Colored limewash paintings in Alentejo (part 1): Pigments' identification and stratigraphic analysis (in 2004-2006)

An experimental campaign took place between 2004 and 2006 in Alentejo in order to identify the pigments used in the traditional limewash and analyze pictorial techniques. The samples were collected in the exterior finishes of buildings localized in the historical centers of 47 municipalities (distri...

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Main Authors: M. Gil, A. I. Seruya, J. Aguiar, A. Candeias, J. C. Frade, S. Valadas, P. Alves, I. Ribeiro
Format: Article
Language:English
Published: Associação Profissional de Conservadores - Restauradores de Portugal 2009-01-01
Series:Conservar Património
Subjects:
Online Access:https://doi.org/10.14568/cp10_3
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author M. Gil
A. I. Seruya
J. Aguiar
A. Candeias
J. C. Frade
S. Valadas
P. Alves
I. Ribeiro
author_facet M. Gil
A. I. Seruya
J. Aguiar
A. Candeias
J. C. Frade
S. Valadas
P. Alves
I. Ribeiro
author_sort M. Gil
collection DOAJ
description An experimental campaign took place between 2004 and 2006 in Alentejo in order to identify the pigments used in the traditional limewash and analyze pictorial techniques. The samples were collected in the exterior finishes of buildings localized in the historical centers of 47 municipalities (distributed among the districts of Évora, Beja, Portalegre and Setúbal). Its analysis was based on micro-chemical tests, supplemented with optical microscopic observations, Fourier transformed infrared spectroscopy and X-ray diffractometry. Results show that, contrary to the present, red pigments based on Fe (III) compounds were predominant in the lime palette of Alentejo and reveal several technical details such as the mixes between several pigments and the use of chromatic layers of variable thickness, that, in many cases, are very different from the system of transparent glazes.
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spelling doaj.art-7e543142f7a04f80bf68d7a816a384a42022-12-22T00:13:49ZengAssociação Profissional de Conservadores - Restauradores de PortugalConservar Património1646-043X2182-99422009-01-0110193810.14568/cp10_310_3Colored limewash paintings in Alentejo (part 1): Pigments' identification and stratigraphic analysis (in 2004-2006)M. Gil0A. I. Seruya1J. Aguiar2A. Candeias3J. C. Frade4S. Valadas5P. Alves6I. Ribeiro7Departamento de Conservação e Restauro, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Monte da Caparica, 2829-516 CaparicaDepartamento de Conservação e Restauro, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, Monte da Caparica, 2829-516 CaparicaFaculdade de Arquitectura, Universidade Técnica de Lisboa, Rua Sá Nogueira, Pólo Universitário do Alto da Ajuda, 1349-055 LisboaDepartamento de Química, Centro de Química de Évora, Universidade de Évora, Rua Romão Ramalho, 59, ÉvoraLaboratório de Conservação e Restauro, Instituto dos Museus e da Conservação, (IMC-LCR), R. das Janelas Verdes, 37,1249-018 LisboaLaboratório de Conservação e Restauro, Instituto dos Museus e da Conservação, (IMC-LCR), R. das Janelas Verdes, 37,1249-018 LisboaLaboratório de Conservação e Restauro, Instituto dos Museus e da Conservação, (IMC-LCR), R. das Janelas Verdes, 37,1249-018 LisboaLaboratório de Conservação e Restauro, Instituto dos Museus e da Conservação, (IMC-LCR), R. das Janelas Verdes, 37,1249-018 LisboaAn experimental campaign took place between 2004 and 2006 in Alentejo in order to identify the pigments used in the traditional limewash and analyze pictorial techniques. The samples were collected in the exterior finishes of buildings localized in the historical centers of 47 municipalities (distributed among the districts of Évora, Beja, Portalegre and Setúbal). Its analysis was based on micro-chemical tests, supplemented with optical microscopic observations, Fourier transformed infrared spectroscopy and X-ray diffractometry. Results show that, contrary to the present, red pigments based on Fe (III) compounds were predominant in the lime palette of Alentejo and reveal several technical details such as the mixes between several pigments and the use of chromatic layers of variable thickness, that, in many cases, are very different from the system of transparent glazes.https://doi.org/10.14568/cp10_3Limewash paintingsInorganic pigmentPictorial techniquesConservation
spellingShingle M. Gil
A. I. Seruya
J. Aguiar
A. Candeias
J. C. Frade
S. Valadas
P. Alves
I. Ribeiro
Colored limewash paintings in Alentejo (part 1): Pigments' identification and stratigraphic analysis (in 2004-2006)
Conservar Património
Limewash paintings
Inorganic pigment
Pictorial techniques
Conservation
title Colored limewash paintings in Alentejo (part 1): Pigments' identification and stratigraphic analysis (in 2004-2006)
title_full Colored limewash paintings in Alentejo (part 1): Pigments' identification and stratigraphic analysis (in 2004-2006)
title_fullStr Colored limewash paintings in Alentejo (part 1): Pigments' identification and stratigraphic analysis (in 2004-2006)
title_full_unstemmed Colored limewash paintings in Alentejo (part 1): Pigments' identification and stratigraphic analysis (in 2004-2006)
title_short Colored limewash paintings in Alentejo (part 1): Pigments' identification and stratigraphic analysis (in 2004-2006)
title_sort colored limewash paintings in alentejo part 1 pigments apos identification and stratigraphic analysis in 2004 2006
topic Limewash paintings
Inorganic pigment
Pictorial techniques
Conservation
url https://doi.org/10.14568/cp10_3
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