Rheological characterization of cement paste: association of complementary techniques

The adaptability to different classes of material (concrete, mortars, fiber-cement, etc.) and methods of application (injection, pumping, spraying, casting, extrusion, etc.) is an essential feature of cement pastes. Each material or application system requires a set of characteristics of the fluid p...

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Principais autores:	Betioli, Andrea Murillo, John, Vanderley Moacyr, Gleize, Philippe Jean Paul, Pileggi, Rafael Giuliano
Formato:	Online
Idioma:	por
Publicado em:	ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2009
Acesso em linha:	https://seer.ufrgs.br/ambienteconstruido/article/view/9447
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id	ojs-article-9447
record_format	ojs
spelling	ojs-article-94472010-02-03T16:11:29Z Rheological characterization of cement paste: association of complementary techniques Caracterização reológica de pasta cimentícia: associação de técnicas complementares Betioli, Andrea Murillo John, Vanderley Moacyr Gleize, Philippe Jean Paul Pileggi, Rafael Giuliano Pasta de cimento. Técnicas de caraterização reológica. Reometrias de fluxo. Oscilatória. Reometria squeeze-flow. The adaptability to different classes of material (concrete, mortars, fiber-cement, etc.) and methods of application (injection, pumping, spraying, casting, extrusion, etc.) is an essential feature of cement pastes. Each material or application system requires a set of characteristics of the fluid pastes. Therefore, an adequate rheological test to characterize rheological behavior should identify all the required properties for each situation. The main problem associated with this approach is the lack of a single technique able to perform a thorough characterization. As an alternative, this work proposes to evaluate the behavior of a cement paste by associating traditional flow and oscillatory rheometry, with the less explored squeeze-flow testing method. The results showed that a single technique cannot evaluate the fundamental properties nor simulate the mixing, transport and application methods. Complementary techniques were necessary to identify the rheological behavior under different requirements. A adaptabilidade a diferentes tipos de materiais (concretos, argamassas, fibrocimento, etc.) e aplicações (injeção, bombeamento, spray, extrusão, etc.) é essencial para utilização de materiais à base de cimento. Cada material ou sistema de aplicação demanda um conjunto de características específicas da pasta fluida. Portanto, um ensaio adequado para avaliar o comportamento reológico destes materiais deve identificar todas as propriedades requeridas para cada situação. A maior dificuldade está na obtenção de uma única técnica capaz de simular todas as situações simultaneamente. Como alternativa, este trabalho propôs avaliar o comportamento reológico de uma pasta de cimento por uma associação de técnicas reológicas, tais como: reometrias rotacionais tradicionais de fluxo e oscilação e, um método menos explorado, o squeeze-flow. Os resultados mostraram que uma única técnica não é capaz de determinar as propriedades reológicas fundamentais nem de simular todas as solicitações que os materiais podem sofrer durante sua mistura, transporte e aplicação. Técnicas complementares foram necessárias, permitindo assim identificar o comportamento da pasta de cimento sob diferentes solicitações. ANTAC - Associação Nacional de Tecnologia do Ambiente Construído Capes 2009-12-09 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.ufrgs.br/ambienteconstruido/article/view/9447 Ambiente Construído; v. 9, n. 4 (2009); 37-48 Ambiente Construído; v. 9, n. 4 (2009); 37-48 Ambiente Construído; v. 9, n. 4 (2009); 37-48 1678-8621 1415-8876 por https://seer.ufrgs.br/ambienteconstruido/article/view/9447/7080 Direitos autorais 2016 Ambiente Construído https://creativecommons.org/licenses/by/4.0
institution	Universidade Federal do Rio Grande do Sul
collection	OJS
language	por
format	Online
author	Betioli, Andrea Murillo John, Vanderley Moacyr Gleize, Philippe Jean Paul Pileggi, Rafael Giuliano
spellingShingle	Betioli, Andrea Murillo John, Vanderley Moacyr Gleize, Philippe Jean Paul Pileggi, Rafael Giuliano Rheological characterization of cement paste: association of complementary techniques
author_facet	Betioli, Andrea Murillo John, Vanderley Moacyr Gleize, Philippe Jean Paul Pileggi, Rafael Giuliano
author_sort	Betioli, Andrea Murillo
title	Rheological characterization of cement paste: association of complementary techniques
title_short	Rheological characterization of cement paste: association of complementary techniques
title_full	Rheological characterization of cement paste: association of complementary techniques
title_fullStr	Rheological characterization of cement paste: association of complementary techniques
title_full_unstemmed	Rheological characterization of cement paste: association of complementary techniques
title_sort	rheological characterization of cement paste: association of complementary techniques
description	The adaptability to different classes of material (concrete, mortars, fiber-cement, etc.) and methods of application (injection, pumping, spraying, casting, extrusion, etc.) is an essential feature of cement pastes. Each material or application system requires a set of characteristics of the fluid pastes. Therefore, an adequate rheological test to characterize rheological behavior should identify all the required properties for each situation. The main problem associated with this approach is the lack of a single technique able to perform a thorough characterization. As an alternative, this work proposes to evaluate the behavior of a cement paste by associating traditional flow and oscillatory rheometry, with the less explored squeeze-flow testing method. The results showed that a single technique cannot evaluate the fundamental properties nor simulate the mixing, transport and application methods. Complementary techniques were necessary to identify the rheological behavior under different requirements.
publisher	ANTAC - Associação Nacional de Tecnologia do Ambiente Construído
publishDate	2009
url	https://seer.ufrgs.br/ambienteconstruido/article/view/9447
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_version_	1709370671020113920

Rheological characterization of cement paste: association of complementary techniques

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