Abstract

Excessive building demolition waste (BDW) has become a major factor affecting the ecological environment. In recent years, scholars have explored BDW disposal from various perspectives, including policy, theory, and technology. However, the current recycling and reusing rate of BDW remains low. Thus, this paper explores a novel market-oriented circulation channel for BDW and proposes a BDW trading conceptual framework based on digital twin (DT). Two key technologies and four key services involved are discussed. To verify the effectiveness of the framework, a real-life case study is conducted by integrating IoT, big data, robotics, and 3D printing technologies. With the DT-based BDW trading system, BDW disposal processes could be accurately mapped. Contractors and recyclers could conduct online product browsing, communication, and transactions. The digital bi-directional information interaction shows great potential for improving the recycling and reusing rate of BDW.

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