Journal
ENVIRONMENTAL EARTH SCIENCES
Volume 62, Issue 6, Pages 1263-1272Publisher
SPRINGER
DOI: 10.1007/s12665-010-0614-3
Keywords
Stone conservation; Historic building materials; Protective treatments; Calcarenite; Noto; Sicily
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Noto is an important Baroque urban center in south-eastern Sicily, which was completely reconstructed after the severe earthquake of 1693. Most of its monuments and historic buildings were built in Pietra di Noto stone, a pale cream calcarenite, quarried in outcrops located near the city. This stone, still currently used as building material, is undergoing many forms of alteration and degradation, which cause significant damage to monuments. In this study, three commercial protective products were tested on some Noto calcarenite samples from quarries, with the aim of assessing their protective effectiveness. In particular, petrographic analyses by optical microscopy were carried out for textural characterization of the stone materials. Capillary water absorption, porosimetric and colorimetric procedures, UV radiation and salt crystallization aging tests were performed to better evaluate interactions between protective products and substrate.
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