Tecnologia de betão estrutural sustentável

Tecnologia de betão estrutural sustentável

Akram Salim Pathan / DANDIP D. DESHMUKH / GAJENDRA R. GANDHE

65,49 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2026
Materia
Ciencia, ingeniería y tecnología medioambientales
ISBN:
9786209683763
65,49 €
IVA incluido
Disponible

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A substituição parcial do cimento por escória granulada de alto-forno moída (GGBS) melhora significativamente a sustentabilidade e o desempenho do betão. As misturas de betão que contêm GGBS apresentam uma resistência melhorada a longo prazo, uma permeabilidade reduzida e uma melhor resistência aos ataques de sulfato e cloreto, o que as torna altamente duráveis para ambientes agressivos. A resistência inicial pode ser ligeiramente inferior em comparação com as misturas de cimento Portland normal (OPC), mas os benefícios a longo prazo em termos de durabilidade, economia e impacto ambiental superam claramente esta limitação. 1) Pode concluir-se que a utilização de GGBS como substituto parcial do cimento pode melhorar a resistência e a durabilidade do betão.2) O betão misturado com as diferentes percentagens de GGBS apresenta uma maior trabalhabilidade do que o betão convencional devido à boa qualidade das partículas granuladas de escória finamente divididas.3) O betão misturado com GGBS resulta numa maior resistência à compressão do que o betão convencional devido às actividades pozolânicas do GGBS.4) A substituição de 40% do cimento pela utilização de GGBS dá o melhor resultado. Aumenta 3,28% mais a resistência à compressão do que o cubo de betão normal.

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