Research  on  the  Resource  Utilization  of  Vacant  Houses

End  Of  Life

Background and Purpose

　This study aims to reevaluate the value of vacant houses as real estate and resource reservoirs, explore the potential for productive building demolition toward establishing a circular built environment, and clarify the optimal approaches to product manufacturing, architectural design, and construction derived from the optimal demolition process. It seeks to derive insights contributing to the transition toward a circular and sustainable societal system.

Results

　This study clarified the structure of CO₂ emissions during the building disposal phase and indicated directions for reduction. It specifically demonstrated that demolition work and waste material transportation significantly impact emissions, with the processing of wood-based waste materials also being a major factor. Furthermore, it confirmed that thermal utilization of wood-based waste materials and recycling of plastics yield greater reduction effects than disposal-type processing. Additionally, it emphasized the importance of a framework that evaluates the entire lifecycle from construction to disposal, not just the disposal phase.