Efecto de la incorporación de ceniza volante y escoria de horno alto en el comportamiento electroquímico de concretos de cemento comercial

Oscar J. Gutiérrez-Junco; Yaneth Pineda-Triana; Enrique Vera-López

doi:10.3989/revmetalm.058

Autores/as

Oscar J. Gutiérrez-Junco Universidad Pedagógica y Tecnológica de Colombia
Yaneth Pineda-Triana Universidad Pedagógica y Tecnológica de Colombia, Instituto para la Investigación e Innovación en Ciencia y Tecnología de Materiales (INCITEMA)
Enrique Vera-López Universidad Pedagógica y Tecnológica de Colombia, Instituto para la Investigación e Innovación en Ciencia y Tecnología de Materiales (INCITEMA)

DOI:

https://doi.org/10.3989/revmetalm.058

Palabras clave:

Cemento comercial, Cemento hidráulico adicionado, Corrosión, Materiales cementantes suplementarios

Resumen

Este trabajo presenta los resultados de la evaluación de propiedades de pastas de cemento comercial (CPC), mezcladas con ceniza volante (FA) y escoria de alto horno (GBFS). Inicialmente un total de 30 combinaciones fueron evaluadas en términos de resistencia a la compresión para establecer las proporciones óptimas de las materias primas. Después de esto, cuatro mezclas optimizadas fueron caracterizadas durante el proceso de fraguado y endurecimiento. Se realizaron ensayos electroquímicos en cilindros de concreto elaborados con los cementantes y con una varilla de acero de construcción embebida en su interior. Con el objetivo de evaluar el comportamiento frente a la corrosión se estudiaron aspectos termodinámicos y cinéticos. Los resultados mostraron que cementos comerciales mezclados con ceniza volante y escoria de alto horno, como los usados en esta investigación, presentan menor resistencia mecánica y a la corrosión que un cemento comercial.

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