Publicomos

Réf.

43285

Type

article

Titre

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

Langues

English

Auteurs

Infante Gomes, Ricardo / Santos Silva, António / Gomes, Leandro / Faria, Paulina

Maison d'édition

MDPI

Date

2022

Pages

18 p.

Addenda

Article n° 241

Titre de la revue

Minerals

Vol. & n°

v. 12 n. 2

ISSN

2075-163X

Mots-clés

fortified towns / stone / masonry / rammed earth / mortar / air lime / architectural heritage / structures of buildings / walls / building techniques / conservation of historic monuments / chemical analysis

Pays mentionnés

Portugal

Monuments et sites

Fernandina Defensive Wall of Lisbon, Portugal

Résumé en anglais

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 andwas 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 oftheWall. 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.

DOI

https://doi.org/10.3390/min12020241

Document joint

minerals-12-00241-v2.pdf

Licence

Creative Commons Attribution (BY)