Performance study of graphene oxide as an antierosion coating for ornamental and heritage dolostone
| Autor: | Rebeca Martínez‐García, David González‐Campelo, Fernando J. Fraile‐Fernández, Ana María Castañón, Pablo Caldevilla, Sara Giganto, Almudena Ortiz‐Marqués, Flavia Zelli, Víctor Calvo, José M. González‐Domínguez, María Fernández‐Raga |
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| Přispěvatelé: | Universidad de León, Fundación General de la Universidad de León y de la Empresa, Ministerio de Ciencia e Innovación (España), Agencia Estatal de Investigación (España), Junta de Castilla y León, Martínez García, Rebeca, Fraile-Fernández, Fernando J., Castañón, Ana M., Caldevilla, P., Giganto, Sara, Ortiz Marqués, Almudena, Zelli, Flavia, Calvo Peña, Víctor, González Domínguez, José Miguel, Fernández Raga, M. |
| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Popis: | 9 figures, 2 tables.-- Supplementary information available. Concern for the perpetuation of stone monuments is deeply ingrained in humans; however, despite the attempts made in this field, there is still a great deal of effort needed to bring about advancements in the conservation of ornamental stone. Erosive agents, such as rain, extreme temperatures, and chemical and biological agents, threaten our stone heritage and gradually wear away buildings, sculptures, and other monuments found all around the world. Limestone and dolostone have been widely used throughout history, given their ease of extraction and workability. Nevertheless, these properties make them particularly vulnerable to the aforementioned erosive agents, for which the main solution at present is costly and time-consuming restoration. Given the scarcity of effective and durable agents to prevent the deterioration of ornamental and heritage stones, and as graphene oxide (GO) has recently shown impressive effectiveness for this task, this work will further explore the viability of GO as a protective coating for monumental dolostone. For this purpose, GO is sprayed over dolostone surfaces by water dispersion with no adjuvants. The coating performance is assessed in terms of thermal stress, optical inspection (structured light 3D scanner), colorimetry, leachate analysis, and electron microscopy. The main results show that spray-coated GO over stone surfaces creates a highly protective and durable barrier without altering their aesthetic qualities. This research received funding from the University of León (ULE-PoC 2018) and Fundación General de la ULE y de la Empresa (FGULEM) under projects 2019/00149/001 and 2020. This research was also funded through an awarded MICINN project (PID2020-120439RA-I00). The authors are also thankful to the “Applied innovation against climate change and other aggressions on stone monuments (PRESERVARTE)” project of the Regional Ministry of Culture and Tourism of Castilla y León, which will be used to complement this research in the future. |
| Databáze: | OpenAIRE |
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