The whole and the parts: can lime coatings enhance the drying of salt laden materials?
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://repositorio.lnec.pt:8080/jspui/handle/123456789/1005857 |
Resumo: | Lime 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. |
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The whole and the parts: can lime coatings enhance the drying of salt laden materials?Lime coatingLimewashArchitectural heritageHistorical buildingsDryingPorous building materialsSoluble saltsSodium chlorideSodium sulphateLime 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.Elsevier2014-02-28T10:56:18Z2014-10-20T15:58:09Z2017-04-12T16:25:34Z2014-01-01T00:00:00Z2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1005857engGonçalves, T. D.Brito, V.Musacchi, J.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-13T03:03:27Zoai:localhost:123456789/1005857Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:38:52.971186Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
The whole and the parts: can lime coatings enhance the drying of salt laden materials? |
title |
The whole and the parts: can lime coatings enhance the drying of salt laden materials? |
spellingShingle |
The whole and the parts: can lime coatings enhance the drying of salt laden materials? Gonçalves, T. D. Lime coating Limewash Architectural heritage Historical buildings Drying Porous building materials Soluble salts Sodium chloride Sodium sulphate |
title_short |
The whole and the parts: can lime coatings enhance the drying of salt laden materials? |
title_full |
The whole and the parts: can lime coatings enhance the drying of salt laden materials? |
title_fullStr |
The whole and the parts: can lime coatings enhance the drying of salt laden materials? |
title_full_unstemmed |
The whole and the parts: can lime coatings enhance the drying of salt laden materials? |
title_sort |
The whole and the parts: can lime coatings enhance the drying of salt laden materials? |
author |
Gonçalves, T. D. |
author_facet |
Gonçalves, T. D. Brito, V. Musacchi, J. |
author_role |
author |
author2 |
Brito, V. Musacchi, J. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Gonçalves, T. D. Brito, V. Musacchi, J. |
dc.subject.por.fl_str_mv |
Lime coating Limewash Architectural heritage Historical buildings Drying Porous building materials Soluble salts Sodium chloride Sodium sulphate |
topic |
Lime coating Limewash Architectural heritage Historical buildings Drying Porous building materials Soluble salts Sodium chloride Sodium sulphate |
description |
Lime 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. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-02-28T10:56:18Z 2014-10-20T15:58:09Z 2014-01-01T00:00:00Z 2014 2017-04-12T16:25:34Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1005857 |
url |
http://repositorio.lnec.pt:8080/jspui/handle/123456789/1005857 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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