Análise comparativa da tensão limite de escoamento de argamassas por meio da técnica de Pashias e reometria rotacional
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1517-707620160004.0081 http://hdl.handle.net/11449/173995 |
Resumo: | Studies about the rheological behavior of cementitious materials, especially mortars and concretes, have been developed to improve the quality and durability of these materials as well as prevent any future problems in the hardened state. The rotational rheometry is the classic test for the rheological characterization of cementitious materials, because it allows to infer about the level of yield stress and apparent viscosity of the material. The rotational rheometers are, however, costly equipments, which led to the development of alternative me-thods for low cost, as the Pashias technique. The Pashias technique is a modification of the slump-test proce-dure in order to characterize, rheologically, the materials by single determining of the yield stress. The work developed aimed to determine the yield stress of mortars from compositions of high performance concretes (HPC) dosed by the concepts of rheology and particles packing. For this, it was used the classic rheometric test and the Pashias technique (cylinder), in order to compare the results, and evaluate the capacity of alterna-tive technique in determining the yield stress of mortars. The comparison of the results obtained by different rheological test methods showed a good ability of the Pashias technique (alternative technique) to evaluate the of yield stress parameter of mortars (with errors ranging from 1% to 20%). In addition, was observed that the mortar obtained from HPC dosed by the concepts of particles packing appeared more fluid and workable, with less yield stress. |
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Análise comparativa da tensão limite de escoamento de argamassas por meio da técnica de Pashias e reometria rotacionalComparative analysis of yield stress of mortars by Pashias technique and rotational rheometryMortarParticle packingPashias techniqueRheometryYield stressStudies about the rheological behavior of cementitious materials, especially mortars and concretes, have been developed to improve the quality and durability of these materials as well as prevent any future problems in the hardened state. The rotational rheometry is the classic test for the rheological characterization of cementitious materials, because it allows to infer about the level of yield stress and apparent viscosity of the material. The rotational rheometers are, however, costly equipments, which led to the development of alternative me-thods for low cost, as the Pashias technique. The Pashias technique is a modification of the slump-test proce-dure in order to characterize, rheologically, the materials by single determining of the yield stress. The work developed aimed to determine the yield stress of mortars from compositions of high performance concretes (HPC) dosed by the concepts of rheology and particles packing. For this, it was used the classic rheometric test and the Pashias technique (cylinder), in order to compare the results, and evaluate the capacity of alterna-tive technique in determining the yield stress of mortars. The comparison of the results obtained by different rheological test methods showed a good ability of the Pashias technique (alternative technique) to evaluate the of yield stress parameter of mortars (with errors ranging from 1% to 20%). In addition, was observed that the mortar obtained from HPC dosed by the concepts of particles packing appeared more fluid and workable, with less yield stress.Departamento de Engenharia Civil Universidade Estadual Paulista (UNESP), Campus de Ilha Solteira, Caixa Postal 31Faculdade de Engenharia Civil Pontifícia Universidade Católica de Campinas (PUC-Campinas), Caixa Postal 317Universidade Estadual Paulista (UNESP), Campus de Ilha Solteira Caixa Postal 31Departamento de Engenharia Civil Universidade Estadual Paulista (UNESP), Campus de Ilha Solteira, Caixa Postal 31Universidade Estadual Paulista (UNESP), Campus de Ilha Solteira Caixa Postal 31Universidade Estadual Paulista (Unesp)Pontifícia Universidade Católica de Campinas (PUC-Campinas)Maciel, Geraldo de Freitas [UNESP]Barbosa, Mônica PintoPereira, Joao Batista [UNESP]2018-12-11T17:08:40Z2018-12-11T17:08:40Z2016-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article866-879application/pdfhttp://dx.doi.org/10.1590/S1517-707620160004.0081Revista Materia, v. 21, n. 4, p. 866-879, 2016.1517-7076http://hdl.handle.net/11449/17399510.1590/S1517-707620160004.00812-s2.0-850073725232-s2.0-85007372523.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporRevista Materia0,188info:eu-repo/semantics/openAccess2024-07-04T18:16:01Zoai:repositorio.unesp.br:11449/173995Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:45:22.796089Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Análise comparativa da tensão limite de escoamento de argamassas por meio da técnica de Pashias e reometria rotacional Comparative analysis of yield stress of mortars by Pashias technique and rotational rheometry |
