Effects of electric arc furnace dust on susceptibility of steel to corrosion in chloride-contaminated concrete

Mutlaq, F.M. Al; Page, Christopher

doi:10.1016/j.conbuildmat.2012.05.008

Cited by 16 publications

(9 citation statements)

References 11 publications

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“…Na rota integrada predomina o minério de ferro, com uma pequena quantidade de sucata de aço, enquanto que as usinas semi-integradas (fornos elétricos a arco -FEA) usam principalmente sucata [2,3]. O PAE é constituído por um pó muito fino, normalmente contendo metais pesados em concentrações variáveis, cuja disposição em aterros é problemática devido aos impactos ambientais negativos envolvidos [10]. A morfologia do PAE é predominante esférica e na forma de aglomerados, com 85% das partículas com granulometria abaixo de 10µm [11].…”

Section: Pó De Aciaria Elétrica (Pae)unclassified

Oportunidades Para Adição De Pó De Aciaria Elétrica No Cimento

Metz¹,

Brehm²,

Moraes³

et al. 2018

ABM Proceedings

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ResumoA concepção de desenvolvimento sustentável tem resultado no aumento de pressões ambientais para a melhoria da eficiência na utilização de recursos, e para a significativa redução das emissões e da geração de resíduos. No processo de fabricação de aço nas siderúrgicas com fornos elétricos a arco ocorre a geração do resíduo sólido denominado pó de aciaria elétrica (PAE). O PAE é constituído por diferentes óxidos metálicos. Contém cromo, chumbo e cádmio e, por isso, é classificado como resíduo classe I -Perigoso pela NBR 10004 [1]. Gerado em grandes quantidades diariamente em todo o país, o PAE é disposto principalmente em aterros industriais. A indústria da construção civil, devido a quantidade de matérias-primas consumida e variedade de produtos disponíveis -cimento, concreto, agregado, cerâmica, entre outros, apresenta-se como alternativa para a reciclagem de resíduos gerados em outros setores da econômica. Estudos indicam o potencial uso do PAE na produção de materiais da construção civil, tais como cimento e concreto. O objetivo deste trabalho é apresentar uma revisão da literatura sobre a viabilidade técnica da adição do PAE ao cimento como alternativa de valorização desse resíduo. Os estudos sugerem que em quantidades próximas a 1%, a adição de PAE não afeta de forma significativa as propriedades do cimento. Palavras-chave: Pó de aciaria elétrica; Siderurgia; Resíduos sólidos; Cimento. OPPORTUNITIES TO ADD ELECTRIC ARC FURNACE DUST IN CEMENT AbstractThe sustainable development concept has resulted in increased environmental pressures to improve the efficient use of resources and reduction of emissions and waste generation. In the steelmaking process through electric arc furnaces, dust generation occurs which is called electric arc furnace dust (EAFD). EAFD is composed by different metal oxides. Some common elements those constitute this dust, chromium, lead and cadmium, and therefore, waste is classified as class I -hazardous by NBR 10004 [1]. PAE has been generated in large quantities every day across the country and it has mainly landfilled. Due to expressive amount of raw materials consumed in civil construction industry and also the variety of products available (cement, concrete, aggregate, ceramics, among others), this seems to be an alternative for waste recycling generated in other sectors. Studies indicate the potential use of the EAFD in the production of construction materials such as cement and concrete. The objective of this paper is to present a literature review about the technical feasibility of adding EAFD in cement as an alternative valorization of this waste. Studies suggest that in amounts up to 1%, the addition of EAFD does not affect significantly cement properties.

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Section: Pó De Aciaria Elétrica (Pae)unclassified

Oportunidades Para Adição De Pó De Aciaria Elétrica No Cimento

Metz¹,

Brehm²,

Moraes³

et al. 2018

ABM Proceedings

View full text Add to dashboard Cite

show abstract

“…In the literature, some works attempted to explore the suitability of its application both in ceramics [Stathopoulos et al, 2013] and cement-based materials (Magalhães et al Fifth International Conference on Sustainable Construction Materials and Technologies. http://www.claisse.info/Proceedings.htm 2017a, Al-Zaid et al 1997, Vargas et al 2006, Maslehuddin et al 2011, Al-Mutlaq and Page 2013, Fares et al 2016. In these research works, it was observed that the cementmixtures containing up to 5% EAFD exhibited superior mechanical behaviour when compared to reference samples.…”

