A comparative experimental investigation of concrete, reinforced-concrete and steel-fibre concrete pipes under three-edge-bearing test

Haktanır, Tefaruk; Ari, Kamuran; Altun, Fatih; Karahan, Okan

doi:10.1016/j.conbuildmat.2006.05.031

Cited by 74 publications

(35 citation statements)

References 4 publications

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“…Compared to the results of the study done by Haktanir (2007) on the performance of steelfiber reinforced concrete when used as a material in concrete cylindrical pipes, the results of the current study show a significant improvement in the ultimate load and a reduction in the width and length of the crack (Table 4). However, like steel fiber reinforced concrete, PET fiber reinforced concrete is also not subject to corrosion which will be a significant advantage for many of the applications in the field.…”

Section: Load Testcontrasting

confidence: 62%

“…Cylindrical concrete pipes which are often strengthened with steel reinforcements are used in many applications such as in underground pipe networks which carry waste water and storm water and the construction of deep wells, soakage pits and culverts in roads [3]. Manufacturing the cage required for the reinforced concrete pipes, using conventional reinforcement bars requires special bending, welding and placement procedures, which are very time consuming.…”

Section: Introductionmentioning

confidence: 99%

“…Manufacturing the cage required for the reinforced concrete pipes, using conventional reinforcement bars requires special bending, welding and placement procedures, which are very time consuming. Steel-fiber concrete pipes were found to be an economical alternative to classically-reinforced-concrete pipes as they help to overcome the difficulties encountered in using ordinary steel reinforcements in pipe systems [3]. For example, steel fibers of standard sizes can simply be added to the panmixer of any concrete mixer as an aggregate or mineral admixture.…”

Section: Introductionmentioning

confidence: 99%

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Use of Recycled Polyethylene Terephthalate (PET) Fibers in Concrete Cylindrical Pipes

Silva

Rathnayaka

2018

Engineer

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Abstract:Fabrication of the reinforcement cages of concrete pipes, using conventional reinforcement bars, require special bending, welding and placement procedures, which are quite timeconsuming. Use of fiber reinforced concrete produced with polyethylene terephthalate (PET) fiber in the manufacturing of concrete pipes would be a sustainable solution since PET fiber is an eco-friendly material. The objective of this study was to investigate the use of PET fibers as a replacement material in the steel reinforcement cages used in manufacturing reinforced concrete cylindrical pipes. It was observed that at a water-cement ratio of 0.3 the optimum compressive strength of 45.8 MPa could be achieved by including 2% of PET fiber in the concrete mixture. Three different types of specimens; plain concrete, reinforced concrete and PET fiber concrete were cast and subjected to the three-edge bearing test. PET fiber reinforced concrete provided the optimum strength required for producing concrete cylindrical pipes. The PET-fiber concrete cylindrical pipe is an economical and sustainable alternative to the classically-reinforced-concrete cylindrical pipe.

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Section: Load Testcontrasting

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Use of Recycled Polyethylene Terephthalate (PET) Fibers in Concrete Cylindrical Pipes

Silva

Rathnayaka

2018

Engineer

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“…Los tubos de hormigón armados con armadura tradicional (THA) y los tubos de hormigón con fibras de acero (THFA) son alternativas conocidas y empleadas para el transporte de agua, residuos industriales, saneamiento entre otros (1)(2)(3)(4). Para éstos, la adición de fibras conduce a ventajas tanto técnicas, mejorando las propiedades mecánicas del hormigón (5), como económicas (2).…”

Section: Introductionunclassified

“…Steel bar reinforced concrete pipes (SBRCP) and steel fibre reinforced concrete pipes (SFRCP) are well-known alternatives used for the conveyance of water, industrial wastes, sewerage among other applications (1)(2)(3)(4). The addition of fibres to these pipes leads to the improvement of mechanical properties of concrete (5), as well as to economic savings (2).…”

Section: Introductionmentioning

confidence: 99%

Experimentación y simulación numérica de tubos de hormigón con fibras

Fuente¹,

Figueiredo²,

Aguado³

et al. 2010

Mater. construcc.

