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Propriedades do betão com escamas de lingotes de aço como substituto da areia

Propriedades do betão com escamas de lingotes de aço como substituto da areia

Jubair Ahmad Musazay / Sivakumar Naganathan

101,33 €
IVA incluido
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2026
Materia
Tecnología: cuestiones generales
ISBN:
9786209984969
101,33 €
IVA incluido
Disponible

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Durante o fabrico de lingotes de aço nas siderurgias, forma-se óxido de ferro sob a forma de uma superfície escamosa nos lingotes, devido ao processo de laminação a quente e de arrefecimento do aço. A nível industrial, esta superfície é designada por escamas de lingotes. Trata-se de um resíduo sólido industrial. Neste estudo, as escamas de lingotes são utilizadas como substituto parcial da areia no betão. Foram utilizadas seis percentagens diferentes de substituição por escamas de lingotes neste estudo. O betão fabricado com várias percentagens de escória de lingote foi curado em dois meios diferentes para a avaliação da durabilidade, nomeadamente água doce e água com maior salinidade. Independentemente da idade de cura e do meio de cura, verificou-se que a substituição de 15% da escória de lingote por agregado fino é o teor ideal. Verificou-se também que a proporção de substituição da escória de lingote é diretamente proporcional ao abatimento do betão e à densidade do betão fresco. A velocidade do pulso ultrassónico (UPV) aumentou com o aumento da resistência. No entanto, a UPV estabilizou com a idade do betão e foi mais elevada nas misturas curadas em água doce do que nas curadas em água salina.

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