The influence of curing and aging on chloride transport through ternary blended cement concrete

F. J. Luna; Á. Fernández; M. C. Alonso

doi:10.3989/mc.2018.11917

Autores/as

F. J. Luna Department of Construction, Instituto de Ciencias de la Construcción Eduardo Torroja-Consejo Superior de Investigaciones Científicas https://orcid.org/0000-0002-5236-694X
Á. Fernández Department of Construction, Instituto de Ciencias de la Construcción Eduardo Torroja-Consejo Superior de Investigaciones Científicas https://orcid.org/0000-0002-0793-969X
M. C. Alonso Department of Construction, Instituto de Ciencias de la Construcción Eduardo Torroja-Consejo Superior de Investigaciones Científicas https://orcid.org/0000-0002-4308-9506

DOI:

https://doi.org/10.3989/mc.2018.11917

Palabras clave:

Hormigón, Escorias granuladas de alto horno, Cloruros, Curado, Difusión

Resumen

Se estudia el efecto de la extensión del tiempo de curado y exposición a una fuente con cloruros en el transporte de dichos iones a través de hormigones con 100% de cemento Portland (OPC) y con cemento ternario compuesto por 64% OPC, 30% escorias de alto horno (BFS) y 6% fíller calizo (LF). La extensión del tiempo de curado (de 28 a 90 días) no afecta significativamente al transporte de cloruros, incluso en hormigones con adiciones minerales. El tiempo de exposición a los cloruros (3, 6 y 12 meses) es un parámetro muy influyente en el transporte, siendo al menos 6 meses necesarios para llegar a coeficientes de difusión estables, con un efecto del tiempo de exposición más crítico en hormigones con adiciones minerales. Las BFS disminuyen significativamente el transporte más por su capacidad de combinar cloruro que por el refinamiento en poros capilares por su hidratación tardía.

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Citas

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