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RESUMENEn este artículo se presentan los resultados principales de un estudio experimental y numérico del comportamiento de tubos hormigón reforzado con fibras de acero (THFA). Se fabricaron y ensayaron 18 tubos de 600 mm de diámetro con cuantías de 10, 20 y 40 kg/m 3 de fibras, concluyéndo-se varios aspectos tecnológicos relacionados con la fabricación y el ensayo así como del comportamiento resistente. Por otra parte, se ha desarrollado el modelo numérico MAP que permite la simulación del comportamiento resistente de THFA sometidos al ensayo de aplastamiento. Los resultados han sido satisfactorios para cualquier régimen de carga, permitiendo concluir que el modelo es una herramienta útil para el diseño óptimo de este tipo de tubos. Se concluye que el uso del modelo conduce a una reducción del coste del armado y da un impulso al uso de fibras como elemento de refuerzo en esta tipología estructural Palabras clave: tubos de hormigón, fibras de acero, ensayo de aplastamiento y fisuración. SUMMARYThe results concerning on an experimental and a numerical study related to SFRCP are presented. Eighteen pipes with an internal diameter of 600 mm and fibre dosages of 10, 20 and 40 kg/m 3 were manufactured and tested. Some technological aspects were concluded. Likewise, a numerical parameterized model was implemented. With this model, the simulation of the resistant behaviour of SFRCP can be performed. In this sense, the results experimentally obtained were contrasted with those suggested by means MAP reaching very satisfactory correlations. Taking it into account, it could be said that the numerical model is a useful tool for the optimal design of the SFRCP fibre dosages, avoiding the need of the systematic employment of the test as an indirect design method. Consequently, the use of this model would reduce the overall cost of the pipes and would give fibres a boost as a solution for this structural typology. Keywords INTRODUCCIÓNLos tubos de hormigón armados con armadura tradicional (THA) y los tubos de hormigón con fibras de acero (THFA) son alternativas conocidas y empleadas para el transporte de agua, residuos industriales, saneamiento entre otros (1-4). Para éstos, la adición de fibras conduce a ventajas tanto técnicas, mejorando las propiedades mecánicas del hormigón (5), como económicas (2). Si se emplean además barras de acero, éstas desempeñan la tarea resistente principal (6) mientras que las fibras activan un mecanismo de puente entre los labios de las fisuras que conduce a una reducción de su separación y de su apertura (7). Desde la vertiente económica, el ahorro de armadura tradicional se traduce en una disminución de las operaciones de montaje, mano de obra, maquinaria, así como de los riesgos asociados (2).El uso de fibras para el refuerzo de tubos de hormigón (TH) no es reciente, sino que su desarrollo se inició hace prácticamente dos décadas. No obstante, su introducción en el mercado está siendo progresiva a causa de factores como riesgo de cortes durante las tareas de manipulación, falta y/o desconoc...

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Nano silica grafted on modified polyacrylonitrile fiber improves the interfacial strength of fiber‐reinforced concrete

Wei,

Xu,

Wang

et al. 2024

J of Applied Polymer Sci

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Cement is known to be brittle and usually reinforced with fibers. However, there is a lack of effective chemical bonding between organic fibers and inorganic cement, resulting in a weaker interfacial bonding strength. In this paper, amino hyperbranched polymer (HBP) was used to modify the surface of polyacrylonitrile (PAN) fibers, and then silica nanoparticles (SiO2 NPs) were grafted on the surface of modified PAN fibers to realize the inorganic treatment of organic fibers. The modified PAN fibers applied to cement concrete can significantly enhance the interfacial strength between the fibers and cement. The morphology and chemical composition of the modified PAN fibers were characterized by scanning electron microscope, atomic force microscope, electron energy dispersive spectroscopy, and Fourier transform infrared spectroscopy, and the influence of grafting conditions on grafting effect was analyzed. The results show that SiO2 NPs were evenly distributed on the surface of PAN fiber. When SiO2 NPs concentration was 4%, grafting temperature was 50°C, and grafting time was 4 h, the grafting degree of SiO2 NPs grafted PAN fiber can reach to 1.4%. After coating with SiO2 NPs, the pullout bonding strength of the PAN fiber was increased from 5.5 to 6.5 cN.

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A comparative experimental investigation of concrete, reinforced-concrete and steel-fibre concrete pipes under three-edge-bearing test

Cited by 74 publications

References 4 publications

Use of Recycled Polyethylene Terephthalate (PET) Fibers in Concrete Cylindrical Pipes

Use of Recycled Polyethylene Terephthalate (PET) Fibers in Concrete Cylindrical Pipes

Experimentación y simulación numérica de tubos de hormigón con fibras

Nano silica grafted on modified polyacrylonitrile fiber improves the interfacial strength of fiber‐reinforced concrete

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