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Book Chapter

The church of Santa Engrácia (the National Pantheon, Lisbon, Portugal): building campaigns, conservation works, stones and pathologies

By
C. Figueiredo
C. Figueiredo
Centre of Petrology and Geochemistry, CEPGIST, IST, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
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L. Aires-Barros
L. Aires-Barros
Centre of Petrology and Geochemistry, CEPGIST, IST, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
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M. J. Neto
M. J. Neto
Faculdade de Letras, Lisbon, Portugal
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Published:
January 01, 2010

Abstract

A study of the different building campaigns, restoration works, pathologies and stones used through time in the Church of Santa Engrácia (Portuguese National Pantheon) is presented. The changing fortunes of the monument make it a useful case study in terms of building stone use and decay. This bold baroque project, begun in the seventeenth century, remained without a roof until the 1960s. At that time the leader of the conservative regime of Estado Novo (‘New State’), António de Oliveira Salazar, decided to complete the building as a national pantheon to provide a memorial to some of the personalities of Portuguese history. A complementary approach between the geosciences and history of art identified the ancient and more recent quarries, and the main stone types, used during its different building campaigns and restoration/conservation works. The local stone variety ‘lioz’, extracted in the area around Lisbon, was the main type used. An overview of the current knowledge of the chemical, physical and mechanical characteristics of these stones is now available. Besides new data on the typology, causes and processes of the major weathering forms observed inside and outside the building, the building campaigns and restoration works are also presented.

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Geological Society, London, Special Publications

Limestone in the Built Environment: Present-Day Challenges for the Preservation of the Past

B. J. Smith
B. J. Smith
Queen's University, Belfast, UK
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M. Gomez-Heras
M. Gomez-Heras
Queen's University, Belfast, UK Universidad Complutense de Madrid; Instituto de GeologÓa EconÓmica (CSIC-UCM), Spain
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H. A. Viles
H. A. Viles
Oxford University Centre for the Environment, UK
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J. Cassar
J. Cassar
University of Malta, Malta
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Geological Society of London
Volume
331
ISBN electronic:
9781862395794
Publication date:
January 01, 2010

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