Quantification of impact of lime on mechanical behaviour of lime cement blended mortars for bedding joints in masonry systems
Autor(a) principal: | |
---|---|
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/1822/68216 |
Resumo: | In the case of blended lime-cement mortars used for bedding joints in masonry systems, substitution of cement with lime in the binder involves changes in strength and stiffness. However, extensive quantification and correlation of these changes in mechanical properties appear to be scarcely explored in existing literature. This work aims at providing a methodical experimental campaign, targeting 14 different lime-cement mixes with the quantity of lime in the binder varying from 10% to 75% (by volume), binder-aggregate (B/Ag) ratios – of 1:3, 1:4, 1:5 and 1:6 at 6 different curing ages from 7 to 180 days. Changes in compressive strength and flexural strength were expressed as functions (equations) of lime content in the binder, B/Ag ratio and curing age. Every 1% increment in the quantity of lime in the binder led to approximately 1.4% decrease in mechanical strength of the mortar with respect to the reference (10% lime in the binder). Furthermore, correlation(s) between ultrasound pulse velocity (UPV), density, compressive and flexural strength have also been explored. Compressive strength divided by flexural strength provided an almost constant value for all lime-cement compositions at all ages (ratio ∼ 3), decreasing as a function of B/Ag ratio in the mix. The work has been concluded with a discussion on trends in E-modulus (4–18 GPa) and open porosity (23%–27%) as a function of lime content in the binder of the mix and the age of the mortar. |
id |
RCAP_82058a0fb37cbfd07420d14ae2de1f30 |
---|---|
oai_identifier_str |
oai:repositorium.sdum.uminho.pt:1822/68216 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Quantification of impact of lime on mechanical behaviour of lime cement blended mortars for bedding joints in masonry systemsLime-cement masonry mortarsWorkabilityMechanical strengthStatic E-modulusUltrasound velocity (UPV)Engenharia e Tecnologia::Engenharia CivilScience & TechnologyIn the case of blended lime-cement mortars used for bedding joints in masonry systems, substitution of cement with lime in the binder involves changes in strength and stiffness. However, extensive quantification and correlation of these changes in mechanical properties appear to be scarcely explored in existing literature. This work aims at providing a methodical experimental campaign, targeting 14 different lime-cement mixes with the quantity of lime in the binder varying from 10% to 75% (by volume), binder-aggregate (B/Ag) ratios – of 1:3, 1:4, 1:5 and 1:6 at 6 different curing ages from 7 to 180 days. Changes in compressive strength and flexural strength were expressed as functions (equations) of lime content in the binder, B/Ag ratio and curing age. Every 1% increment in the quantity of lime in the binder led to approximately 1.4% decrease in mechanical strength of the mortar with respect to the reference (10% lime in the binder). Furthermore, correlation(s) between ultrasound pulse velocity (UPV), density, compressive and flexural strength have also been explored. Compressive strength divided by flexural strength provided an almost constant value for all lime-cement compositions at all ages (ratio ∼ 3), decreasing as a function of B/Ag ratio in the mix. The work has been concluded with a discussion on trends in E-modulus (4–18 GPa) and open porosity (23%–27%) as a function of lime content in the binder of the mix and the age of the mortar.EuLA - European Lime Association; FCT Individual Scholarship of 1st author. uropean Lime Association for funding this project. Funding provided by the 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) and scholarship SFRH/BD/137358/2018.ElsevierUniversidade do MinhoRamesh, MeeraAzenha, MiguelLourenço, Paulo B.2019-122019-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/68216engM. Ramesh, M. Azenha, PB Lourenço (2019) Quantification of impact of lime on mechanical behaviour of lime cement blended mortars for bedding joints in masonry systems. Construction and Building Materials Volume 229, 30 December 2019, 1168840950-061810.1016/j.conbuildmat.2019.116884https://www.sciencedirect.com/science/article/pii/S0950061819323220info: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:RCAAP2023-10-07T01:22:06Zoai:repositorium.sdum.uminho.pt:1822/68216Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:38:50.235826Repositório 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 |
Quantification of impact of lime on mechanical behaviour of lime cement blended mortars for bedding joints in masonry systems |
title |
Quantification of impact of lime on mechanical behaviour of lime cement blended mortars for bedding joints in masonry systems |
spellingShingle |
Quantification of impact of lime on mechanical behaviour of lime cement blended mortars for bedding joints in masonry systems Ramesh, Meera Lime-cement masonry mortars Workability Mechanical strength Static E-modulus Ultrasound velocity (UPV) Engenharia e Tecnologia::Engenharia Civil Science & Technology |
title_short |
Quantification of impact of lime on mechanical behaviour of lime cement blended mortars for bedding joints in masonry systems |
title_full |
Quantification of impact of lime on mechanical behaviour of lime cement blended mortars for bedding joints in masonry systems |
title_fullStr |
Quantification of impact of lime on mechanical behaviour of lime cement blended mortars for bedding joints in masonry systems |
title_full_unstemmed |
Quantification of impact of lime on mechanical behaviour of lime cement blended mortars for bedding joints in masonry systems |
title_sort |
Quantification of impact of lime on mechanical behaviour of lime cement blended mortars for bedding joints in masonry systems |
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 Workability Mechanical strength Static E-modulus Ultrasound velocity (UPV) Engenharia e Tecnologia::Engenharia Civil Science & Technology |
topic |
Lime-cement masonry mortars Workability Mechanical strength Static E-modulus Ultrasound velocity (UPV) Engenharia e Tecnologia::Engenharia Civil Science & Technology |
description |
In the case of blended lime-cement mortars used for bedding joints in masonry systems, substitution of cement with lime in the binder involves changes in strength and stiffness. However, extensive quantification and correlation of these changes in mechanical properties appear to be scarcely explored in existing literature. This work aims at providing a methodical experimental campaign, targeting 14 different lime-cement mixes with the quantity of lime in the binder varying from 10% to 75% (by volume), binder-aggregate (B/Ag) ratios – of 1:3, 1:4, 1:5 and 1:6 at 6 different curing ages from 7 to 180 days. Changes in compressive strength and flexural strength were expressed as functions (equations) of lime content in the binder, B/Ag ratio and curing age. Every 1% increment in the quantity of lime in the binder led to approximately 1.4% decrease in mechanical strength of the mortar with respect to the reference (10% lime in the binder). Furthermore, correlation(s) between ultrasound pulse velocity (UPV), density, compressive and flexural strength have also been explored. Compressive strength divided by flexural strength provided an almost constant value for all lime-cement compositions at all ages (ratio ∼ 3), decreasing as a function of B/Ag ratio in the mix. The work has been concluded with a discussion on trends in E-modulus (4–18 GPa) and open porosity (23%–27%) as a function of lime content in the binder of the mix and the age of the mortar. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-12 2019-12-01T00:00:00Z |
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/1822/68216 |
url |
https://hdl.handle.net/1822/68216 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
M. Ramesh, M. Azenha, PB Lourenço (2019) Quantification of impact of lime on mechanical behaviour of lime cement blended mortars for bedding joints in masonry systems. Construction and Building Materials Volume 229, 30 December 2019, 116884 0950-0618 10.1016/j.conbuildmat.2019.116884 https://www.sciencedirect.com/science/article/pii/S0950061819323220 |
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) |
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 |
|
_version_ |
1799132927542427648 |