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DIGITAL.CSIC
Article . 2007 . Peer-reviewed
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Investigación arqueométrica de los ladrillos de las antiguas murallas defensivas de la ciudad de Pavía (norte de Italia)

Authors: Setti, M.; Nicola, C.; López-Galindo, A.; Lodola, S.; Maccabruni, C.; Veniale, F.;

Investigación arqueométrica de los ladrillos de las antiguas murallas defensivas de la ciudad de Pavía (norte de Italia)

Abstract

Se investigan ladrillos recogidos en las murallas defensivasde la histórica ciudad de Pavía (norte de Italia), quefueron construidas en tiempos romanos (no establecidos)y “españoles” (siglos XVI y XVII).En base al color, composición química tanto total comopuntual, asociaciones mineralógicas y características texturales,se concluye que se utilizó una materia prima similaren ambas épocas, con algunas particularidades: granulometríamás fina en los romanos, adición de carbonatomolido y chamota en los “españoles”. Por su parte, laporosidad es mayor en los ladrillos “españoles”. El ampliorango de temperaturas de cocción observado para estosúltimos debe estar relacionado con los distintos usos paralos cuales fueron destinados. La presencia esporádicade maghemita se discute, además, en función del tipo deatmósfera imperante en el horno de cocción. El colorde los ladrillos “españoles” es más claro, como correspondea su mayor contenido en carbonatos y menor temperaturade cocción. Estas características ejercen una notableinfluencia en la resistencia a la meteorización de losdistintos tipos de ladrillos y deben, ser tenidas en cuenta ala hora de elaborar posibles planes de restauración.

A study was conducted on bricks sampled from the defence walls around the historic town of Pavia (northern Italy) erected during Roman (uncertain) and “Spanish” (sixteenth-seventeenth centuries) times. An analysis of colour, macro- and micro-chemical composition, mineralogical clusters and structural-textural features showed that similar raw materials were used in the manufacture of these bricks, although certain variations were identified: particle size is finer in Roman bricks, while the “Spanish” version contains ground carbonate and “chamotte” additives. The “Spanish” bricks, fired at lower temperatures, are more porous. The wide range of firing temperatures used to make “Spanish” bricks was very likely related to the intended use. The sporadic presence of maghemite is discussed in the context of the atmosphere prevailing in the kilns. The “Spanish” bricks are lighter in colour as a result of their carbonate content and lower firing temperature. These characteristics, which affect the weather resistance of the different types of brick, should be taken into account in restoration work.

Nos sentimos en deuda con la Dra. Donata Vicini, directora del Museo Cívico de Pavía, por las facilidades prestadas para la consulta de la documentación histórica, y con el Dr. Federico Carò (Departamento de Ciencias de la Tierra, Universidad de Pavía) por su ayuda durante el proceso de análisis de imagen. Distintos comentarios realizados por el Dr. Giuseppe Cultrone (Departamento de Mineralogía y Petrología, Universidad de Granada)han mejorado el texto.

Peer reviewed

Country
Spain
Related Organizations
Keywords

Pavía, Color, Composición química, Ladrillos, Murallas romanas españolas

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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