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Comparative study of the variation of the hydric properties and aspect of natural stone and brick after the application of 4 types of anti-graffiti

By O. García, I. Rz-Maribona, A. Gardei, M. Riedl, Y. Vanhellemont, M. L. Santarelli and J. Strupi Suput

Abstract

In this article a comparative study of the behaviour of different commercial anti-graffiti on natural stone and brick is presented. 8 different European substrates were selected and 4 commercial anti-graffiti of different chemical nature were applied on these substrates. The variations of their hydric properties and aspect (colour and gloss) with regard to the untreated substrates were later studied in the laboratory.
 
 The results obtained permitted to assess the suitability of 4 of the main types of chemical formulations employed to be used as anti-graffiti. This study concludes that the sacrificial anti-graffiti with polymeric paraffins in its composition presents the lowest reductions of the hydric properties of the studied substrates, being also the variations in colour the least perceptible.<br><br>En este artículo se presenta un estudio comparativo del comportamiento de diferentes tipos de anti-graffiti comerciales sobre piedra natural y ladrillo. Para ello se seleccionaron 8 tipos de sustratos porosos de diferentes países europeos, sobre los que se aplicaron 4 anti-graffiti de distinta naturaleza química. Posteriormente se estudiaron las variaciones en sus propiedades hídricas y de aspecto (color y brillo) con respecto a los sustratos no tratados, en el laboratorio.
 
 Los resultados obtenidos han permitido evaluar la idoneidad de 4 de los principales tipos de formulaciones químicas más frecuentemente utilizadas como anti-graffiti sobre sustratos porosos. El estudio concluye que el antigraffiti de sacrificio de composición parafínica es el producto que reduce en menor medida las propiedades hídricas de los sustratos porosos estudiados, y que menores cambios de color produce en los mismos

Topics: porous substrates, surface treatments, antigraffiti coatings, hydric properties, colour, gloss, sustratos porosos, tratamientos superficiales, recubrimientos anti-grafiti, propiedades hídricas, color, brillo, Materials of engineering and construction. Mechanics of materials, TA401-492, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Technology, T, DOAJ:Materials, DOAJ:Technology and Engineering
Publisher: Consejo Superior de Investigaciones Científicas
Year: 2010
OAI identifier: oai:doaj.org/article:b25424a72afd4834829fd8edb7435ece
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