Method for obtaining the independency between strength and elasticity in proportioning studies of cement and lime mortar

Method for obtaining the independency between strength and elasticity in proportioning studies of cement and lime mortar

Cement-and-lime mortars, with different proportions in mass, were produced with the aim of modifying the compressive strength and the modulus of elasticity, in order to obtain some independence among those two variables. Sixteen different mixtures were made, modifying the proportions in mass of hydr...

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Autor principal: Dafico, Dario de Araújo
Formato: Online
Idioma:por
Publicado em: ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2008
Acesso em linha:https://seer.ufrgs.br/ambienteconstruido/article/view/3752
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spelling ojs-article-37522008-04-28T18:38:38Z Method for obtaining the independency between strength and elasticity in proportioning studies of cement and lime mortar Método para obtenção de independência entre resistência e elasticidade em estudos de dosagem de argamassas mistas Dafico, Dario de Araújo Argamassa; Dosagem; Resistência; Elasticidade Cement-and-lime mortars, with different proportions in mass, were produced with the aim of modifying the compressive strength and the modulus of elasticity, in order to obtain some independence among those two variables. Sixteen different mixtures were made, modifying the proportions in mass of hydrated lime/cement and water/cementitious materials. Based on the results of the tests of mechanical properties, the hypothesis that the variations of the compressive strength and of the modulus of elasticity do not present a direct dependence relationship was corroborated. Based on the analysis of the results, a mathematical model was tested for the relationship between compressive strength and the modulus of elasticity, and the volumetric relationship between the mortar components, resulting in a high correlation degree. The use of this proportioning method and of the mathematical model is proposed for the formulation of cement-and-lime mortar in order to meet the design specifications. Argamassas mistas de cimento e cal hidratada com diferentes proporções em massa foram dosadas com o objetivo de modificar a resistência à compressão e o módulo de deformação, de modo a obter certa independência entre essas duas variáveis. Foram dosadas 16 diferentes misturas, variando-se as relações em massa de cal hidratada/cimento e de água/aglomerante. Com os resultados dos ensaios das propriedades mecânicas, corroborou-se a hipótese de que as variações da resistência à compressão e do módulo de deformação não apresentam uma relação direta de dependência. A partir da análise dos resultados obtidos, testou-se um modelo matemático para a resistência à compressão e para o módulo de deformação em função de relações volumétricas entre os componentes das argamassas, obtendo-se elevado grau de correlação. Propõe-se a utilização desse método de proporcionamento e do modelo matemático para a formulação de argamassas mistas de cimento e cal visando atender às especificações definidas em projeto. ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2008-04-28 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.ufrgs.br/ambienteconstruido/article/view/3752 Ambiente Construído; v. 7, n. 4 (2007); 35-42 Ambiente Construído; v. 7, n. 4 (2007); 35-42 Ambiente Construído; v. 7, n. 4 (2007); 35-42 1678-8621 1415-8876 por https://seer.ufrgs.br/ambienteconstruido/article/view/3752/2105 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 Dafico, Dario de Araújo
spellingShingle Dafico, Dario de Araújo
Method for obtaining the independency between strength and elasticity in proportioning studies of cement and lime mortar
author_facet Dafico, Dario de Araújo
author_sort Dafico, Dario de Araújo
title Method for obtaining the independency between strength and elasticity in proportioning studies of cement and lime mortar
title_short Method for obtaining the independency between strength and elasticity in proportioning studies of cement and lime mortar
title_full Method for obtaining the independency between strength and elasticity in proportioning studies of cement and lime mortar
title_fullStr Method for obtaining the independency between strength and elasticity in proportioning studies of cement and lime mortar
title_full_unstemmed Method for obtaining the independency between strength and elasticity in proportioning studies of cement and lime mortar
title_sort method for obtaining the independency between strength and elasticity in proportioning studies of cement and lime mortar
description Cement-and-lime mortars, with different proportions in mass, were produced with the aim of modifying the compressive strength and the modulus of elasticity, in order to obtain some independence among those two variables. Sixteen different mixtures were made, modifying the proportions in mass of hydrated lime/cement and water/cementitious materials. Based on the results of the tests of mechanical properties, the hypothesis that the variations of the compressive strength and of the modulus of elasticity do not present a direct dependence relationship was corroborated. Based on the analysis of the results, a mathematical model was tested for the relationship between compressive strength and the modulus of elasticity, and the volumetric relationship between the mortar components, resulting in a high correlation degree. The use of this proportioning method and of the mathematical model is proposed for the formulation of cement-and-lime mortar in order to meet the design specifications.
publisher ANTAC - Associação Nacional de Tecnologia do Ambiente Construído
publishDate 2008
url https://seer.ufrgs.br/ambienteconstruido/article/view/3752
work_keys_str_mv AT daficodariodearaujo methodforobtainingtheindependencybetweenstrengthandelasticityinproportioningstudiesofcementandlimemortar
AT daficodariodearaujo metodoparaobtencaodeindependenciaentreresistenciaeelasticidadeemestudosdedosagemdeargamassasmistas
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