In order to prepare conservation mortars, based on natural inorganic binders, with an acceptable degree of reversibility, high compatibility with the original mosaic materials, negligible concentration of soluble salts, and good durability in a humid environment, several hydraulic limes were analysed. This study showed that only the so-called natural hydraulic limes (NHL, European Standard EN459-1), in spite of anomalous high concentration of CaCO3, are suitable for preparing conservation mortars. Subsequently the composition and mechanical properties of various NHL mortars were identified. The mortar with the best characteristics was succesfully tested for re-laying a mosaic on a movable support.
The study of hydraulic lime mortars for the conservation of mosaics
M Macchiarola;
2008
Abstract
In order to prepare conservation mortars, based on natural inorganic binders, with an acceptable degree of reversibility, high compatibility with the original mosaic materials, negligible concentration of soluble salts, and good durability in a humid environment, several hydraulic limes were analysed. This study showed that only the so-called natural hydraulic limes (NHL, European Standard EN459-1), in spite of anomalous high concentration of CaCO3, are suitable for preparing conservation mortars. Subsequently the composition and mechanical properties of various NHL mortars were identified. The mortar with the best characteristics was succesfully tested for re-laying a mosaic on a movable support.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
