Monitoring the performance of innovative and traditional biocides mixed with consolidants and water-repellents for the prevention of biological growth on stone

Performances and Coating Morphology of a Siloxane-Based Hydrophobic Product Applied in Different Concentrations on a Highly Porous Stone

“…For this reason, nowadays, the effectiveness and harmlessness of the treatment are carefully evaluated and monitored by in situ investigations [17][18][19][20]. In addition, the sustainability of the treatments, in terms of costs and environmental impact, has become a key consideration in the 21st century and it is taken into account when selecting the most appropriate conservation solution.…”

Conservation of the Exterior of the National Museum of the American Indian Building

“…A more sophisticated, but labor-intensive, method was developed , but a more practical approach, such as colorimetric evaluation, could also be used (Prieto et al, 2004;Pinna et al, 2012). Colorimetric evaluation is already being implemented to monitor changes undergone by the capstones on the Senator Daniel K. Inouye Terrace from pre-to postcleaning and beyond until reinfection.…”

An operational preventive conservation system based on the Monumentenwacht model

“…The researchers used lime as binder of the mortars, and studied two main typologies of mixtures: hydraulic mortars (adding additives to the aerial lime) and natural hydraulic mortars. Regarding the second scope, the researchers chose the most compatible and used waterproof treatment for lime mortars, associated to a biocide that gave optimal results under previous tests (Pinna, Salvadori, & Galeotti, 2012). The waterproof product was applied to the specimens, and tested in the laboratory; the biocide was applied on the northern facade and tested on the site.…”