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dc.contributor.authorGonçalves, T. D.pt_BR
dc.contributor.authorBrito, V.pt_BR
dc.contributor.authorMusacchi, J.pt_BR
dc.identifier.citationTeresa Diaz Gonçalves, Vânia Brito, Jessica Musacchi (2014) The whole and the parts: can lime coatings enhance the drying of salt laden materials? Construction and Building Materials 57, 179–189pt_BR
dc.description.abstractLime coatings are frequent in the architectural heritage. Previous research showed that they can accelerate the drying of porous materials, such as stone and mortars, which could help control the endemic problems of dampness of these constructions. Here, we investigate the effect lime coatings have in presence of soluble salts. The work is based on evaporation tests performed on one lime coating applied on five materials contaminated with solutions of NaCl or Na2SO4. Conclusions could be drawn about: (i) the behavior of the coating; (ii) the salt decay process. It was observed that the coating can, in few cases, still enhance drying when salts are present. However, in comparison to pure water, the drying kinetics is slower, more irregular and shows higher dispersion. Also, it sometimes diverges among specimens of the same material subjected to similar experimental conditions. These chaotic variations are in agreement with the decay patterns and suggest that soluble salts amplify the effects of the natural heterogeneity of porous materials.pt_BR
dc.description.sponsorshipThis work was funded by the Portuguese Foundation for Science and Technology (FCT) under the research project DRYMASS (Ref. PTDC/ECM/100553/2008).pt_BR
dc.subjectLime coatingpt_BR
dc.subjectArchitectural heritagept_BR
dc.subjectHistorical buildingspt_BR
dc.subjectPorous building materialspt_BR
dc.subjectSoluble saltspt_BR
dc.subjectSodium chloridept_BR
dc.subjectSodium sulphatept_BR
dc.titleThe whole and the parts: can lime coatings enhance the drying of salt laden materials?pt_BR
dc.description.commentsWe are thankful to Veerle Cnudde (Ghent University) and Timo G. Nijland (Netherlands Organization for Applied Scientific Research - TNO) for providing the Bentheimer sandstone, and to José Cruz (Lusical) for the air lime. We acknowledge also the support of José Costa, Luís Nunes and Filipa Vidigal for their help with different aspects of the experimental work.pt_BR
dc.description.magazineConstruction and Building Materialspt_BR
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