School of Management and Economics, Beijing Institute of Technology, P.R. China.
Department of Architecture and Engineering, Yan'an University, P.R. China.
Waste Manag Res. 2020 Jul;38(7):792-801. doi: 10.1177/0734242X20908925. Epub 2020 Mar 12.
The inadequate reuse and recycle of construction and demolition waste (C&DW) has been identified as a major issue, as it implies the depletion of natural aggregates, massive occupation of landfill and inefficiency of construction industry. However, a holistic view involving economic, technical and comprehensive dimensions has rarely been adopted for C&DW utilization evaluation against both qualitative and quantitative criteria. In this study, we propose a framework in a heterogeneous group decision-making environment to solve the C&DW utilization mode selection problem by integrating the Choquet integral and the elimination and choice translating reality (ELECTRE) method with two data forms, that is, interval-valued hesitant fuzzy numbers and real numbers. Firstly, an evaluation index system is constructed to assess multiple representative C&DW utilization modes in Xi'an, China. Secondly, a novel method is proposed to apply the Choquet integral for aggregation of evaluation values and fuzzy ELECTRE for outranking of C&DW utilization modes after the heterogenous evaluation data are unified into interval numbers. Thirdly, to illustrate the application of the proposed framework, this paper evaluates four typical C&DW utilization modes based on a case study in Xi'an, China, and the result shows that the most preferable mode is A (off-site crushing, roadbed backfilling). Finally, a comparative analysis is conducted to verify the effectiveness of this framework. This study presents useful findings to C&DW practitioners and can help avoid intuitive selection among available C&DW utilization modes.
建筑和拆除废物（C&DW）的不合理再利用和再循环已被确定为一个主要问题，因为这意味着天然骨料的枯竭、大量的垃圾填埋场占用以及建筑行业的效率低下。然而，对于 C&DW 的利用评估，很少采用涉及经济、技术和综合维度的整体观点，无论是定性的还是定量的标准。在本研究中，我们在异构群体决策环境中提出了一个框架，通过将 Choquet 积分和排除和选择转化现实（ELECTRE）方法与两种数据形式（即区间值犹豫模糊数和实数）相结合，来解决 C&DW 利用模式选择问题。首先，构建了一个评估指标体系，以评估中国西安的多种具有代表性的 C&DW 利用模式。其次，提出了一种新方法，将异构评价数据统一为区间数后，利用 Choquet 积分进行评价值的聚合，利用模糊 ELECTRE 进行 C&DW 利用模式的优劣排序。第三，为了说明所提出框架的应用，本文基于西安的一个案例研究评估了四种典型的 C&DW 利用模式，结果表明最可取的模式是 A（现场破碎，路基回填）。最后，进行了对比分析以验证该框架的有效性。本研究为 C&DW 从业者提供了有用的发现，并有助于避免在可用的 C&DW 利用模式之间进行直观的选择。
