Green multi-action products for the sustainable conservation of historic porous building stones

This project is alligned with the UN's 2030 Agenda for Sustainable Development and is based on the unique concept of proposing a multi-action product (PMa) grounded in "green chemistry" and a work plan that includes an analysis of technical and environmental performance. The goal is to develop and validate a PMa suitable for porous stones (PP) of silicate and carbonate nature. This product will have a consolidating and protective action against degradation, biocolonization, and graffiti through hydrophobic/oleophobic properties and a long-term biocidal effect. This innovative concept allows for a more rational use of resources and minimizes the ecological footprint of product manufacturing processes and the amount of hazardous substances, while providing more environmentally friendly products. The strategy is to combine "green chemistry" and nanotechnology.

Subsequently, the rigorous validation process of the product, both in "laboratory" porous stones and "historical" ones, will ensure its high maturity and guarantee a significant impact of the project. The environmental impact of the new PMa and the treatments involved will be studied through a life cycle analysis. The results will be compared with current practices, resulting from the repeated application of different single-action products. Although developing an environmentally friendly, effective, compatible, and durable multi-action product for PP of different natures is a demanding challenge, the consortium is well-positioned to achieve the goal. The commitment of entities with relevance in the conservation of national cultural heritage will allow for the effective dissemination of project results, as well as validate the efficacy and compatibility of the PMa in historical PP from Portuguese monuments. The project will be implemented by a multidisciplinary team, composed of researchers with experience in developing innovative materials and ecological solutions for the conservation of built heritage.