使用的材料越重，运输距离越长，运输对LCA结果的影响越大。辅助材料对木制结构的影响最大，因为许多螺丝钉和其他连接器必不可少。

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