Desempeño mecánico y durable de concretos que incorporan agregado reciclado fino comercial

Desempeño mecánico y durable de concretos que incorporan agregado reciclado fino comercial

Contenido principal del artículo

Álvaro Guzmán Aponte
Diana Marcela Burgos Galindo
Nancy Torres Castellanos

Resumen

En este artículo se presentan los resultados de un estudio de viabilidad técnica de uso de agregado reciclado fino comercial (ARF) proveniente de concretos de las actividades de construcción y demolición (RC&D), en la fabricación de concreto de mediana resistencia. Con el fin de evaluar el desempeño mecánico y durable de los concretos, se estudiaron diferentes propiedades como la densidad, absorción, sorptividad, resistencia mecánica, tracción indirecta y permeabilidad al ion cloruro, de concretos con incorporación de 20% y 40% de ARF (ARF20% y ARF40%, respectivamente) en reemplazo del agregado fino natural. Los resultados se compararon con un concreto de referencia incorporando agregado fino natural (ARF0%).

Se encontró que la incorporación de ARF hasta un 40% en los concretos, no causa un detrimento marcado en la consistencia del concreto en estado fresco. En términos generales, a pesar de que las propiedades físicas, mecánicas y de durabilidad de los concretos en estado endurecido disminuyen con el incremento en la incorporación de ARF en reemplazo del agregado fino natural; los valores de las propiedades alcanzadas por los concretos ARF20% y ARF40%, fueron comprables a aquellas alcanzadas por el concreto de referencia ARF0%, y aptas para la construcción de concretos de mediana resistencia.

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Detalles del artículo

Biografía del autor/a (VER)

Diana Marcela Burgos Galindo, Escuela Colombiana de Ingeniería Julio Garavito

Ingeniera de Materiales – Doctora en Ingeniería Área de Énfasis Ingeniería de Materiales

Nancy Torres Castellanos, Escuela Colombiana de Ingeniería Julio Garavito

Ingeniera Civil – Maestría en Estructuras - Doctora en Ciencia y Tecnología de Materiales

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