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<p>The construction sector significantly contributes to environmental degradation due to intensive resource consumption and large volumes of waste generation. Rapid urbanization further increases the need for sustainable construction waste management strategies. This study evaluates the environmental performance of construction waste management systems in the lower northern region of Thailand by integrating Circular Economy (CE) strategies within a Life Cycle Assessment (LCA) framework. Two scenarios were analyzed: a Business-as-Usual (BAU) system representing conventional waste handling practices and a CE scenario incorporating enhanced recycling, material recovery, and energy recovery processes. The analysis covered six major construction waste streams—concrete, steel, wood, glass, paper, and mixed waste—and assessed environmental impacts across eighteen midpoint indicators, including climate change, resource depletion, land use, water consumption, and pollution-related impacts. Results indicate that the CE scenario significantly improves environmental performance compared with the BAU system, particularly through reductions in greenhouse gas emissions, resource depletion, land occupation, and ecotoxicity due to increased material recovery and improved recycling technologies. However, CE implementation also introduces trade-offs, including higher transportation-related emissions and particulate matter formation associated with expanded recycling logistics. These findings highlight the need for optimized waste transportation systems, decentralized recycling infrastructure, and low-emission technologies. Overall, the study provides a region-specific LCA framework and empirical evidence to support circular economy implementation in construction waste management, contributing to climate change mitigation and the achievement of the Sustainable Development Goals (SDGs).</p>

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Life Cycle Assessment of Circular Economy Strategies for Construction Waste Management: Evidence from Thailand’s Lower Northern Region

  • 期刊论文

  • 发表日期：

    2026年3月30日

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  • Putthadee Ubolsook,
  • Krissana Khamfong,
  • Yasintinee Aimyuak,
  • Pongthep Jansanthea,
  • Ratree Kummong,
  • Karun Chaivanich,
  • Surat Sedpho

摘要

The construction sector significantly contributes to environmental degradation due to intensive resource consumption and large volumes of waste generation. Rapid urbanization further increases the need for sustainable construction waste management strategies. This study evaluates the environmental performance of construction waste management systems in the lower northern region of Thailand by integrating Circular Economy (CE) strategies within a Life Cycle Assessment (LCA) framework. Two scenarios were analyzed: a Business-as-Usual (BAU) system representing conventional waste handling practices and a CE scenario incorporating enhanced recycling, material recovery, and energy recovery processes. The analysis covered six major construction waste streams—concrete, steel, wood, glass, paper, and mixed waste—and assessed environmental impacts across eighteen midpoint indicators, including climate change, resource depletion, land use, water consumption, and pollution-related impacts. Results indicate that the CE scenario significantly improves environmental performance compared with the BAU system, particularly through reductions in greenhouse gas emissions, resource depletion, land occupation, and ecotoxicity due to increased material recovery and improved recycling technologies. However, CE implementation also introduces trade-offs, including higher transportation-related emissions and particulate matter formation associated with expanded recycling logistics. These findings highlight the need for optimized waste transportation systems, decentralized recycling infrastructure, and low-emission technologies. Overall, the study provides a region-specific LCA framework and empirical evidence to support circular economy implementation in construction waste management, contributing to climate change mitigation and the achievement of the Sustainable Development Goals (SDGs).