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Article . 2023
License: CC BY NC SA
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Evaluación de métodos para la determinación de la absorción en agregados finos reciclados

Authors: Sosa, Maria Eva; Zega, Claudio Javier; villagran zacardi, Yury Andres;

Evaluación de métodos para la determinación de la absorción en agregados finos reciclados

Abstract

La absorción de los agregados finos reciclados (AFR) es mencionada como la propiedad que más afecta el desempeño del hormigón con AFR. A nivel mundial el método más utilizado para evaluar dicha propiedad es el del molde troncocónico. Sin embargo, cuando los agregados presentan alto contenido de polvo y/o formas angulares la efectividad del método se reduce, generando, ya desde la década del ´70, gran cantidad de cuestionamientos. Particularmente con el interés de utilizar AFR para elaborar hormigones, han surgido diferentes métodos alternativos que superan los inconvenientes que presenta el método tradicional en agregados con las características indicadas. En este estudio, diversos métodos propuestos para determinar la absorción de AFR son analizados comparativamente. De los resultados obtenidos surge una gran variabilidad de la absorción de agua determinada por distintos métodos, siendo el eléctrico y el del secado continuo los que presentan una mayor potencialidad para la determinación de la absorción.

The absorption of fine recycled aggregates (FRA) is mentioned as the property that most affects the performance of FRA concrete. Worldwide the most used and standardized method is the frustoconical mold. However, when the aggregates have a high dust content and/or angular shapes, the effectiveness of the method is reduced, originating a great deal of questioning in the literature since the 1970s. Since then, and particularly with the interest of using FRA in concrete production, different alternative methods have emerged, which overcome the drawbacks in aggregates with the previously indicated characteristics. This study analyzes comparatively various methods proposed to determine the FRA absorption. From the results, a great variability of the water absorption determined by different methods emerges, being the electric method and the continuous drying method the ones that present the greatest potential for the determination of the actual absorption.

Fil: Sosa, Maria Eva. Universidad Tecnológica Nacional. Facultad Regional La Plata. Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Tecnológica Nacional. Facultad Reg.la Plata. Departamento de Ingeniería Civil. Centro de Inv. Viales; Argentina

Fil: Zega, Claudio Javier. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Laboratorio de Entrenamiento Multidisciplinario para la Investigación Tecnológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina

Fil: villagran zacardi, Yury Andres. Flemish Institute for Technological Research; Bélgica

Country
Argentina
Keywords

ABSORCIÓN DE AGUA, ESTADO SATURADO SUPERFICIE SECA, https://purl.org/becyt/ford/2.1, https://purl.org/becyt/ford/2, AGREGADOS FINOS RECICLADOS

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green