Effect of chloride ion on the compressive mechanical properties of RC-65/35-BN steel fiber reinforced concrete

Carrillo, Julián; Cárdenas-Pulido, Jhon; Chaparro, William Aperador

doi:10.14482/inde.33.2.7075

Cited by 2 publications

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“…Previous studies 2–5 have reported the improved performance of concrete when hooked end fibers are used; it has been indicated that the performance of steel fiber reinforced concrete (SFRC) is enhanced as the number of hooked ends of the fibers increases 6–8 . In flexure‐controlled elements, the use of SFRC allows for a reduction of conventional reinforcement, and very importantly, of construction time and costs of transportation, bending and cutting activities, preparation and storage of steel deformed bars or welded wire meshes 3 . Steel fibers also increase the durability of concrete in aggressive environments because limited crack openings reduce the water absorption and the permeability of concrete 9 .…”

Section: Introductionmentioning

confidence: 99%

Model for estimating the flexural performance of concrete reinforced with hooked end steel fibers using three‐point bending tests

Carrillo

Vargas

Alcocer

2021

Structural Concrete

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The behavior of fiber reinforced concrete (FRC) depends on the characteristics of both the concrete matrix and fibers. Previous studies have concluded that the number of hooked ends increases the contribution of steel fibers to the tensile performance of concrete. ACI 318 code, MC10 fib code and RILEM TC 162‐TDF standard permit the use of steel fiber reinforced concrete (SFRC) for example, the minimum shear reinforcement made of deformed steel bars in flexure‐controlled elements. Other investigations have demonstrated the suitable performance of SFRC in shear‐controlled members and for seismic rehabilitation applications. It has become apparent that the adequate use of SFRC depends on the knowledge and prediction capabilities of its tensile performance. The results of three‐point bending tests on SFRC beams using the test procedure established by the European standard EN‐14651 are presented and discussed herein. Tests were executed with 20 standardized beams made of concrete with a nominal compressive strength of 24 MPa and hooked end steel fibers with an aspect ratio of 65 were applied. Variables were the fiber dosage (0, 20, 40, 60 kg/m3) and the number of fiber hooked ends (1, 1.5, and 2). A numerical model aimed at estimating the residual flexural tensile strength of the SFRC is developed. The proposed model was calibrated using a database of 256 tests, 20 from this study and the remaining 236 from 15 other studies.

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Section: Introductionmentioning

confidence: 99%

Model for estimating the flexural performance of concrete reinforced with hooked end steel fibers using three‐point bending tests

Carrillo

Vargas

Alcocer

2021

Structural Concrete

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Revisión sistemática de la literatura sobre mejoramiento de las propiedades mecánicas del concreto adicionando fibras artificiales y naturales

Pérez

Saravia

Pérez

2022

Ing.

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Contexto: Toda vez que hoy en día las estructuras están siendo afectadas debido al medio ambiente en el que se ubican, así como por fuertes movimientos sísmicos, llevándolas en algunos casos hasta el colapso. Método: Se realizó una búsqueda de artículos científicos para el período 2014-2021 en diferentes bases de datos. Se recopilaron 56 investigaciones que emplearon fibras. Para ello se utilizaron palabras claves como: hormigón reforzado, reinforced concrete y propiedades mecánicas del hormigón. Resultados: Las características mecánicas del hormigón que debe priorizarse mejorar deben ser la capacidad de resistencia a la compresión, la resistencia a la tracción, el módulo de elasticidad, propiedades de durabilidad como la resistencia al ataque químico, las propiedades de contracción, las propiedades de permeabilidad y propiedades físicas como el tiempo de secado, el peso unitario, la erosión y la absorción. Conclusiones: Entre las fibras artificiales más utilizadas por los investigadores destacan las fibras metálicas. Del mismo modo, dentro de las fibras naturales destacan la de banano, la cáscara de arroz y la de bagazo de caña de azúcar.

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Effect of chloride ion on the compressive mechanical properties of RC-65/35-BN steel fiber reinforced concrete

Cited by 2 publications

References 0 publications

Model for estimating the flexural performance of concrete reinforced with hooked end steel fibers using three‐point bending tests

Model for estimating the flexural performance of concrete reinforced with hooked end steel fibers using three‐point bending tests

Revisión sistemática de la literatura sobre mejoramiento de las propiedades mecánicas del concreto adicionando fibras artificiales y naturales

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