Fernandina wall of Lisbon: mineralogical and chemical characterization of rammed earth and masonry mortars

Infante Gomes, Ricardo, Santos Silva, António, Gomes, Leandro and Faria, Paulina (2022) Fernandina wall of Lisbon: mineralogical and chemical characterization of rammed earth and masonry mortars. Minerals, 12 (2). p. 241. ISSN 2075-163X [Article]

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Abstract (in English)

This paper aims to provide information on rammed earth and masonry mortars of the Fernandina defensive Wall of Lisbon, Portugal, which was built in the second half of the 14th century. No previous information exists concerning the materials and construction techniques used in this defensive structure, which is essential to increase knowledge and to define requirements for a reliable conservation. An experimental campaign was carried out on samples extracted in nine different sections of this structure, which were analyzed by X-ray diffraction, thermogravimetry and wet chemical analysis. Calcitic lime was employed as a binder in the stone masonry bedding mortars and was also identified in the rammed earth samples. The results obtained allowed us to verify the use of different binders and aggregates, with heterogeneous binder/aggregate ratios, in different sections of theWall. To reduce time for lime preparation and to achieve a durable lime matrix, most probably quicklime was used and hydrated together with the moistened earth to produce rammed earth and masonry bedding mortars.

Item Type: Article
Authors:
Authors
Email
Infante Gomes, Ricardo
UNSPECIFIED
Santos Silva, António
ssliva@lnec.pt
Gomes, Leandro
UNSPECIFIED
Faria, Paulina
paulina.faria@fct.unl.pt
Languages: English
Keywords: defensive structure; stone masonry bedding mortar; rammed earth; air lime; architectural heritage; structures of buildings; walls
Subjects: C. ARCHITECTURE > 05. Building techniques
C. ARCHITECTURE > 06. Structures of buildings
E. CONSERVATION AND RESTORATION > 03. Monuments
F. SCIENTIFIC TECHNIQUES AND METHODOLOGIES OF CONSERVATION > 13. Chemical analysis
Name of monument, town, site, museum: Fernandina Defensive Wall of Lisbon, Portugal
Volume: 12
Number: 2
ISSN: 2075-163X
Depositing User: Prof. Paulina Faria
Date Deposited: 13 Mar 2022 21:53
Last Modified: 19 Mar 2024 10:21
URI: https://openarchive.icomos.org/id/eprint/2581

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