Initial rheological description of high performance concretes
Concrete is defined as a composite material and, in rheological terms, it can be understood as a concentrated suspension of solid particles (aggregates) in a viscous liquid (cement paste). On a macroscopic scale, concrete flows as a liquid. It is known that the rheological behavior of the concrete i...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)
2006-12-01
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| Series: | Materials Research |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000400011 |
| _version_ | 1818700763311898624 |
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| author | Alessandra Lorenzetti de Castro Jefferson Benedicto Libardi Liborio |
| author_facet | Alessandra Lorenzetti de Castro Jefferson Benedicto Libardi Liborio |
| author_sort | Alessandra Lorenzetti de Castro |
| collection | DOAJ |
| description | Concrete is defined as a composite material and, in rheological terms, it can be understood as a concentrated suspension of solid particles (aggregates) in a viscous liquid (cement paste). On a macroscopic scale, concrete flows as a liquid. It is known that the rheological behavior of the concrete is close to that of a Bingham fluid and two rheological parameters regarding its description are needed: yield stress and plastic viscosity. The aim of this paper is to present the initial rheological description of high performance concretes using the modified slump test. According to the results, an increase of yield stress was observed over time, while a slight variation in plastic viscosity was noticed. The incorporation of silica fume showed changes in the rheological properties of fresh concrete. The behavior of these materials also varied with the mixing procedure employed in their production. The addition of superplasticizer meant that there was a large reduction in the mixture's yield stress, while plastic viscosity remained practically constant. |
| first_indexed | 2024-12-17T15:10:07Z |
| format | Article |
| id | doaj.art-050a60d291eb46d69d605c91f286d773 |
| institution | Directory Open Access Journal |
| issn | 1516-1439 |
| language | English |
| last_indexed | 2024-12-17T15:10:07Z |
| publishDate | 2006-12-01 |
| publisher | Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) |
| record_format | Article |
| series | Materials Research |
| spelling | doaj.art-050a60d291eb46d69d605c91f286d7732022-12-21T21:43:42ZengAssociação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol)Materials Research1516-14392006-12-019440541010.1590/S1516-14392006000400011Initial rheological description of high performance concretesAlessandra Lorenzetti de CastroJefferson Benedicto Libardi LiborioConcrete is defined as a composite material and, in rheological terms, it can be understood as a concentrated suspension of solid particles (aggregates) in a viscous liquid (cement paste). On a macroscopic scale, concrete flows as a liquid. It is known that the rheological behavior of the concrete is close to that of a Bingham fluid and two rheological parameters regarding its description are needed: yield stress and plastic viscosity. The aim of this paper is to present the initial rheological description of high performance concretes using the modified slump test. According to the results, an increase of yield stress was observed over time, while a slight variation in plastic viscosity was noticed. The incorporation of silica fume showed changes in the rheological properties of fresh concrete. The behavior of these materials also varied with the mixing procedure employed in their production. The addition of superplasticizer meant that there was a large reduction in the mixture's yield stress, while plastic viscosity remained practically constant.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000400011rheologyyield stressplastic viscosityhigh performance concrete |
| spellingShingle | Alessandra Lorenzetti de Castro Jefferson Benedicto Libardi Liborio Initial rheological description of high performance concretes Materials Research rheology yield stress plastic viscosity high performance concrete |
| title | Initial rheological description of high performance concretes |
| title_full | Initial rheological description of high performance concretes |
| title_fullStr | Initial rheological description of high performance concretes |
| title_full_unstemmed | Initial rheological description of high performance concretes |
| title_short | Initial rheological description of high performance concretes |
| title_sort | initial rheological description of high performance concretes |
| topic | rheology yield stress plastic viscosity high performance concrete |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000400011 |
| work_keys_str_mv | AT alessandralorenzettidecastro initialrheologicaldescriptionofhighperformanceconcretes AT jeffersonbenedictolibardiliborio initialrheologicaldescriptionofhighperformanceconcretes |