...
首页> 外文期刊>Waste Management >Reusing exterior wall framing systems: A cradle-to-cradle comparative life cycle assessment
【24h】

Reusing exterior wall framing systems: A cradle-to-cradle comparative life cycle assessment

机译:重用外墙框架系统:从摇篮到摇篮的比较寿命周期评估

获取原文
获取原文并翻译 | 示例
           

摘要

The construction industry consumes 40% of the global materials and produces one of the largest waste streams in the planet. In a circular economy, the reuse of building components in multiple life cycles aims at increasing resource efficiency and eliminating waste. But can reuse offset the environmental impacts of materials with high embodied energy (e.g. steel)? If so, in what conditions? In the study presented in this paper, the authors used two different life cycle assessment (LCA) methods to compare a single-use wood-framed wall against a reusable steel-framed wall in a tiny house in the U.S. The analyzed impact categories were global warming potential, embodied energy, and water use. One of the main goals of this study was to understand the benefits of reusing a material with high embodied energy when compared to a single-use alternative. Another equally important objective was to understand how different LCA methods can influence the results in a cradle-to-cradle (C2C) LCA. As results, reuse benefits depended on aggressive reuse rates (70%) and multiple reuses of steel were needed to offset the embodied environmental impacts during steel production. Also, the analyses showed that process-based LCA and hybrid LCA can generate conflicting results in a C2C LCA. (C) 2019 Elsevier Ltd. All rights reserved.
机译:建筑业消耗了全球40%的材料,并产生了地球上最大的废物流之一。在循环经济中,在多个生命周期中重复使用建筑组件的目的在于提高资源效率并消除浪费。但是重复使用能否抵消具有高体现能的材料(例如钢)对环境的影响?如果是这样,在什么条件下?在本文提出的研究中,作者使用两种不同的生命周期评估(LCA)方法在美国一所小房子中比较了一次性木结构墙与可重复使用的钢结构墙。分析的影响类别是全球性的潜在的变暖,能源和水的消耗。这项研究的主要目的之一是要了解与单次使用的替代品相比,重复使用具有高体现能量的材料的好处。另一个同样重要的目标是了解不同的LCA方法如何影响从摇篮到摇篮(C2C)LCA的结果。结果,再利用收益取决于积极的再利用率(> 70%),并且需要多次重复利用钢铁以抵消钢铁生产过程中对环境的影响。此外,分析表明,基于过程的LCA和混合LCA可能在C2C LCA中产生冲突的结果。 (C)2019 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号