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<p>Unregulated disposal of Construction and Demolition Waste (C&amp;DW) has become a significant concern in urban areas. Although many developed nations have implemented classification and recycling measures, China alone produces over two billion tons of C&amp;DW annually, with a recycling rate under five per cent. This study aims to enhance C&amp;DW management by establishing a differential game model for the C&amp;DW recycling and reproduction supply chain, introducing three types of subsidies: non-government subsidies (NGS), government subsidies for post-production costs (CGS), and after-sales unit government subsidies (UGS). The research evaluates how factors like the pricing of recycled products, their environmental impact, and quality influence consumer preferences. Additionally, it explores the decision-making processes of C&amp;DW producers and recyclers under different subsidy mechanisms. Key findings include: (1) When subsidies are limited, CGS effectively enhances recycled products' quality and green degree, while UGS better supports market circulation. (2) Under certain conditions, UGS is the most efficient way to boost the green attributes of recycled products. (3) The revenue of C&amp;DW producers may be lower under UGS compared to NGS. This research offers a diversified subsidy policy strategy for local government departments and provides practical guidance for C&amp;DW producers and recyclers, contributing to improved C&amp;DW management and promoting sustainable urban development.</p>

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How to achieve better construction and demolition waste management: insights from the recycled building materials supply chain

  • 期刊论文

  • 发表日期：

    2025年2月7日

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  • Feng Guo,
  • Yinghui Song

摘要

Unregulated disposal of Construction and Demolition Waste (C&DW) has become a significant concern in urban areas. Although many developed nations have implemented classification and recycling measures, China alone produces over two billion tons of C&DW annually, with a recycling rate under five per cent. This study aims to enhance C&DW management by establishing a differential game model for the C&DW recycling and reproduction supply chain, introducing three types of subsidies: non-government subsidies (NGS), government subsidies for post-production costs (CGS), and after-sales unit government subsidies (UGS). The research evaluates how factors like the pricing of recycled products, their environmental impact, and quality influence consumer preferences. Additionally, it explores the decision-making processes of C&DW producers and recyclers under different subsidy mechanisms. Key findings include: (1) When subsidies are limited, CGS effectively enhances recycled products' quality and green degree, while UGS better supports market circulation. (2) Under certain conditions, UGS is the most efficient way to boost the green attributes of recycled products. (3) The revenue of C&DW producers may be lower under UGS compared to NGS. This research offers a diversified subsidy policy strategy for local government departments and provides practical guidance for C&DW producers and recyclers, contributing to improved C&DW management and promoting sustainable urban development.