Shrinkage and the development of mechanical properties in rendering mortars

This research discusses shrinkage and the development of mechanical properties in mortars made of cement, lime and sand 1:1:6 (volume), and in compositions with varying content of lime. Technology innovation was sought for in what concerns laboratory tests similar to real rendering conditions. The t...

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Asıl Yazarlar:	Bastos, Pedro Kopschitz Xavier, Détriché, Charles-Henri, Balayssac, Jean-Paul, Cincotto, Maria Alba
Materyal Türü:	Online
Dil:	por
Baskı/Yayın Bilgisi:	ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2008
Online Erişim:	https://seer.ufrgs.br/ambienteconstruido/article/view/3418
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id	ojs-article-3418
record_format	ojs
spelling	ojs-article-34182008-05-09T18:21:54Z Shrinkage and the development of mechanical properties in rendering mortars Retração e desenvolvimento de propriedades mecânicas em argamassas de revestimento Bastos, Pedro Kopschitz Xavier Détriché, Charles-Henri Balayssac, Jean-Paul Cincotto, Maria Alba Revestimento; Argamassa; Retração; Resistência à tração; Módulo de deformação This research discusses shrinkage and the development of mechanical properties in mortars made of cement, lime and sand 1:1:6 (volume), and in compositions with varying content of lime. Technology innovation was sought for in what concerns laboratory tests similar to real rendering conditions. The tests have been carried out in plaque specimens 15 and 25 mm thick. Factors such as mortar composition, water absorption through the basis and mortar/basis adherence, have been taken into account when analysing shrinkage in 400 mm x 150 mm specimens, as well as flexural strength and elasticity modulus. The mechanical tests have been carried out in plaques 200 mm x 75 mm, and the displacement in the centre of the specimen has been measured during loading for calculating elasticity modulus. The porosity of mortars has also been observed through the technique of mercury intrusion. The set of tests in the research showed the importance of laboratory simulation of real rendering conditions. A presente pesquisa aborda a retração e o desenvolvimento de propriedades mecânicas em argamassas mistas de revestimento de cimento, cal e areia, na proporção 1:1:6 em volume e em composições onde é variado o teor de cal. Procurando-se inovar na metodologia adotada, a retração foi observada nos estados fresco e endurecido, em corpos-de-prova de dimensões 400 mm x 150 mm, de espessuras 15 e 25 mm. Os ensaios mecânicos de flexão foram realizados em placas de dimensões 200 mm x 75 mm, espessura 15 mm, medindo-se o deslocamento no meio do corpo-de-prova, durante o carregamento, para o cálculo do módulo de deformação. Sobre os resultados dos ensaios foi analisada a influência dos fatores composição da argamassa, sucção de água pelo substrato e aderência argamassa/substrato. Observou-se também a porosimetria das argamassas com a técnica de intrusão de mercúrio. O conjunto de ensaios da pesquisa mostrou a importância da simulação em laboratório de condições de aplicação da argamassa de revestimento existentes em obra. ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2008-04-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.ufrgs.br/ambienteconstruido/article/view/3418 Ambiente Construído; v. 2, n. 2 (2002): Edição Especial Tecnologia das Argamassas; 57-70 Ambiente Construído; v. 2, n. 2 (2002): Edição Especial Tecnologia das Argamassas; 57-70 Ambiente Construído; v. 2, n. 2 (2002): Edição Especial Tecnologia das Argamassas; 57-70 1678-8621 1415-8876 por https://seer.ufrgs.br/ambienteconstruido/article/view/3418/1833 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	Bastos, Pedro Kopschitz Xavier Détriché, Charles-Henri Balayssac, Jean-Paul Cincotto, Maria Alba
spellingShingle	Bastos, Pedro Kopschitz Xavier Détriché, Charles-Henri Balayssac, Jean-Paul Cincotto, Maria Alba Shrinkage and the development of mechanical properties in rendering mortars
author_facet	Bastos, Pedro Kopschitz Xavier Détriché, Charles-Henri Balayssac, Jean-Paul Cincotto, Maria Alba
author_sort	Bastos, Pedro Kopschitz Xavier
title	Shrinkage and the development of mechanical properties in rendering mortars
title_short	Shrinkage and the development of mechanical properties in rendering mortars
title_full	Shrinkage and the development of mechanical properties in rendering mortars
title_fullStr	Shrinkage and the development of mechanical properties in rendering mortars
title_full_unstemmed	Shrinkage and the development of mechanical properties in rendering mortars
title_sort	shrinkage and the development of mechanical properties in rendering mortars
description	This research discusses shrinkage and the development of mechanical properties in mortars made of cement, lime and sand 1:1:6 (volume), and in compositions with varying content of lime. Technology innovation was sought for in what concerns laboratory tests similar to real rendering conditions. The tests have been carried out in plaque specimens 15 and 25 mm thick. Factors such as mortar composition, water absorption through the basis and mortar/basis adherence, have been taken into account when analysing shrinkage in 400 mm x 150 mm specimens, as well as flexural strength and elasticity modulus. The mechanical tests have been carried out in plaques 200 mm x 75 mm, and the displacement in the centre of the specimen has been measured during loading for calculating elasticity modulus. The porosity of mortars has also been observed through the technique of mercury intrusion. The set of tests in the research showed the importance of laboratory simulation of real rendering conditions.
publisher	ANTAC - Associação Nacional de Tecnologia do Ambiente Construído
publishDate	2008
url	https://seer.ufrgs.br/ambienteconstruido/article/view/3418
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Shrinkage and the development of mechanical properties in rendering mortars

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