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Article . 2019 . Peer-reviewed
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Article . 2019
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PROPIEDADES FÍSICO-MECÁNICAS DE CONCRETOS AUTOCOMPACTANTES PRODUCIDOS CON POLVO DE RESIDUO DE CONCRETO

Authors: Jhonny Pastrana-Ayala; Yimmy Silva-Urrego; Juan Adrada-Molano; Silvio Delvasto-Arjona;

PROPIEDADES FÍSICO-MECÁNICAS DE CONCRETOS AUTOCOMPACTANTES PRODUCIDOS CON POLVO DE RESIDUO DE CONCRETO

Abstract

La gran demanda de Cemento Portland Ordinario (CPO) debido al incremento de nuevas obras civiles y la generación de Residuos de Construcción y Demolición (RCD) causan un impacto ambiental negativo, por lo que una solución a esta problemática es el reciclaje de estos materiales para la producción de nuevos concretos. El reemplazo parcial de CPO por polvo de residuo de concreto (Concrete Waste Powder, CWP), proveniente del proceso de reciclaje de concreto, ha sido un enfoque sostenible. En esta investigación ser realizó la caracterización química y puzolánica del CWP mediante Fluorescencia de Rayos X (FRX), la prueba Frattini e índice de actividad de resistencia. Además, se evaluó la factibilidad de producir Concretos Autocompactantes (CAC) elaborados con CWP. El comportamiento de los CAC preparado con varias relaciones de reemplazo de CWP por CPO (en 0, 10, 20 y 30 %) proveniente de RCD, se evaluaron experimentalmente. Las propiedades de trabajabilidad se determinaron mediante las pruebas de flujo de asentamiento, embudo en V y caja en L. Las propiedades en estado endurecido de los CAC estudiadas incluyeron la resistencia a la compresión, la resistencia a la tracción indirecta, la resistencia a la flexión, la porosidad y la succión capilar. Los resultados experimentales de este trabajo mostraron que el CWP puede ser empleado con éxito como relleno en concretos autocompactantes, a pesar de disminuir la trabajabilidad y la resistencia mecánica.

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Keywords

residuos de demolición y construcción, propiedades mecánicas, polvo de residuo de concreto, cemento portland, trabajabilidad, T1-995, TA1-2040, Engineering (General). Civil engineering (General), concreto autocompactante, Technology (General)

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    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).
    2
    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.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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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!
2
Average
Average
Average
gold