The effectiveness of ethyl silicate as consolidating and protective coating to extend the durability of earthen plasters
| Autor: | Marcos Lanzón, Victoria E. García-Vera, Antonio José Tenza-Abril |
|---|---|
| Přispěvatelé: | Universidad de Alicante. Departamento de Ingeniería Civil, Tecnología de Materiales y Territorio (TECMATER) |
| Rok vydání: | 2020 |
| Předmět: |
2203.04 Microscopia Electrónica
Absorption of water Materials science Porosidad Capillary action Scanning electron microscope 0211 other engineering and technologies Acid resistance 020101 civil engineering 02 engineering and technology engineering.material Durability 2502.02 Climatología Aplicada 0201 civil engineering law.invention chemistry.chemical_compound Revestimientos - Construcción Coating Optical microscope Patrimonio histórico law 021105 building & construction General Materials Science Ingeniería de la Construcción Composite material Porosity Microstructure Cloruros Civil and Structural Engineering 2303.06 Compuestos de Cloro Ethyl silicate Ensayos (propiedades o materiales) 3312.08 Propiedades de Los Materiales TEOS Building and Construction Mantenimiento de edificios 3313.04 Material de Construcción Lluvia ácida Silicate Earthen plasters chemistry 3312.12 Ensayo de Materiales engineering Consolidation Durabilidad 3305.26 Edificios Públicos |
| Zdroj: | RIARTE Consejo General de la Arquitectura Técnica de España (CGATE) |
| DOI: | 10.1016/j.conbuildmat.2019.117445 |
| Popis: | In the heritage protection, one of the most interesting scenarios is the preservation of the original materials. In this case, the surfaces are generally treated to consolidate them. The aim of this paper is to evaluate the effect of ethyl silicate coatings on surface consolidation, water absorption and porosity of earthen materials. Peeling tests, water absorption measurements (capillary and Karsten) and textural alteration analyses were conducted by optical microscopy. In addition, the protective role of the ethyl silicate coatings against rainwater, HCl rain and H2SO4 rain was evaluated to compare the durability of coated and control samples. It was found that ethyl silicate substantially improved the above properties as well as microstructural features of the samples. Scanning Electron Microscopy and EDX mapping revealed the coating was not regularly spread on the surface. Despite this, Mercury Intrusion Porosimetry tests showed the total porosity of samples coated with ethyl silicate was clearly reduced. This study is part of the project entitled NanoHeritage: development, application and characterisation of novel consolidating coatings for Heritage Conservation - funded by Fundación Séneca, Regional Government of Murcia, Spain. |
| Databáze: | OpenAIRE |
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