Materiales de Construcción, Vol 62, No 308 (2012)

Characterization of mudejar mortars from St. Gil Abbot church (Zaragoza, Spain): Investigation of the manufacturing technology of ancient gypsum mortars


https://doi.org/10.3989/mc.2012.07311

J. Igea
Departamento de Ciencias de la Tierra. Universidad de Zaragoza, Spain

P. Lapuente
Departamento de Ciencias de la Tierra. Universidad de Zaragoza, Spain

S. Martínez-Ramírez
Instituto de Estructura de la Materia-CSIC, Madrid; Instituto de ciencias de la construcción Eduardo Torroja-CSIC, Madrid, Spain

M. T. Blanco-Varela
Instituto de ciencias de la construcción Eduardo Torroja-CSIC, Madrid, Spain

Abstract


This work has been focused on the investigation of the technological procedure of Mudejar mortars applied to the characterization of a group of unaltered samples from an example church of Mudejar architecture of Aragon. The research was carried out using multi-analytical techniques including petrographic study, chemistry and mineralogical analysis. All mortars present a homogeneous composition. The binder is made up of a mixture of gypsum and a very low proportion of lime, while the main components of the aggregate are gypsum and carbonate rock fragments, both in a different thermal state of decomposition. The results have proved that both, binder and aggregates display the same composition in these mortars. These aggregates are the by-product of a grinding process of the previously burnt raw materials which have had a positive influence on the properties of the mortars in improving their quality.

Keywords


San Gil; Mudejar; Gypsum mortar; Lime; Characterization; Technological procedure

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