Mechanical properties of lime–cement masonry mortars in their early ages
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/68217 |
Resumo: | Lime–cement mortars are often used in restoration of existing buildings (especially twentieth century onward) as well as new constructions, in order to combine the individual strengths of either type of binder. Despite the knowledge that mortars have a significant impact on the non-linear mechanical behaviour of masonry from the earliest moments of construction, literature that systematically quantifies the impact of adding lime to cement mortars, or vice versa is scarce and scattered. This work is therefore focussed on bridging the research gap that exists in lime–cement masonry mortars with regard to their mechanical properties in the early ages (up to 7 days of curing). Five different mix compositions have been studied with 1:3 binder-aggregate ratio and 10% to 75% lime content in the binder, both by volume. Changes in properties like mechanical strength and stiffness along with ultrasound pulse velocity have been quantified, correlated and associated with change in quantity of lime in the binder (by volume) of the mortar. It was found that every 10% increase in the quantity of lime in the binder led to a 14% decrease in mechanical strength and a corresponding 12% decrease in stiffness, at 7 days of curing age. E-modulus was found to evolve faster than flexural strength, which in turn was found to evolve faster than compressive strength. Impact of curing temperature and the concept of activation energy has been addressed for the mix 1:1:6 (Cement:Lime:Sand). |
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Mechanical properties of lime–cement masonry mortars in their early agesLime-cement masonry mortarsMechanical strengthStiffnessEarly-agesUltrasound pulse velocity (UPV)Curing temperature and activation energyEngenharia e Tecnologia::Engenharia CivilScience & TechnologyLime–cement mortars are often used in restoration of existing buildings (especially twentieth century onward) as well as new constructions, in order to combine the individual strengths of either type of binder. Despite the knowledge that mortars have a significant impact on the non-linear mechanical behaviour of masonry from the earliest moments of construction, literature that systematically quantifies the impact of adding lime to cement mortars, or vice versa is scarce and scattered. This work is therefore focussed on bridging the research gap that exists in lime–cement masonry mortars with regard to their mechanical properties in the early ages (up to 7 days of curing). Five different mix compositions have been studied with 1:3 binder-aggregate ratio and 10% to 75% lime content in the binder, both by volume. Changes in properties like mechanical strength and stiffness along with ultrasound pulse velocity have been quantified, correlated and associated with change in quantity of lime in the binder (by volume) of the mortar. It was found that every 10% increase in the quantity of lime in the binder led to a 14% decrease in mechanical strength and a corresponding 12% decrease in stiffness, at 7 days of curing age. E-modulus was found to evolve faster than flexural strength, which in turn was found to evolve faster than compressive strength. Impact of curing temperature and the concept of activation energy has been addressed for the mix 1:1:6 (Cement:Lime:Sand).EuLA - European Lime Association; FCT Phd Scholarship of 1st author. Portuguese Foundation for Science and Technology (FCT) to the Research Project PTDC/ECM-EST/1056/2014 (POCI-01-0145-FEDER-016841), as well to the Research Unit ISISE (POCI-01-0145-FEDER-007633)SpringerUniversidade do MinhoRamesh, MeeraAzenha, MiguelLourenço, Paulo B.2019-012019-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/68217engRamesh, M., Azenha, M., & Lourenço, P. B. (2019). Mechanical properties of lime–cement masonry mortars in their early ages. Materials and Structures, 52(1), 131359-59971871-687310.1617/s11527-019-1319-zhttps://link.springer.com/article/10.1617/s11527-019-1319-zinfo: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:RCAAP2023-07-21T12:25:19Zoai:repositorium.sdum.uminho.pt:1822/68217Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:19:32.804766Repositório 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 |
Mechanical properties of lime–cement masonry mortars in their early ages |
title |
Mechanical properties of lime–cement masonry mortars in their early ages |
spellingShingle |
Mechanical properties of lime–cement masonry mortars in their early ages Ramesh, Meera Lime-cement masonry mortars Mechanical strength Stiffness Early-ages Ultrasound pulse velocity (UPV) Curing temperature and activation energy Engenharia e Tecnologia::Engenharia Civil Science & Technology |
title_short |
Mechanical properties of lime–cement masonry mortars in their early ages |
title_full |
Mechanical properties of lime–cement masonry mortars in their early ages |
title_fullStr |
Mechanical properties of lime–cement masonry mortars in their early ages |
title_full_unstemmed |
Mechanical properties of lime–cement masonry mortars in their early ages |
title_sort |
Mechanical properties of lime–cement masonry mortars in their early ages |
author |
Ramesh, Meera |
author_facet |
Ramesh, Meera Azenha, Miguel Lourenço, Paulo B. |
author_role |
author |
author2 |
Azenha, Miguel Lourenço, Paulo B. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Ramesh, Meera Azenha, Miguel Lourenço, Paulo B. |
dc.subject.por.fl_str_mv |
Lime-cement masonry mortars Mechanical strength Stiffness Early-ages Ultrasound pulse velocity (UPV) Curing temperature and activation energy Engenharia e Tecnologia::Engenharia Civil Science & Technology |
topic |
Lime-cement masonry mortars Mechanical strength Stiffness Early-ages Ultrasound pulse velocity (UPV) Curing temperature and activation energy Engenharia e Tecnologia::Engenharia Civil Science & Technology |
description |
Lime–cement mortars are often used in restoration of existing buildings (especially twentieth century onward) as well as new constructions, in order to combine the individual strengths of either type of binder. Despite the knowledge that mortars have a significant impact on the non-linear mechanical behaviour of masonry from the earliest moments of construction, literature that systematically quantifies the impact of adding lime to cement mortars, or vice versa is scarce and scattered. This work is therefore focussed on bridging the research gap that exists in lime–cement masonry mortars with regard to their mechanical properties in the early ages (up to 7 days of curing). Five different mix compositions have been studied with 1:3 binder-aggregate ratio and 10% to 75% lime content in the binder, both by volume. Changes in properties like mechanical strength and stiffness along with ultrasound pulse velocity have been quantified, correlated and associated with change in quantity of lime in the binder (by volume) of the mortar. It was found that every 10% increase in the quantity of lime in the binder led to a 14% decrease in mechanical strength and a corresponding 12% decrease in stiffness, at 7 days of curing age. E-modulus was found to evolve faster than flexural strength, which in turn was found to evolve faster than compressive strength. Impact of curing temperature and the concept of activation energy has been addressed for the mix 1:1:6 (Cement:Lime:Sand). |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01 2019-01-01T00:00:00Z |
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 |
https://hdl.handle.net/1822/68217 |
url |
https://hdl.handle.net/1822/68217 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ramesh, M., Azenha, M., & Lourenço, P. B. (2019). Mechanical properties of lime–cement masonry mortars in their early ages. Materials and Structures, 52(1), 13 1359-5997 1871-6873 10.1617/s11527-019-1319-z https://link.springer.com/article/10.1617/s11527-019-1319-z |
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 |
Springer |
publisher.none.fl_str_mv |
Springer |
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 |
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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 |
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1799132654915813376 |