Section: Introductionmentioning

confidence: 97%

“…In these research works, it was observed that the cementmixtures containing up to 5% EAFD exhibited superior mechanical behaviour when compared to reference samples. However, blended cement with EAFD react more slowly than Portland cement due to the presence of zinc oxide in the dust that acts as a retardant in the setting times (Magalhães et al 2017a, Vargas et al 2006, Maslehuddin et al 2011, Al-Mutlaq and Page 2013, Fares et al 2016, Arliguie and Grandet 1990, Balderas et al 2001, Hamilton and Sammes 1999. According to Al-Zaid et al (1997) and Fares et al (2016), the extension of setting time may exceed 33 h with just an addition of 3% of dust.…”

Section: Introductionmentioning

confidence: 99%

“…Balderas et al (2001) demonstrated that the addition of 8 and 10% of treated EAFD with a H2SO4 solution produced retardation of the setting process and decreases earlyage compressive strength, but increased it significantly after seven days. Al- Mutlaq and Page (2013) found that the use of 3.5% non-chloride accelerators was ineffective in reducing setting time of concretes with 8% of EAFD. The principal factors that control setting time of cement based materials are: cement composition, water-cement ratio, temperature, mineral and chemical admixtures presences, etc (Metha and Monteiro 2006).…”

Section: Introductionmentioning

confidence: 99%

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Effect of water and alkali content on setting time of cement pastes with electric arc furnace dust (EAFD)

Magalhães¹,

Faleschini²,

Pellegrino³

et al. 2019

Sustainable Construction Materials and Technologies (SCMT)

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This study was undertaken to provide additional information about the effects of varying water-binder ratio (0.30-0.55) and electric arc furnace dust (EAFD) content (up to 20%) on setting times of blended cements. A study about the influence of total alkali content on setting time of blended cement was also conducted as an attempt to identify an efficient pre-treatment system to solve the retardation influence of such dust on setting time. Results indicate that the use of low w/b ratio is effective in shortening the setting time of blended cements, limiting the setting time below 24 h in most of the analysed mixtures. Increasing the alkali content was also effective on shortening the setting time of blended pastes. Final setting time of pastes with 10% and 20% EAFD was less than 6 hours, and when the EAFD content was 5%, setting times was almost the same of the cement paste.

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“…It was documented that the most abundant heavy metals found in EAFD were zinc (Zn), lead (Pb), iron (Fe) and other heavy metals, so that, EAFD is classified as a hazardous material [6,7]. Furthermore, the EAFD contains two major size fractions consist of a very finegrained portion and a coarser part.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of Utilization Eafd as Cement Replacement in Conventional Concrete

Fauzi

Syukri

Mulizar

et al. 2018

Portal: J. Civil. Eng

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— Industrial waste products can be considered as renewable resources, one of them is a steel manufacturing, which produced dust waste contain sponge iron, scrap metal and other steel wastes that impacted to environment. This waste material was called Electric Arc Furnace Dust (EAFD). This study investigates the feasibility of using EAFD as a cement replacement compared to silica fume (SF) and fly ash (FA) in terms of Chemical composition, workability, setting time, compressive strength and rapid chloride permeability resistance. The results showed that workability of EAFD is almost similar to control even if percentage of EAFD was increased. It is not refer to FA more workable or SF less workable with increase percentage of replacement. Furthermore, the EAFD significantly affect the setting time, which 3% EAFD replacement bring to prolong final setting time to more than 24 hours, while the setting time of SF and FA did not significant affected along with the increase replacement percentage. In addition, the 3% EAFD is optimum replacement for compressive strength and it is equivalent replacement level to 5% SF and 15% FA. Finally, the EAFD enhance the resistance for rapid chloride permeability more than FA but less than SF.

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Effects of electric arc furnace dust on susceptibility of steel to corrosion in chloride-contaminated concrete

Cited by 16 publications

References 11 publications

Oportunidades Para Adição De Pó De Aciaria Elétrica No Cimento

Oportunidades Para Adição De Pó De Aciaria Elétrica No Cimento

Effect of water and alkali content on setting time of cement pastes with electric arc furnace dust (EAFD)

Feasibility of Utilization Eafd as Cement Replacement in Conventional Concrete

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