Waste management in the restoration works of the “puerta de alcalá”: challenges and sustainable solutions
DOI:
https://doi.org/10.20868/ade.2024.5459Keywords:
waste management, heritage, lead, in-situ reuseAbstract
The restoration of heritage sites presents unique challenges in waste management, as these differ significantly from conventional construction waste. This study analyzes sustainable waste management in the restoration of the Puerta de Alcalá, an emblematic monument in Madrid and a UNESCO World Heritage Site. Given the lack of specific literature on waste management in heritage restoration, it is valuable to share the strategies used for future cultural heritage restorations. During the restoration process, inspections and sampling were conducted to characterize the waste and assess its potential for recycling or disposal. This data was compared with the waste management plan, enabling an analysis of the challenges and opportunities encountered. An attempt was made to reuse lead from the roofing—melted and purified on-site successfully—as well as projected aluminum silicate, which was ultimately discarded due to technical issues.
The original iron in the sculptural structures was restored due to its high quality, with additional iron sourced from other restorations when needed. This approach, along with collaboration with companies specializing in historical materials, proved essential for waste reduction. The experience demonstrates that practices such as source separation, reuse, and the valorization of historical materials are crucial for waste minimization, though some methods need adjustments to improve their effectiveness. Adopting sustainable practices not only preserves cultural heritage but also promotes sustainability and circular economy principles within the construction sector
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