Study of mechanical behavior of ultra - high performance concrete (UHPC) reinforced with hybrid fibers and with reduced cement consumption

Estudio del comportamiento mecánico del hormigón de ultra- altas prestaciones (UHPC) reforzado con fibras híbridas y con consumo reducido de cemento

dc.creatorChrist, R
dc.creatorPacheco, F
dc.creatorEhrenbring, H
dc.creatorQuinino, U
dc.creatorMancio, M
dc.creatorMuñoz, Y
dc.creatorTutikian, B
dc.date2020-11-19T19:33:37Z
dc.date2020-11-19T19:33:37Z
dc.date2019
dc.date.accessioned2023-10-03T19:43:15Z
dc.date.available2023-10-03T19:43:15Z
dc.identifierhttps://hdl.handle.net/11323/7368
dc.identifierhttp://dx.doi.org/10.4067/S0718-50732019000200159
dc.identifierCorporación Universidad de la Costa
dc.identifierREDICUC - Repositorio CUC
dc.identifierhttps://repositorio.cuc.edu.co/
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/9171750
dc.descriptionThis article evaluated mechanical behavior of ultra-high performance concrete (UHPC) reinforced with hybrid steel and polypropylene fibers, with cement consumption of 250 kg/m³ and application of confining pressure in fresh state. The consistency of the mixture was analyzed, as well as mechanical properties of compressive strength, flexural strength and toughness. The percentages of hybridization were 50 to 100% of metal fibers and 0 to 50% of polypropylene fibers. Results showed that the compressive strength of the composite was 180 MPa (26100 psi), despite its low cement consumption of 250 kg/m³ (2.08 lb/gal), with 80% steel fibers and 20% polypropylene fibers. The combination of fibers increased the mixture’s toughness. For the composition with 80% steel fibers and 20% polypropylene fibers, the strength for large deformations increased by 191% compared with the mixture with 100% steel fibers, pointing out the benefits of hybridization.
dc.descriptionEn este trabajo se evaluó el comportamiento mecánico de los hormigones de ultra-altas prestaciones (UHPC) reforzados con fibras híbridas de acero y polipropileno, con un consumo de cemento de 250 kg/m3 y aplicando una presión de confinamiento en su estado fresco. Se analizó la consistencia de la mezcla, las propiedades mecánicas de las resistencias a la compresión y flexión, así como la tenacidad. Se usaron porcentajes de hibridación del 50 al 100% de fibras metálicas y de 0 al 50% de fibras de polipropileno. Los resultados muestran que la resistencia a la compresión del compuesto fue de 180 MPa (26.100 psi), a pesar de su bajo consumo de cemento, de 250 kg/m³ (2,08 lb/gal), con 80% de fibras de acero y 20% de fibras de polipropileno. La combinación de fibras incrementó la tenacidad de la mezcla. Para esta misma composición, la resistencia para las grandes deformaciones aumentó en un 191% en comparación con la mezcla que contenía un 100% de fibras de acero, demostrando así los beneficios de la hibridación.
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherCorporación Universidad de la Costa
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dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttp://purl.org/coar/access_right/c_abf2
dc.sourceRevista Ingeniería de Construcción
dc.sourcehttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-50732019000200159&lng=en&nrm=iso&tlng=en
dc.subjectUltra-high performance concrete (UHPC)
dc.subjecthybrid fibers
dc.subjectlow cement consumption
dc.subjectmechanical properties
dc.subjecttoughness
dc.titleStudy of mechanical behavior of ultra - high performance concrete (UHPC) reinforced with hybrid fibers and with reduced cement consumption
dc.titleEstudio del comportamiento mecánico del hormigón de ultra- altas prestaciones (UHPC) reforzado con fibras híbridas y con consumo reducido de cemento
dc.typeArtículo de revista
dc.typehttp://purl.org/coar/resource_type/c_6501
dc.typeText
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typehttp://purl.org/redcol/resource_type/ART
dc.typeinfo:eu-repo/semantics/acceptedVersion
dc.typehttp://purl.org/coar/version/c_ab4af688f83e57aa


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