Influence of milling of a reused FCC catalytic waste on the early hydration stages of a special class cement

Oliveira, Josinorma Silva de; Maciel, Kuelson Rândello Dantas; Dweck, Jo; Andrade, Heloysa Martins Carvalho; Gonçalves, Jardel Pereira

doi:10.1007/s10973-021-10688-4

Cited by 10 publications

(7 citation statements)

References 30 publications

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“…This could be explained by the pozzolanic reaction of the zeolitic by-product. During the hydration process, the aluminosilicate network of zeolitic by-product decomposed and calcium cations reacted with aluminate and silicate radicals by forming calcium silicate hydrate and calcium aluminum oxide carbonate hydrate [41]. Thermal analysis has confirmed the findings of XRD analysis.…”

Section: Resultssupporting

confidence: 53%

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The Using of Concrete Wash Water from Ready Mixed Concrete Plants in Cement Systems

et al. 2021

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Concrete plants accumulate large amounts of concrete wash water. This water, which pH is highly alkaline, has a negative impact on the environment. Its reuse in fresh concrete slightly reduces its mechanical properties. The combination of concrete wash water and zeolitic by-product led to an increase of 4.6% in the compressive strength at 7 days hydration and up to 30% at 28 days hydration. The same combination led to the denser microstructure compared to the samples made with concrete wash water. This could be explained by the pozzolanic reaction of the zeolitic by-product. The complex chemical reactions of cement, zeolitic by-product, and fines presented in the concrete wash water occurred. Therefore, it was suggested the reusing method of concrete wash water together with zeolitic by-product in the fresh concrete mixtures by substituting some amount of tap water with concrete wash water. In this way, the consumption of tap water is possible to reduce in cement systems.

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Section: Resultssupporting

confidence: 53%

“…aluminosilicate network of zeolitic by-product decomposed and calcium cations reacted with aluminate and silicate radicals by forming calcium silicate hydrate and calcium aluminum oxide carbonate hydrate [41].…”

Section: Resultsmentioning

confidence: 99%

The Using of Concrete Wash Water from Ready Mixed Concrete Plants in Cement Systems

et al. 2021

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“…O RP foi oriundo de uma distribuidora de revestimentos de piso do tipo porcelanato esmaltado, localizada em Salvador/BA. O MK e o cimento Portland tipo CPV-ARI foram adquiridos de fornecedores da região de Salvador/BA e a argila natural foi proveniente da moagem em moinho planetário de bolas PM 10 (Retsch) a uma velocidade de rotação de 2 rpm por 2 minutos, conforme procedimento detalhado em investigações anteriores (COSTA; DE OLIVEIRA et al, 2022). A Figura 1 apresenta os diâmetros D10%, D50% e D90% dos materiais obtidos por difração a laser.…”

Section: Materiaisunclassified

Utilização do teste rápido (R³) para avaliação da reatividade pozolânica do resíduo de bloco cerâmico como material cimentício suplementar

Souza da Paixão,

Santos de Carvalho,

Bastos de Britto Barbosa

et al. 2023

Viii Encontro Nacional De Aproveitamento De Resíduos Na Construção

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A utilização de MCS alternativos como o Resíduo de Bloco Cerâmico (RBC) requer que o beneficiamento seja orientado pela reatividade do material. Nesse sentido, este estudo avaliou a influência do tamanho das partículas do RBC sobre a reatividade pozolânica. O RBC com cinco diferentes granulometrias foi comparado ao metacaulim, argila natural e resíduo de porcelanato (RP). A pozolanicidade foi avaliada pelo teste R3 aplicando calorimetria isotérmica e quantificação do teor de água combinada, além da resistência à compressão axial e DRX/Rietveld das pastas de cimentos compostos tipo CPII-Z e CPIV. A diminuição do diâmetro D90% do RBC de 33 para 11 µm aprimorou a reatividade pozolânica em 50%. Para diâmetro D90% abaixo de 11 µm, o incremento da reatividade (<2%) pode não compensar os custos associados ao prolongamento da moagem. Os resultados evidenciaram a importância do beneficiamento orientado pela reatividade, otimizando o potencial de reciclagem do RBC em cimentos compostos.

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“…In this sense, using cement made with locally available raw materials with low embodied energy would provide significant benefits for the sustainability of construction 3 . Using supplementary cementitious materials (SCM) with pozzolanic reactivity for partial clinker replacement is a promising solution [4][5][6][7][8][9][10] . Among the alternatives containing SCM, ternary cement (TC) or limestone calcined clay cement was developed.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Drilling Cuttings Reactivity as a Supplementary Cementitious Material in Ternary Cements

Maciel,

Costa,

Oliveira

et al. 2023

Mat. Res.

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This study evaluates the influence of milling on the reactivity of drilling cuttings (DC) utilized as supplementary cementitious material in ternary cements (TC). The drilling cuttings milling study varied the time (2, 5, 10, 15, and 20 min) and rotation speed (200 and 300 rpm), determining the specific milling energy and grindability index. The hydration of TC pastes containing DC with different particle size distributions was evaluated by isothermal calorimetry during the first 72 hours, XRD/Rietveld at 3 and 28 days, compressive strength and absorption. The incorporation of milled DC improved the TC hydration kinetics compared to reference pastes of ordinary Portland cement (REF.PC). After 28 days, the TC pastes with the D 50% diameter smaller than 11 µm reached at least 70% of the resistance to the strength of the Portland cement paste. Milled DC contributes to the physical and nucleation effect of the TC pastes studied and can be used as an SCM.

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Influence of milling of a reused FCC catalytic waste on the early hydration stages of a special class cement

Cited by 10 publications

References 30 publications

The Using of Concrete Wash Water from Ready Mixed Concrete Plants in Cement Systems

The Using of Concrete Wash Water from Ready Mixed Concrete Plants in Cement Systems

Utilização do teste rápido (R³) para avaliação da reatividade pozolânica do resíduo de bloco cerâmico como material cimentício suplementar

Optimization of Drilling Cuttings Reactivity as a Supplementary Cementitious Material in Ternary Cements

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