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Conservation and Investigation of Cometh the Sun: A Monumental Corten Steel Sculpture

AuthorsChemello, C.; Cano Díaz, Emilio ; Mardikian, P.; Crespo, A. ; Patterson, C.
KeywordsCorten steel
Weathering steel
Monumental sculpture
Issue Date2-Sep-2019
CitationMetal 2019
AbstractIn 2016, Terra Mare Conservation, LLC, was contracted by the City of Atlanta, Georgia, to undertake conservation of Cometh the Sun, a monumental sculpture fabricated in weathering steel by artist Curtis Patterson. The collaborative project involved conservators, metal fabricators, metal trades, city public art officials, and the artist. The sculpture has a combined weight of 5.7 tons, and is 15.2 meters in length, 6 meters in width, and 4.5 meters in height. Conservation efforts involved disassembly, replacement of 40 severely corroded areas of steel, artificial patination, sealing of moisture-prone areas, drainage enhancement through the installation of new anchors and footers and a concrete slab, and reassembly. Samples of the original weathering steel patina and new artificially patinated samples of A588 weathering steel were assessed by electrochemical impedance spectroscopy (EIS) using a gel-polymer electrolyte cell. Composition of the natural and artificial patinas was assessed by Raman spectroscopy, and thickness and color were measured. Analytical results demonstrated that the poor performance of the natural patina was not attributable to pollutants but to improper development in areas prone to water retention. These findings highlight the need to follow manufacturers¿ specifications when using weathering steel to prevent failure of the protective patina.
DescriptionTriennial conference of the International Council of Museums Committee for Conservation Metal Working Group (ICOM-CC Metal WG)
Publisher version (URL)https://metal2019.org/conference/program/
Appears in Collections:(CENIM) Comunicaciones congresos
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