| Title | ?Estimating the recoverable value of in-situ building materials? |
|---|---|
| ID_Doc | 20383 |
| Authors | Mollaei, A; Bachmann, C; Haas, C |
| Title | ?Estimating the recoverable value of in-situ building materials? |
| Year | 2023 |
| Published | |
| Abstract | Construction, renovation and demolition of buildings in our cities is driving substantial material consumption and waste streams. They can be reduced by recovering in-situ materials from buildings with controlled demo-lition, disassembly, and deconstruction of components and materials. To do this, a decision support tool that can be used to estimate current recoverable environmental and market values from the owner's perspective of in-situ construction materials in a specific facility must be developed. Here, a linear programming optimization methodology is used that considers cost, value, duration, environmental impacts, and building component precedence in demolition and deconstruction activities. It helps choose the optimal combination of reuse, recycling and disposal options for those materials. The resulting decision support tool is functionally demon-strated on an institutional building to find the building components' optimal end-of-life alternatives to maximize the recovered value from the in-situ materials. Sensitivity analyses add further validation. Thus, this research supports the transition to a more circular economy in cities by making it easier to realize the full value of in-situ materials for planning, asset management, and demolition project bids. |
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