Abstract
ATMOSPHERIC attack on stone statuary has increased considerably during the past few decades because of the presence of increasing amounts of gaseous pollutants such as SO2 and CO2 (ref. 1). There are two types of technique2 for the preservation of stone: those which provide, by means of impregnation, both a protective coating and a cement between dislodged grains; and those which change the chemistry of the stone so that the resultant substance is more resistant to attack.
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References
Winkler, E. M., Eng. Geol., 1, 381 (1966).
New York Conference on Conservation of Stone and Wooden Objects, 7–13 June 1970 (The International Institute for Conservation of Historic and Artistic Works, 176 Old Brompton Road, London SW5); Convegno Internationale di Studi per la Conservazione delle Sculture All'Aperto Bologna, 1969 (Ente Bolognese Manifestazioni Artistiche, Palazzo dei Notai, Bologna, Italy).
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GAURI, K. Improved Impregnation Technique for the Preservation of Stone Statuary. Nature 228, 882 (1970). https://doi.org/10.1038/228882a0
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DOI: https://doi.org/10.1038/228882a0
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