Desempeño mecánico y durable de concretos que incorporan agregado reciclado fino comercial
Desempeño mecánico y durable de concretos que incorporan agregado reciclado fino comercial
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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.Descargas
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Referencias (VER)
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