Reverse logistics processes of multi-type end-of-life buildings/construction sites: An integrated optimization framework

A significant problem that has emerged in the field of construction and demolition waste management (C&D), involves the integrated optimization of the entire C&D waste supply chain. The critical decisions to be made include among others: (i) the determination of the optimal deconstruction depth for each EOL construction site before the demolition process, and (ii) the design of an effective transportation and recovery network for shipping deconstruction products and waste from deconstruction/demolition sites to potential recyclers/customers and waste disposal sites. In this context, we propose a novel integrated model for optimizing the reverse logistics processes of multi-type end-of-life buildings/construction sites in a single planning period. An additional innovative feature of the proposed methodological approach is that the final recipients/recyclers may provide different pricing policies in a stepwise manner, depending on the quantity of materials that they receive. Finally, a specific case study is presented in order to demonstrate the applicability of the proposed decision-making model, while few interesting managerial insights regarding the behavior of the optimal solution are obtained and discussed.