XIII DBMC – 12th International Conference on Durability of Building Materials and Components,2-5 September 2014, Universidade de São Paulo, São Paulo, BrazilMortar coatings are usually the first elements to deteriorate, once they are the most exposed construction elements. Taking into account their protective function, it is easily understood the importance of the development of a correct conservation / rehabilitation intervention.
Old mortars were essentially air lime based and their rehabilitation must be executed with compatible mortars. That way they not only recover the protective function, but also contribute to maintain the integrity of the whole wall-render element and the aesthetic image of the building.
As it is known, many old lime-based mortars had ceramic residues in their composition, which are very abundant residues, particularly in Portugal. Thus, in an attempt to combine the interest of reusing waste ceramic, reducing the amounts that are typically landfilled, with the technical benefits that they can bring to rehabilitation mortars, an experimental research has been developed, at the University of Coimbra, in collaboration with the NOVA University of Lisbon, on the behavior of lime mortars with incorporation of ceramic residues.
In this paper a comparison between air lime mortars with ceramic residues with volumetric proportions of 1:3 and 1:2 (binder:aggregate) will be presented, showing the advantages of the reintroduction of the ceramic residues into the productive chain. Studied mortars revealed a quite satisfying behavior as the inclusion of ceramic residues may improve the characteristics of common air lime mortars.EXPL/ECM-COM/0928/2012 - Incorporation of ceramic residues in repair mortars (Fundação para a Ciência e Tecnologia) / EMSURE - Energy and Mobility for SUstainable REgions (CENTRO-07-0224-FEDER-002004
