Modelling proposal for the carbonation of white portland cement concrete

This paper describes an experimental program that aimed to assess the compressive strength and carbonation results of concrete specimens made with four types of white cement. The high early strength cement (CP-V) was taken as a reference for comparison. The influence of the water/cement ratio (0,4;...

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Hlavní autoři:	Kirchheim, Ana Paula, Rheinheimer, Vanessa, Dal Molin, Denise Carpena Coutinho, Ribeiro, José Luís Duarte
Médium:	Online
Jazyk:	por
Vydáno:	ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2008
On-line přístup:	https://seer.ufrgs.br/ambienteconstruido/article/view/3497
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id	ojs-article-3497
record_format	ojs
spelling	ojs-article-34972008-11-22T00:29:25Z Modelling proposal for the carbonation of white portland cement concrete Proposta de modelagem da carbonatação de concretos de cimento portland branco Kirchheim, Ana Paula Rheinheimer, Vanessa Dal Molin, Denise Carpena Coutinho Ribeiro, José Luís Duarte Cimento Portland branco estrutural; carbonatação This paper describes an experimental program that aimed to assess the compressive strength and carbonation results of concrete specimens made with four types of white cement. The high early strength cement (CP-V) was taken as a reference for comparison. The influence of the water/cement ratio (0,4; 0,5 and 0,6) was also investigated. The results showed that the compressive strength of the concrete made with white Portland cement was equivalent to the reference concrete. Also, carbonation tests indicated that the concrete made with structural white cement presented a slightly improved behavior when compared to the reference concrete, except for one of the models. The experimental results were analyzed statistically presenting a coefficient of determination greater than 75%. In this case, to reach a better performance some adjustments in the physical and chemical composition would be necessary. Este trabalho descreve um estudo experimental cujo objetivo foi avaliar a resistência à compressão e à carbonatação de concretos moldados com quatro tipos de cimento Portland branco estrutural, comparando seus resultados com um concreto moldado com cimento Portland de alta resistência inicial (CPV), utilizado como referência. Investigouse, também, a relação água/cimento (0,4; 0,5; 0,6). Os resultados obtidos mostram que o desempenho dos concretos moldados com os cimentos Portland branco estudados equivalem ao dos moldados com CPV. Em termos de carbonatação, os resultados experimentais foram modelados estatisticamente e apresentaram coeficientes de determinação superiores a 75%. Os modelos obtidos revelam que, no que se refere à carbonatação, o desempenho dos concretos moldados com cimento branco foi geralmente superior ao dos moldados com cimento CPV, exceto para um deles. Nesse caso, seriam necessários ajustes em sua composição física e química, para que este tenha uma melhora em seu desempenho. ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2008-04-16 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.ufrgs.br/ambienteconstruido/article/view/3497 Ambiente Construído; v. 3, n. 3 (2003); 95-109 Ambiente Construído; v. 3, n. 3 (2003); 95-109 Ambiente Construído; v. 3, n. 3 (2003); 95-109 1678-8621 1415-8876 por https://seer.ufrgs.br/ambienteconstruido/article/view/3497/1898 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	Kirchheim, Ana Paula Rheinheimer, Vanessa Dal Molin, Denise Carpena Coutinho Ribeiro, José Luís Duarte
spellingShingle	Kirchheim, Ana Paula Rheinheimer, Vanessa Dal Molin, Denise Carpena Coutinho Ribeiro, José Luís Duarte Modelling proposal for the carbonation of white portland cement concrete
author_facet	Kirchheim, Ana Paula Rheinheimer, Vanessa Dal Molin, Denise Carpena Coutinho Ribeiro, José Luís Duarte
author_sort	Kirchheim, Ana Paula
title	Modelling proposal for the carbonation of white portland cement concrete
title_short	Modelling proposal for the carbonation of white portland cement concrete
title_full	Modelling proposal for the carbonation of white portland cement concrete
title_fullStr	Modelling proposal for the carbonation of white portland cement concrete
title_full_unstemmed	Modelling proposal for the carbonation of white portland cement concrete
title_sort	modelling proposal for the carbonation of white portland cement concrete
description	This paper describes an experimental program that aimed to assess the compressive strength and carbonation results of concrete specimens made with four types of white cement. The high early strength cement (CP-V) was taken as a reference for comparison. The influence of the water/cement ratio (0,4; 0,5 and 0,6) was also investigated. The results showed that the compressive strength of the concrete made with white Portland cement was equivalent to the reference concrete. Also, carbonation tests indicated that the concrete made with structural white cement presented a slightly improved behavior when compared to the reference concrete, except for one of the models. The experimental results were analyzed statistically presenting a coefficient of determination greater than 75%. In this case, to reach a better performance some adjustments in the physical and chemical composition would be necessary.
publisher	ANTAC - Associação Nacional de Tecnologia do Ambiente Construído
publishDate	2008
url	https://seer.ufrgs.br/ambienteconstruido/article/view/3497
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Modelling proposal for the carbonation of white portland cement concrete

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