Fatigue strength of steel fibre reinforced concrete in flexure

Singh, S.P.; Kaushik, S. K.

doi:10.1016/s0958-9465(02)00102-6

Cited by 108 publications

(62 citation statements)

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“…Johnston and Zemp (1991), Huang and Zhao (1995), Jun and Stang (1998), Naaman and Hammoud (1998), Singh et al (2005) and Goel et al (2012). Table 18 shows the results taken from the references (Goel et al, 2012;Johnston and Zemp, 1991;Oh, 1991;Shi et al, 1993 (Goel et al, 2012;Singh and Kaushik, 2003). It is evidenced that the value of σ 6 found experimentally in this research is higher than the values reported by Singh and Kaushik (2003) and Goel et al (2012).…”

Section: Statistical Analysis Of the Resultsmentioning

confidence: 53%

“…Table 18 shows the results taken from the references (Goel et al, 2012;Johnston and Zemp, 1991;Oh, 1991;Shi et al, 1993 (Goel et al, 2012;Singh and Kaushik, 2003). It is evidenced that the value of σ 6 found experimentally in this research is higher than the values reported by Singh and Kaushik (2003) and Goel et al (2012). However the σ 6 /MR ratios are similar.…”

Section: Statistical Analysis Of the Resultsmentioning

confidence: 53%

“…For 1% steel fiber contents, Table 20 shows data taken from the references (Goel et al, 2012;Huang and Zhao, 1995;Johnston and Zemp, 1991;Jun and Stang, 1998;Singh and Kaushik, 2003;Singh et al, 2005), which show that the orders of magnitudes of the σ 6 /MR ratios are similar. …”

Section: Statistical Analysis Of the Resultsmentioning

confidence: 97%

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Estudio del comportamiento a la fatiga de una mezcla de concreto para pavimentos reforzada con fibras metálicas

Ruiz-Valencia

Rodriguez²,

León-Neira

2017

Rev. ing. constr.

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The behavior in flexural fatigue tests of concrete containing metal fibers has not been extensively studied. Therefore, this Keywords: Steel fiber reinforced concrete, fatigue tests, pavements ResumenEl comportamiento en ensayos de fatiga por flexión de concretos que contienen fibras metálicas no ha sido ampliamente estudiado. Por esta razón, se planteó este estudio para determinar el efecto de la incorporación de fibras metálicas en concretos para pavimentos en ensayos de fatiga por flexión. Se diseñó una mezcla de concreto con módulo de rotura de 4.1 MPa a 28 días, a la cual se le dosificaron fibras metálicas de 35 mm de largo y 0.5 mm de diámetro en tres proporciones: 20 kg/m 3 , 40 kg/m 3 y 80 kg/m 3 y se dejó una sin adición correspondiente a la mezcla de control. Los ensayos de fatiga se realizaron sobre 68 especímenes de 100 x 100 x 350 mm, a una frecuencia de 8 Hz, se aplicaron esfuerzos entre el 80% y 90% del módulo de rotura de cada mezcla. Con la distribución de probabilidad Weibull se calcularon las curvas de fatiga con diferentes probabilidades de falla. En los rangos de esfuerzos estudiados, la vida de fatiga no aumenta para contenido de fibras de 20 kg/m 3 y aumenta un 6% para 40 kg/m 3 (0.5%) y 25% para 80 kg/m 3 (1%) comparado con la mezcla control.Palabras clave: Concreto reforzado con fibras metálicas, ensayos de fatiga, pavimentos

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Section: Statistical Analysis Of the Resultsmentioning

confidence: 53%

Section: Statistical Analysis Of the Resultsmentioning

confidence: 53%

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Estudio del comportamiento a la fatiga de una mezcla de concreto para pavimentos reforzada con fibras metálicas

Ruiz-Valencia

Rodriguez²,

León-Neira

2017

Rev. ing. constr.

