| Popis: |
Salt mixtures found in building materials and stone sculptures have been analyzed in the Monuments Laboratory at KIK-IRPA since the early 1960’s. The common salt mixtures database is a spreadsheet based on the results of quantitative ion analyses carried out with Ion Chromatography at KIK-IRPA since 2004, currently counting almost 6000 records of samples from Belgian monuments and sculptures, e.g., about 1600 brick and mortar samples, 300 wall plaster and 581 natural stone samples. Today, approximately 500 samples are yearly analyzed and added to the database. The samples are classified by location, type of material, depth and height. The main objective of this database is to generate average compositions of salt mixtures according to different criteria such as the geographic region, the type of building material, the depth and the height and hence to narrow down specific research needs and move from single salts to relevant salt mixtures. The average ion content representative for a selected group of samples is entered into the program ECOS/RUNSALT to predict the crystallization behavior. The outputs reveal a complex mixture consisting of kieserite, starkeyite, thenardite, nitratine, niter, darapskite, halite, bloedite and aphthitalite. Ultimately the location data will be linked to a geographic information system (GIS) and the database will be made available online so that researchers active in the field of salt analyses can add data. Keywords: salt, database, conservation, monuments, ecos |
