Rayón, E.; Arrieta, MP.; Pasies -Oviedo, T.; López-Martínez, J.; Jorda Moret, JL. (2018). Enhancing the mechanical features of clay surfaces by the absorption of nano-SiO2 particles in aqueous media. Case of study on Bronze Age clay objects. Cement and Concrete Composites. 93:107-117. https://doi.org/10.1016/j.cemconcomp.2018.07.005
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/123474
Title:
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Enhancing the mechanical features of clay surfaces by the absorption of nano-SiO2 particles in aqueous media. Case of study on Bronze Age clay objects
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Author:
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Rayón, E.
Arrieta, Marina Patricia
Pasies -Oviedo, Trinidad
López-Martínez, Juan
Jorda Moret, Jose Luis
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UPV Unit:
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Universitat Politècnica de València. Departamento de Ingeniería Mecánica y de Materiales - Departament d'Enginyeria Mecànica i de Materials
Universitat Politècnica de València. Departamento de Conservación y Restauración de Bienes Culturales - Departament de Conservació i Restauració de Béns Culturals
Universitat Politècnica de València. Instituto de Tecnología de Materiales - Institut de Tecnologia de Materials
Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química
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Issued date:
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Abstract:
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[EN] Nanoparticles are known to be able to enhance the performance of low dense materials, achieving the small intergranular spaces to further interact with the matrix. In this work, a consolidation treatment of an ancient ...[+]
[EN] Nanoparticles are known to be able to enhance the performance of low dense materials, achieving the small intergranular spaces to further interact with the matrix. In this work, a consolidation treatment of an ancient clay material is reported. It is based on the use of silica nanoparticles dispersed in an aqueous medium as a more sustainable approach than those currently used in the conservation field. The effective consolidation has been determined by ensuring an appropriate mechanical surface resistance using the nanoindentation technique as non-destructive measurements. Moreover, the ability of SiO(2 )nanoparticles to fill the microstructure is studied by scanning electron microscopy. As a case report, several low-strength clay fragments dated from the Bronze Age were surface treated with a commercial aqueous suspension of SiO2 nanoparticles that were analyzed by transmission electron microscopy (TEM) displaying dimensions of about 20 nm in diameter. Field Emission Electron Microscopy (FESEM) revealed that nanoparticles filled the inter-granular spaces of the clay, leading to a nanostructured material. The nanoindentation results showed an increase in surface resistance against scratching. Meanwhile, the nanohardness and elastic modulus increased 10 times (from 15 to 150 MPa) and 8 times (from 1 to 8 GPa), respectively due to the nano-SiO2 treatment, confirming the consolidation effect of the nanoparticles.
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Subjects:
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Nanoindentation
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Nanoparticles
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Nano-SiO2
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Heritage
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TEM
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FESEM
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DRX
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Copyrigths:
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Reconocimiento - No comercial - Sin obra derivada (by-nc-nd)
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Source:
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Cement and Concrete Composites. (issn:
0958-9465
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DOI:
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10.1016/j.cemconcomp.2018.07.005
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Publisher:
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Elsevier
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Publisher version:
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http://doi.org/10.1016/j.cemconcomp.2018.07.005
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Project ID:
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info:eu-repo/grantAgreement/MINECO//MAT2014-59242-C2-1-R/ES/TECNICAS AVANZADAS DE PROCESADO PARA SISTEMAS ACTIVOS ENCAPSULADOS/
info:eu-repo/grantAgreement/MINECO//FJCI-2014-20630/ES/FJCI-2014-20630/
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Thanks:
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Authors acknowledge the financial support of Spanish Ministry of Economy and Competitiveness, MAT2014-59242-C2-1-R. Authors also acknowledge the support of Helena Bonet, Director of the Prehistory Museum of Valencia and ...[+]
Authors acknowledge the financial support of Spanish Ministry of Economy and Competitiveness, MAT2014-59242-C2-1-R. Authors also acknowledge the support of Helena Bonet, Director of the Prehistory Museum of Valencia and Ma Jesus de Pedro, conservator of this Museum, and to the Photographic Archive Department. M.P. Arrieta wishes to thank the financial support of MINECO for a Juan de la Cierva (FJCI-2014-20630) contract.
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Type:
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Artículo
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