Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plasters

Detalhes bibliográficos
Autor(a) principal: Santos, Tânia
Data de Publicação: 2020
Outros Autores: Gomes, Maria Idália, Silva, António Santos, Ferraz, Eduardo, Faria, Paulina
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.26/38422
Resumo: It is important to ensure indoor comfort by passive methods, avoiding mechanical equipment that has energy costs. To assess plasters common efficiency but also its contribution as moisture buffers, five different plastering mortars, including unstabilized and stabilized earth-based plasters, gypsum and cement-based pre-mixed plasters, were analyzed and their chemical, mechanical and hygroscopic characteristics compared. The materials and mortars were analyzed by X-ray diffraction and simultaneous thermal analysis. Linear shrinkage, dry bulk density, dynamic modulus of elasticity, flexural and compressive strengths, dry abrasion resistance, surface cohesion, surface hardness and sorption and desorption of mortars and plasters were also evaluated. The mechanical strength of earthen mortars is lower than gypsum and cement-based mortars. However, earth plasters show the highest hygroscopicity, acting as moisture passive buffers, improving thermal comfort and contributing to occupantś health.
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spelling Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plastersAbrasionAir limeCohesionCompression and flexural strengthLaboratory testingMortarSorptionXRDTGA/DSCIt is important to ensure indoor comfort by passive methods, avoiding mechanical equipment that has energy costs. To assess plasters common efficiency but also its contribution as moisture buffers, five different plastering mortars, including unstabilized and stabilized earth-based plasters, gypsum and cement-based pre-mixed plasters, were analyzed and their chemical, mechanical and hygroscopic characteristics compared. The materials and mortars were analyzed by X-ray diffraction and simultaneous thermal analysis. Linear shrinkage, dry bulk density, dynamic modulus of elasticity, flexural and compressive strengths, dry abrasion resistance, surface cohesion, surface hardness and sorption and desorption of mortars and plasters were also evaluated. The mechanical strength of earthen mortars is lower than gypsum and cement-based mortars. However, earth plasters show the highest hygroscopicity, acting as moisture passive buffers, improving thermal comfort and contributing to occupantś health.This study was supported by Operational Programme Competitiveness and Internationalization (COMPETE 2020), by FEDER funds through the Regional Operational Programs of Lisbon and of Center (Lisbon 2020, Center 2020) and by national funds through the Portuguese Foundation for Science and Technology (FCT) in the scope of the project SAICT/23349/2016: INDEEd – Indoor air quality regulation through the usage of eco-efficient mortars and project PTDC/EPH-PAT/4684/2014: DB-HERITAGE – Database of building materials with historical and heritage interest. Acknowledgments are due to Aldeias de Pedra, Embarro, Secil Argamassas and Sival Companies for providing the materials and pre-mixed mortars.CENTRO-01-0145-FEDER-023349ElsevierRepositório ComumSantos, TâniaGomes, Maria IdáliaSilva, António SantosFerraz, EduardoFaria, Paulina2021-12-22T23:40:32Z2020-09-102021-12-22T19:42:44Z2020-09-10T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.26/38422engcv-prod-175368810.1016/j.conbuildmat.2020.119222metadata only accessinfo: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:RCAAP2023-10-20T10:52:48Zoai:comum.rcaap.pt:10400.26/38422Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:37:15.727503Repositório 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 Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plasters
title Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plasters
spellingShingle Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plasters
Santos, Tânia
Abrasion
Air lime
Cohesion
Compression and flexural strength
Laboratory testing
Mortar
Sorption
XRD
TGA/DSC
title_short Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plasters
title_full Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plasters
title_fullStr Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plasters
title_full_unstemmed Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plasters
title_sort Comparison of mineralogical, mechanical and hygroscopic characteristic of earthen, gypsum and cement-based plasters
author Santos, Tânia
author_facet Santos, Tânia
Gomes, Maria Idália
Silva, António Santos
Ferraz, Eduardo
Faria, Paulina
author_role author
author2 Gomes, Maria Idália
Silva, António Santos
Ferraz, Eduardo
Faria, Paulina
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Repositório Comum
dc.contributor.author.fl_str_mv Santos, Tânia
Gomes, Maria Idália
Silva, António Santos
Ferraz, Eduardo
Faria, Paulina
dc.subject.por.fl_str_mv Abrasion
Air lime
Cohesion
Compression and flexural strength
Laboratory testing
Mortar
Sorption
XRD
TGA/DSC
topic Abrasion
Air lime
Cohesion
Compression and flexural strength
Laboratory testing
Mortar
Sorption
XRD
TGA/DSC
description It is important to ensure indoor comfort by passive methods, avoiding mechanical equipment that has energy costs. To assess plasters common efficiency but also its contribution as moisture buffers, five different plastering mortars, including unstabilized and stabilized earth-based plasters, gypsum and cement-based pre-mixed plasters, were analyzed and their chemical, mechanical and hygroscopic characteristics compared. The materials and mortars were analyzed by X-ray diffraction and simultaneous thermal analysis. Linear shrinkage, dry bulk density, dynamic modulus of elasticity, flexural and compressive strengths, dry abrasion resistance, surface cohesion, surface hardness and sorption and desorption of mortars and plasters were also evaluated. The mechanical strength of earthen mortars is lower than gypsum and cement-based mortars. However, earth plasters show the highest hygroscopicity, acting as moisture passive buffers, improving thermal comfort and contributing to occupantś health.
publishDate 2020
dc.date.none.fl_str_mv 2020-09-10
2020-09-10T00:00:00Z
2021-12-22T23:40:32Z
2021-12-22T19:42:44Z
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://hdl.handle.net/10400.26/38422
url http://hdl.handle.net/10400.26/38422
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv cv-prod-1753688
10.1016/j.conbuildmat.2020.119222
dc.rights.driver.fl_str_mv metadata only access
info:eu-repo/semantics/openAccess
rights_invalid_str_mv metadata only access
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)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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