Micro structural research and hydration heat determination in Portland cement pastes with eletric arc furnace dust (EAFD)

The electric-arc furnace dust (EAFD) is rarely used in the construction industry. In countries where this waste is collected it is used in recovery processes of oxides metals such a Zn, Cd, Pb and Cr. These processes have been not used in Brazil, since the percentage of valuable metallic oxides in t...

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Main Authors:	Vargas, Alexandre Silva de, Masuero, Angela Borges, Vilela, Antônio Cézar Faria
Format:	Online
Language:	por
Published:	ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2008
Online Access:	https://seer.ufrgs.br/ambienteconstruido/article/view/3536
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id	ojs-article-3536
record_format	ojs
spelling	ojs-article-35362008-04-17T13:28:40Z Micro structural research and hydration heat determination in Portland cement pastes with eletric arc furnace dust (EAFD) Estudo microestrutural e determinação do calor de hidratação em pastas de cimento Portland com pó de aciaria elétrica (PAE) Vargas, Alexandre Silva de Masuero, Angela Borges Vilela, Antônio Cézar Faria pó de aciaria elétrica; resíduos; tempos de pega; calor de hidratação The electric-arc furnace dust (EAFD) is rarely used in the construction industry. In countries where this waste is collected it is used in recovery processes of oxides metals such a Zn, Cd, Pb and Cr. These processes have been not used in Brazil, since the percentage of valuable metallic oxides in the EAFD is not economically feasible (e.g. Zinc with only 13% of mass). There is still need for further research aiming at turning EAFD into a sub product. In this context, the behavior of the waste in Portland cement pastes was evaluated by determining the setting time and the hydration heat as well as by characterizing its mineralogical and micro structure in order to assess its possible use in construction. A utilização do pó de aciaria elétrica (PAE) na construção civil não é comum. Nos países em que esse resíduo é coletado, ele é utilizado em processos de recuperação de óxidos metálicos, tais como Zn, Cd, Pb e Cr. No Brasil, esses processos ainda não são realizados, pois a percentagem dos óxidos metálicos de valor comercial no PAE não são viáveis economicamente (por exemplo, o Zn com apenas 13% em massa). Portanto, fazem-se necessários outros estudos com o objetivo de torná-lo um subproduto. Nesse contexto, avaliou-se o comportamento do resíduo em pastas de cimento Portland composto (CP II-Z) por meio da determinação dos tempos de pega e do calor de hidratação, bem como a sua caracterização mineralógica e microestrutural, com o objetivo de uma possível utilização na construção civil. ANTAC - Associação Nacional de Tecnologia do Ambiente Construído 2008-04-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://seer.ufrgs.br/ambienteconstruido/article/view/3536 Ambiente Construído; v. 4, n. 2 (2004): Edição Especial Resíduos na Construção Civil; 7-18 Ambiente Construído; v. 4, n. 2 (2004): Edição Especial Resíduos na Construção Civil; 7-18 Ambiente Construído; v. 4, n. 2 (2004): Edição Especial Resíduos na Construção Civil; 7-18 1678-8621 1415-8876 por https://seer.ufrgs.br/ambienteconstruido/article/view/3536/1936 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	Vargas, Alexandre Silva de Masuero, Angela Borges Vilela, Antônio Cézar Faria
spellingShingle	Vargas, Alexandre Silva de Masuero, Angela Borges Vilela, Antônio Cézar Faria Micro structural research and hydration heat determination in Portland cement pastes with eletric arc furnace dust (EAFD)
author_facet	Vargas, Alexandre Silva de Masuero, Angela Borges Vilela, Antônio Cézar Faria
author_sort	Vargas, Alexandre Silva de
title	Micro structural research and hydration heat determination in Portland cement pastes with eletric arc furnace dust (EAFD)
title_short	Micro structural research and hydration heat determination in Portland cement pastes with eletric arc furnace dust (EAFD)
title_full	Micro structural research and hydration heat determination in Portland cement pastes with eletric arc furnace dust (EAFD)
title_fullStr	Micro structural research and hydration heat determination in Portland cement pastes with eletric arc furnace dust (EAFD)
title_full_unstemmed	Micro structural research and hydration heat determination in Portland cement pastes with eletric arc furnace dust (EAFD)
title_sort	micro structural research and hydration heat determination in portland cement pastes with eletric arc furnace dust (eafd)
description	The electric-arc furnace dust (EAFD) is rarely used in the construction industry. In countries where this waste is collected it is used in recovery processes of oxides metals such a Zn, Cd, Pb and Cr. These processes have been not used in Brazil, since the percentage of valuable metallic oxides in the EAFD is not economically feasible (e.g. Zinc with only 13% of mass). There is still need for further research aiming at turning EAFD into a sub product. In this context, the behavior of the waste in Portland cement pastes was evaluated by determining the setting time and the hydration heat as well as by characterizing its mineralogical and micro structure in order to assess its possible use in construction.
publisher	ANTAC - Associação Nacional de Tecnologia do Ambiente Construído
publishDate	2008
url	https://seer.ufrgs.br/ambienteconstruido/article/view/3536
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Micro structural research and hydration heat determination in Portland cement pastes with eletric arc furnace dust (EAFD)

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