2015
DOI: 10.1080/23311916.2015.1083137
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Utilisation of iron ore tailings as aggregates in concrete

Abstract: Sustainable handling of iron ore tailings is of prime concern to all stakeholders who are into iron ore mining. This study seeks to add value to the tailings by utilising them as a replacement for aggregates in concrete. A concrete mix of grade 40 MPa was prepared in the laboratory with water-cement ratio of 0.5. The concrete were cured for 1, 2, 3, 7, 14 and 28 days. The properties of the concrete such as workability, durability, density, compressive strength and indirect tensile strength were tested. A contr… Show more

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Cited by 77 publications
(31 citation statements)
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“…It is estimated that for each tonne of beneficiated iron ore, 400 kg of tailings are produced [ 1 ]. It was estimated that about 632 million tonnes of iron ore tailings are generated yearly in western Australia, and more than 275 tonnes in Brazil [ 1 , 2 ]. According to an official report, the stockpiles of iron ore tailings increased from 536 to 839 million tons during a period of five years since 2009, and this number still continues to increase year by year.…”
Section: Introductionmentioning
confidence: 99%
“…It is estimated that for each tonne of beneficiated iron ore, 400 kg of tailings are produced [ 1 ]. It was estimated that about 632 million tonnes of iron ore tailings are generated yearly in western Australia, and more than 275 tonnes in Brazil [ 1 , 2 ]. According to an official report, the stockpiles of iron ore tailings increased from 536 to 839 million tons during a period of five years since 2009, and this number still continues to increase year by year.…”
Section: Introductionmentioning
confidence: 99%
“…Na China, das 5,97 bilhões de toneladas de resíduos da mineração dispostas em aterros, aproximadamente um terço corresponde a resíduos de ferro (CHEN et al, 2011). Já na Austrália Ocidental, são geradas 632 milhões de toneladas de resíduos de minério de ferro por ano (KURANCHIE et al, 2015). No Brasil, em 2014, estimou-se que 275,5 milhões de toneladas foram destinadas a aterros e barragens de rejeitos (DAUCE et al, 2019).…”
Section: Introductionunclassified
“…No decorrer dos últimos anos, o uso dos resíduos passou a despertar maior interesse em função dos benefícios econômicos provenientes dos processos de recuperação de ferro e outros metais, entretanto tais atividades ainda enfrentam problemas de descarte de resíduos e poluição secundária. Uma alternativa eficiente e promissora para recuperação do recurso é a utilização dos resíduos de ferro para a fabricação de materiais construtivos, pois não gera resíduos (CHEN et al, 2011), reduz a necessidade de extração de recursos naturais, disponibiliza uma nova matéria-prima às indústrias do setor da construção civil e possibilita a redução de custos na produção (CHEN et al, 2011;KURANCHIE et al, 2015).…”
Section: Introductionunclassified
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“…Cui et al (2017) utilized IOTs for autoclaved aerated concrete in China due to the billions of tons generated there. Additionally, in Australia, Kuranchie et al (2015) studied IOTs as aggregates in concrete.…”
Section: Introductionmentioning
confidence: 99%