Choosing the consolidant for carbonate substrates: Technical performance and environmental sustainability of selected inorganic and organic products

This study aims at providing a dataset for selecting the most suitable consolidant for marble, limestone and lime mortar. Diammonium hydrogen phosphate (DAP), nanolimes (NL), ethyl silicate (ES) and acrylic resin (B72) were compared. Application was performed by brushing in different amounts to investigate the influence of the product consumption. Effectiveness, compatibility, durability and sustainability were evaluated. DAP showed several advantages over the alternative consolidants, in terms of both technical performance and sustainability. ES exhibited high efficacy but also risks of poor compatibility and durability, together with a high global warming potential. NL and B72 provided the least promising results.