Rheology and microstructure of lime patty: implications in the design of mortars for conservation purposes

• Autores: A. Luque, Carlos Rodríguez Navarro
• Localización: IX Congreso Internacional de Rehabilitación del Patrimonio Arquitectónico y Edificación: (9. 2008. Sevilla), Vol. 1, 2008, ISBN 978846123459z, págs. 153-158
• Idioma: español
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• Resumen

  • In the last decades, the need of compatible repair materials for the conservation of cultural heritage has resulted in the resurgence of lime as the binder of choice in restoration mortars.

    One of the most well-known rheological properties of lime putty is its excellent plasticity. This is the most desirable property of a binder in the fresh state and has a decisive effect on its performance. Therefore, the rheological characterization of lime putties is crucial, not only from a scientific but also from a conservation-oriented point of view. Here the rheological properties of traditional slaked lime putty and their evolution upon aging have been fully characterized. The results of the rheological study have been interpreted in terms of the structural characteristics of the Ca(OH)2 suspension. This study may aid in the selection of the most suitable putty (i.e., with the best rheological properties) to be used in mortar preparation as well as the optimal aging time for its application in architectural conservation.