Effect of conservation treatments on heritage stone. Characterisation of decay processes in a case study

Preliminary studies are an imperative when determining the impact of conservation treatments on historical materials. The Romanesque apse on a church at Talamanca de Jarama, Madrid, Spain, whose dolostone was severely decayed by rainwater and salts, was treated in the past with substances that ravag...

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Detalhes bibliográficos
Autores: Varas, María José, Pérez-Monserrat, Elena M., Vázquez Calvo, M. Carmen, Fort González, Rafael
Tipo de documento: artigo
Estado:Versión enviada para evaluación y publicación
Data de publicação:2015
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/120895
Acesso em linha:http://hdl.handle.net/10261/120895
Access Level:Acceso aberto
Palavra-chave:Dolostone
Conservation treatments
Cements
Synthetic resins
Architectural Heritage
Decay
Petrological techniques
Descrição
Resumo:Preliminary studies are an imperative when determining the impact of conservation treatments on historical materials. The Romanesque apse on a church at Talamanca de Jarama, Madrid, Spain, whose dolostone was severely decayed by rainwater and salts, was treated in the past with substances that ravaged the restored area. Petrological techniques showed that salts leached out of the cement under the roof onto the stone cornice whose surface had been coated with synthetic resins. During evaporation, the salts precipitated in the stone and underneath the resin, inducing blistering, fissuring, flaking, scaling and detachment of part of the restored decorative elements.