Matching Demolition and Construction Material Flows, an Urban Mining Case Study

The recycling of demolition waste is essential to lower the construction sectors primary material demand, responsible for 50% global consumption. Almost all used as filler roads, preventing further reuse or after this application. built environment generates considerable annual in-and outflows. However, there has been little discussion on availability and application potential supply secondary materials a replacement materials. In study, we quantify percentage that can be repurposed in Dutch sector. We analyzed yearly building flows municipality Leiden using municipal data explore viability government’s policy goal reduce consumption by before 2030. From analysis, find sizable but just falls short stated goal. Even situation with more than demolition, will remain mismatch demand available our municipal-wide case study. More importantly, current processing Netherlands require significant improvements achieve New governmental policies are required focus maintaining quality allowing use recycled buildings