Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2)
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.21/5702 |
Resumo: | Resumo: Cement, as well as the remaining constituents of self-compacting mortars, must be carefully selected, in order to obtain an adequate composition with a granular mix as compact as possible and a good performance in the fresh state (self-compacting effect) and the hardened state (mechanical and durability-related behavior). Therefore in this work the possibility of incorporating nano particles in self-compacting mortars was studied. Nano materials are very reactive due mostly to their high specific surface and show a great potential to improve the properties of these mortars, both in mechanical and durability terms. In this work two nano materials were used, nano silica (nano SiO2) in colloidal state and nano titanium (nano TiO2) in amorphous state, in two types of self-compacting mortars (ratio binder:sand of 1:1 and 1:2). The self-compacting mortar mixes have the same water/cement ratio and 30% of replacement of cement with fly ashes. The influence of nano materials nano-SiO2 and nano-TiO2 on the fresh and hardened state properties of these self-compacting mortars was studied. The results show that the use of nano materials in repair and rehabilitation mortars has significant potential but still needs to be optimized. (C) 2015 Elsevier Ltd. All rights reserved. |
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Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2)Self-compacting mortarFly ashNano titaniumNano silicaFresh propertiesMechanical propertiesDurabilityResumo: Cement, as well as the remaining constituents of self-compacting mortars, must be carefully selected, in order to obtain an adequate composition with a granular mix as compact as possible and a good performance in the fresh state (self-compacting effect) and the hardened state (mechanical and durability-related behavior). Therefore in this work the possibility of incorporating nano particles in self-compacting mortars was studied. Nano materials are very reactive due mostly to their high specific surface and show a great potential to improve the properties of these mortars, both in mechanical and durability terms. In this work two nano materials were used, nano silica (nano SiO2) in colloidal state and nano titanium (nano TiO2) in amorphous state, in two types of self-compacting mortars (ratio binder:sand of 1:1 and 1:2). The self-compacting mortar mixes have the same water/cement ratio and 30% of replacement of cement with fly ashes. The influence of nano materials nano-SiO2 and nano-TiO2 on the fresh and hardened state properties of these self-compacting mortars was studied. The results show that the use of nano materials in repair and rehabilitation mortars has significant potential but still needs to be optimized. (C) 2015 Elsevier Ltd. All rights reserved.Elsevier Science LTDRCIPLRao, S.Raposeiro Da Silva, PedroDe Brito, Jorge2016-02-23T12:15:55Z2015-10-152015-10-15T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.21/5702engRAO, S; SILVA, Pedro Raposeiro da; BRITO, Jorge de - Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2). Construction and Building Materials. ISSN. 0950-0618 Vol. 96 (2015), pp. 508-5170950-061810.1016/j.conbuildmat.2015.08.049metadata 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:RCAAP2023-08-03T09:49:30Zoai:repositorio.ipl.pt:10400.21/5702Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:14:57.046471Repositório 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 |
Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2) |
title |
Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2) |
spellingShingle |
Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2) Rao, S. Self-compacting mortar Fly ash Nano titanium Nano silica Fresh properties Mechanical properties Durability |
title_short |
Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2) |
title_full |
Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2) |
title_fullStr |
Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2) |
title_full_unstemmed |
Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2) |
title_sort |
Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2) |
author |
Rao, S. |
author_facet |
Rao, S. Raposeiro Da Silva, Pedro De Brito, Jorge |
author_role |
author |
author2 |
Raposeiro Da Silva, Pedro De Brito, Jorge |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
RCIPL |
dc.contributor.author.fl_str_mv |
Rao, S. Raposeiro Da Silva, Pedro De Brito, Jorge |
dc.subject.por.fl_str_mv |
Self-compacting mortar Fly ash Nano titanium Nano silica Fresh properties Mechanical properties Durability |
topic |
Self-compacting mortar Fly ash Nano titanium Nano silica Fresh properties Mechanical properties Durability |
description |
Resumo: Cement, as well as the remaining constituents of self-compacting mortars, must be carefully selected, in order to obtain an adequate composition with a granular mix as compact as possible and a good performance in the fresh state (self-compacting effect) and the hardened state (mechanical and durability-related behavior). Therefore in this work the possibility of incorporating nano particles in self-compacting mortars was studied. Nano materials are very reactive due mostly to their high specific surface and show a great potential to improve the properties of these mortars, both in mechanical and durability terms. In this work two nano materials were used, nano silica (nano SiO2) in colloidal state and nano titanium (nano TiO2) in amorphous state, in two types of self-compacting mortars (ratio binder:sand of 1:1 and 1:2). The self-compacting mortar mixes have the same water/cement ratio and 30% of replacement of cement with fly ashes. The influence of nano materials nano-SiO2 and nano-TiO2 on the fresh and hardened state properties of these self-compacting mortars was studied. The results show that the use of nano materials in repair and rehabilitation mortars has significant potential but still needs to be optimized. (C) 2015 Elsevier Ltd. All rights reserved. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-10-15 2015-10-15T00:00:00Z 2016-02-23T12:15:55Z |
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/10400.21/5702 |
url |
http://hdl.handle.net/10400.21/5702 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
RAO, S; SILVA, Pedro Raposeiro da; BRITO, Jorge de - Experimental study of the mechanical properties and durability of self-compacting mortars with nano materials (SiO2 and TiO2). Construction and Building Materials. ISSN. 0950-0618 Vol. 96 (2015), pp. 508-517 0950-0618 10.1016/j.conbuildmat.2015.08.049 |
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 Science LTD |
publisher.none.fl_str_mv |
Elsevier Science LTD |
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 |
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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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1799133407237636096 |