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“…The test revealed that the arrangements of web reinforcements had significant influence on the structural response of deep beams under fatigue loading [8]. Tests of fatigue behavior of steel fiber concrete were systematically conducted from cyclic axial compression and four-point bending [9]. The statistical distribution of equivalent fatigue-life of steel fiber reinforced concrete at a given stress level was studied, S approximately followed the two-parameter Weibull distribution [10].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Behavior of Steel Fiber Reinforced High-Strength Concrete under Different Stress Levels

Zhang

Gao

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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View the article online for updates and enhancements. Abstract. The investigation was conducted to study the fatigue behavior of steel fiber reinforced high-strength concrete (SFRHSC) beams. A series of 5 SFRHSC beams was conducted flexural fatigue tests at different stress level of 0.5, 0.55, 0.6, 0.7 and 0.8 respectively. Static test was conducted to determine the ultimate static capacity prior to fatigue tests. Fatigue modes and S-N curves were analyzed. Besides, two fatige life prediction model were analyzed and compared. It was found that stress level significantly influenced the fatigue life of SFRHSC beams and the fatigue behavior of SFRHSC beams was mainly determined by the tensile reinforcement. IntroductionIn practical engineering, a large number of structures such as bridge decks, offshore installations and airport runaways often bear cyclic loads. These loads such as wind loads, and wave loads could result in progressive and continuous micro cracks, which leads to the increased permanent strains and decreased stiffness of the structure. The fatigue failure will eventually occur by the damage. Therefore, considerable interest has been developed on the fatigue performance of the concrete structures. The mechanism of fatigue in concrete can be divided into three distinct stages. The first stage is termed as flaw initiation and involves flaws forming within weak regions of the concrete. The second stage is known as micro cracking and is featured by slow growth of flaws to a critical size. The third stage occurs when a continuous macro cracks form, eventually leading up to the final failure [1]. The first and third stage make up approximately 10% of the total curve separately, while the second stage accounts for the remaining 80% [2]. The addition of fiber reinforcing can increase the fatigue performance of the concrete under flexural fatigue loading and explained that the fibers would be able to bridge cracks and prolong fatigue life under tensile forces [3]. The effects of the fiber content, fiber aspect ratio and notchto-depth ratio on the concrete fracture and fatigue behaviour were studied, and the fatigue strengths of SFRC beams were calculated. According to the regression technique, some empirical formulas for predicting the fatigue strength of SFRC beams were also suggested [4]. 11 beams reinforced by a new kind of steel (20 MN Siv) under static loading and fatigue loading with constant amplitudes were tested and the calculation method of concrete strain on the edge of compressive zone and the tensile stress of longitudinal reinforcements was put forward [5]. Fatigue test of RC beams was conducted, and the conclusion was that the mode of failure was related with stress level. In low stress level, fatigue specimens broke in the mode of bending failure with the sign of brittle fracture of reinforcement, and in

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“…That is why direct tensile tests are necessary. A study on the fatigue strength of steel fibre reinforced concrete under flexural fatigue loading was conducted by Singh P S and Kaushik S K [3] . The fatigue behavior of concrete under uniaxial tension with constant and variable amplitude cyclic loading was investigated by Lv P Y [4] .…”

Section: Introductionmentioning

confidence: 99%

Residual tensile strength of plain concrete under tensile fatigue loading

Meng

Song

2007

J. Wuhan Univ. Technol.

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The functional relation between the residual tensile strength of plain concrete and number of cycles was determined. 99 tappered prism specimens of plain concrete were tested under uniaxial tensile fatigue loading. Based on the probability distribution of the residual tensile strength, the empirical expressions of the residual tensile strength corresponding to the number of cycles were obtained. The residual tensile strength attenuating curves can be used to predict the residual fatigue life of the specimen under variable-amplitude fatigue loading. There is a good correlation between residual tensile strength and residual secant elastic modulus. The relationship between the residual secant elastic modulus and number of cycles was also established.

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Fatigue strength of steel fibre reinforced concrete in flexure

Cited by 108 publications

References 1 publication

Estudio del comportamiento a la fatiga de una mezcla de concreto para pavimentos reforzada con fibras metálicas

Estudio del comportamiento a la fatiga de una mezcla de concreto para pavimentos reforzada con fibras metálicas

Fatigue Behavior of Steel Fiber Reinforced High-Strength Concrete under Different Stress Levels

Residual tensile strength of plain concrete under tensile fatigue loading

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