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Efecto de tratamientos en agregados reciclados sobre las propiedades en estado fresco y endurecido de concretos autocompactantes.

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dc.contributor.authorSilva Urrego, Yimmy Fernandospa
dc.contributor.authorArcila Castro, Alejandrospa
dc.contributor.authorDelvasto, Silviospa
dc.date.accessioned2022-06-01 00:00:00
dc.date.accessioned2022-06-17T20:21:31Z
dc.date.available2022-06-01 00:00:00
dc.date.available2022-06-17T20:21:31Z
dc.date.issued2022-06-01
dc.description.abstractLa utilización de agregados reciclados provenientes de residuos de construcción y demolición (RCD) en nuevas obras civiles se considera el camino hacia la sostenibilidad. Esta investigación presenta la posibilidad del uso de agregado grueso reciclado (AGR) y agregado grueso tratado (AGT) de concreto en la elaboración de concretos autocompactantes (CAC). Para este propósito, dos métodos de tratamiento se realizaron a los AGR, uno de los tratamientos fue mediante desgaste mecánico en un molino de bolas y el otro fue mediante la  inmersión en una solución acida (H2SO4) combinado con el desgaste mecánico. Para investigar el efecto de los AGR tratados sobre las propiedades mecánicas de los CACs, diferentes niveles de reemplazo (0%, 20% 40% y 100% en volumen) de agregado grueso natural (AGN) por AGR y AGT se realizaron. En estado fresco se evaluó capacidad de flujo, capacidad de paso y capacidad de llenado mediante el flujo de asentamiento con cono de Abrams, embudo en V y caja en L; y en estado endurecido se realizaron pruebas de resistencia a la compresión, tracción indirecta y flexión a los CACs. Los resultados muestran que los CAC con AGR presentaron una disminución en el desempeño de las propiedades en estado fresco y endurecido debido a la presencia del mortero adherido en este tipo de agregados, sin embargo, su trabajabilidad se encontró dentro de los parámetros establecidos por la EFNARC. Las propiedades mecánicas de los CAC con AGT presentaron un mejor desempeño en comparación a los CAC con AGR, debido al retiro del motero adherido mejorando la resistencia a la compresión todas las mezclas. Además, los CAC con AGT mostraron mejoras en las propiedades de permeabilidad presentando una reducción de porosidad de hasta un 6,06%.spa
dc.description.abstractThe use of recycled aggregates from construction and demolition waste (CDW) in new civil works is considered a way to sustainable development. This study presents the possibility of using recycled coarse aggregate (RCA) and treated coarse aggregate (TCA) from concrete in self-compacting concretes (SCC). For this purpose, two treatment methods were carried out to AGR, one of the treatments was by mechanical wear in a ball mill and the other was by immersion in an acid solution (H2SO4) combined with mechanical wear. To investigate the effect of different RCAs treatment on the mechanical properties of SCCs, different replacement levels (0%, 20%, 40% and 100% by volume) of natural coarse aggregate (NCA) by AGR and TCA were carried out. In the fresh state, filling ability, passing ability, workability and resistance to segregation were assessed using the Abrams cone (slump flow), V-funnel and L-box, and in the hardened state, tests of compression strength, indirect tensile strength and flexural strength were carried out to the SCCs. The results indicated that the increased proportions of RCA presented a decrease in the performance of the properties in the fresh and hardened state due to the presence of the mortar adhered in this type of aggregates, however, the workability re well-matched with the limitations provided by EFNARC. The SCCs with TCA presented a better performance compared to the SCCs with RCA. The mechanical properties of the SCC with TCA presented a better performance compared to the SCC with RCA, due to the removal of the adhered mortar, improving the compressive strength in all SCC with TCA. In addition, the SCCs with TCA showed improvements in the permeability properties, presenting a reduction in porosity of up to 6.06%.eng
dc.format.mimetypeapplication/pdfspa
dc.identifier.doi10.24050/reia.v19i38.1547
dc.identifier.eissn2463-0950
dc.identifier.issn1794-1237
dc.identifier.urihttps://repository.eia.edu.co/handle/11190/5176
dc.identifier.urlhttps://doi.org/10.24050/reia.v19i38.1547
dc.language.isospaspa
dc.publisherFondo Editorial EIA - Universidad EIAspa
dc.relation.bitstreamhttps://revistas.eia.edu.co/index.php/reveia/article/download/1547/1466
dc.relation.citationeditionNúm. 38 , Año 2022 : .spa
dc.relation.citationendpage20
dc.relation.citationissue38spa
dc.relation.citationstartpage3814 pp. 1
dc.relation.citationvolume19spa
dc.relation.ispartofjournalRevista EIAspa
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dc.rightsRevista EIA - 2022spa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.rights.coarhttp://purl.org/coar/access_right/c_abf2spa
dc.rights.creativecommonsEsta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-SinDerivadas 4.0.spa
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0spa
dc.sourcehttps://revistas.eia.edu.co/index.php/reveia/article/view/1547spa
dc.subjectSelf-compacting concreteeng
dc.subjectcompressive strengtheng
dc.subjectconstruction and demolition wasteeng
dc.subjectrecycled aggregates and treated aggregateseng
dc.subjectconcreto autocompactantespa
dc.subjectresistencia a la compresiónspa
dc.subjectresiduos de construcción y demoliciónspa
dc.subjectagregado recicladospa
dc.subjectagregado tratatospa
dc.titleEfecto de tratamientos en agregados reciclados sobre las propiedades en estado fresco y endurecido de concretos autocompactantes.spa
dc.title.translatedEffect of treatment in recycled aggregate on properties in fresh and hardened state of self compacting concrete.eng
dc.typeArtículo de revistaspa
dc.typeJournal articleeng
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dc.type.coarversionhttp://purl.org/coar/version/c_970fb48d4fbd8a85spa
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