title |
Análise comparativa da tensão limite de escoamento de argamassas por meio da técnica de Pashias e reometria rotacional |
spellingShingle |
Análise comparativa da tensão limite de escoamento de argamassas por meio da técnica de Pashias e reometria rotacional Maciel, Geraldo de Freitas [UNESP] Mortar Particle packing Pashias technique Rheometry Yield stress |
title_short |
Análise comparativa da tensão limite de escoamento de argamassas por meio da técnica de Pashias e reometria rotacional |
title_full |
Análise comparativa da tensão limite de escoamento de argamassas por meio da técnica de Pashias e reometria rotacional |
title_fullStr |
Análise comparativa da tensão limite de escoamento de argamassas por meio da técnica de Pashias e reometria rotacional |
title_full_unstemmed |
Análise comparativa da tensão limite de escoamento de argamassas por meio da técnica de Pashias e reometria rotacional |
title_sort |
Análise comparativa da tensão limite de escoamento de argamassas por meio da técnica de Pashias e reometria rotacional |
author |
Maciel, Geraldo de Freitas [UNESP] |
author_facet |
Maciel, Geraldo de Freitas [UNESP] Barbosa, Mônica Pinto Pereira, Joao Batista [UNESP] |
author_role |
author |
author2 |
Barbosa, Mônica Pinto Pereira, Joao Batista [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Pontifícia Universidade Católica de Campinas (PUC-Campinas) |
dc.contributor.author.fl_str_mv |
Maciel, Geraldo de Freitas [UNESP] Barbosa, Mônica Pinto Pereira, Joao Batista [UNESP] |
dc.subject.por.fl_str_mv |
Mortar Particle packing Pashias technique Rheometry Yield stress |
topic |
Mortar Particle packing Pashias technique Rheometry Yield stress |
description |
Studies about the rheological behavior of cementitious materials, especially mortars and concretes, have been developed to improve the quality and durability of these materials as well as prevent any future problems in the hardened state. The rotational rheometry is the classic test for the rheological characterization of cementitious materials, because it allows to infer about the level of yield stress and apparent viscosity of the material. The rotational rheometers are, however, costly equipments, which led to the development of alternative me-thods for low cost, as the Pashias technique. The Pashias technique is a modification of the slump-test proce-dure in order to characterize, rheologically, the materials by single determining of the yield stress. The work developed aimed to determine the yield stress of mortars from compositions of high performance concretes (HPC) dosed by the concepts of rheology and particles packing. For this, it was used the classic rheometric test and the Pashias technique (cylinder), in order to compare the results, and evaluate the capacity of alterna-tive technique in determining the yield stress of mortars. The comparison of the results obtained by different rheological test methods showed a good ability of the Pashias technique (alternative technique) to evaluate the of yield stress parameter of mortars (with errors ranging from 1% to 20%). In addition, was observed that the mortar obtained from HPC dosed by the concepts of particles packing appeared more fluid and workable, with less yield stress. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-10-01 2018-12-11T17:08:40Z 2018-12-11T17:08:40Z |
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://dx.doi.org/10.1590/S1517-707620160004.0081 Revista Materia, v. 21, n. 4, p. 866-879, 2016. 1517-7076 http://hdl.handle.net/11449/173995 10.1590/S1517-707620160004.0081 2-s2.0-85007372523 2-s2.0-85007372523.pdf |
url |
http://dx.doi.org/10.1590/S1517-707620160004.0081 http://hdl.handle.net/11449/173995 |
identifier_str_mv |
Revista Materia, v. 21, n. 4, p. 866-879, 2016. 1517-7076 10.1590/S1517-707620160004.0081 2-s2.0-85007372523 2-s2.0-85007372523.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Revista Materia 0,188 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
866-879 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129113519554560 |