Comparative analysis of permeability values of traditional aerial lime mortars for preventive conservation

Author(s): Ana González-Serrano, Reyes Rodríguez-García, Esther Ontiveros-Ortega
Paper category: Proceedings
Book title: Proceedings of the 5th Historic Mortars Conference
Editor(s): José Ignacio Álvarez, José María Fernández, Íñigo Navarro, Adrián Durán, Rafael Sirera
ISBN: 978-2-35158-221-3
e-ISBN: 978-2-35158-222-0
Publisher: RILEM Publications SARL
Publication year: 2019
Pages: 1056-1067
Total Pages: 11
Language : English

Abstract: The suitable materials defined the influence of aerial lime characteristics in water vapour permeability capacity in pre-dosed mortars of powder and in putty lime as traditional construction permeable material for its application in render and plaster mortars in Cultural Heritage conservation. In this study have been elaborated selected mortars sample following UNE-EN 1015-19 that determines the water vapour permeability to these mortars. The influence of the porosity and the carbonation process in the permeability coefficient measured in different periods of time, until 180 days, addition to considering the importance of the type of aggregate and relation binder/water in its properties. This study establishes the values that coincide and significant variations in the characterization for every mortar. Tests results determined the water vapour exchanges, allow for analysed the singular circumstances and indicated the permeability behaviours of the different mortars selected. After 90 days, all the mortars reach equilibrium in terms of this permeability values and it is the SPL mortars that retain the most water. It is possible to conclude that these aerial limes guarantee the renders and plaster mortars breathability with a controlled dosing.

Online publication : 2019
Publication type : full_text
Public price (Euros) : 0.00