サウジアラビアのメガプロジェクトにおける循環経済と建設廃棄物管理：Vision 2030の持続可能性目標への道筋

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:循環建設とデジタル素材パスポート研究の枠組み比較に有用。

🏢実務担当者:海外建設案件での廃棄物分別・調達仕様・循環指標設計の参考になる。

🏛政策担当者:建設廃棄物の転換率目標と契約インセンティブ設計の政策示唆。

Saudi Arabia’s Vision 2030 is accelerating the delivery of large-scale urban, tourism, transport, industrial and infrastructure projects while simultaneously strengthening national ambitions for environmental protection, resource efficiency and waste diversion. The scale of this development creates a strategic challenge: construction and demolition waste cannot be managed only as an end-of-pipe disposal problem. It must be addressed through a circular economy model that prevents waste, preserves material value, enables reuse and high-value recycling, and creates dependable markets for secondary construction materials. This paper develops a Saudi-contextualised pathway for integrating circular economy principles with construction waste management in mega-projects. A structured narrative review was undertaken using recent peer-reviewed literature, Saudi policy and regulatory sources, international circular-economy standards, and contemporary research on digital construction and material passports. The review identifies persistent barriers including fragmented responsibilities, limited lifecycle awareness, insufficient source segregation, inconsistent quality assurance for recovered materials, weak secondary-material demand, data gaps, and inadequate contractual incentives. In response, the paper proposes an integrated Circular Construction and Waste Management Framework organised around six linked stages: prevention and demand reduction; circular design; circular procurement; construction-stage segregation and control; recovery and quality assurance; and reintegration of secondary materials into new projects. Digital traceability, governance, market development and performance measurement operate across all stages. The framework introduces practical indicators for material efficiency, waste intensity, source segregation, diversion, reuse, recycled content and traceable recovery. Saudi Arabia’s reported rise in national waste diversion from 5% in 2018 to 18% in 2025, alongside a national 90% diversion target by 2040, demonstrates the wider policy direction in which construction circularity must operate. The study concludes that mega-projects can become demand anchors for circular material markets when client specifications, design decisions, contractor controls, recycling infrastructure and digital information systems are aligned. Empirical validation across active Saudi projects is recommended to quantify sector-specific benchmarks and test the proposed indicators.

• semanticscholar https://www.gajrc.com/media/articles/GAJEB_85_1717-1730.pdffirst seen 2026-10-17 05:31:18 · last seen 2026-11-06 05:46:30