A Study on Fatigue Behaviors of Concrete under Uniaxial Compression: Testing, Analysis, and Simulation

Fan, Ziyuan; Sun, Yongming

doi:10.1520/jte20190900

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…The specimens of the concrete grade C80 reveal a larger scatter with coefficient of variation (CoV) of 7.51%. This level of scatter is high and makes a reproducible investigation of the fatigue behavior nearly impossible [60][61][62][63][64]. Therefore, to reduce the scatter of the test results for the subsequently tested concrete grade C40, two changes of the test setup have been adapted.…”

Section: Monotonic Loading (Ls1)mentioning

confidence: 99%

Experimental and theoretical evidence for the load sequence effect in the compressive fatigue behavior of concrete

Baktheer

Chudoba

2021

Mater Struct

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A realistic prediction of the concrete fatigue life exposed to high-cycle loading scenarios with variable amplitudes is of utmost importance for a reliable and economically efficient design of civil engineering infrastructure for transport and energy supply. Current design codes estimate the fatigue life under variable amplitudes using the Palmgren–Miner rule, which assumes a linear scaling between lifetimes measured for uniform cyclic loading scenarios. Several experimental series conducted in the past, however, indicate that this assumption is not valid and that it may lead to unsafe design. In this paper, an experimental and theoretical investigations of the fatigue loading sequence effect in normal- and high-strength concrete behavior are presented, which confirm this observation. In particular, a test campaign with 135 cylinder specimens, including three concrete grades and six different loading scenarios has been conducted. Several response characteristics of the fatigue behavior including Wöhler curves, fatigue creep curves and evolving shapes of hysteretic loops have been evaluated. To substantiate the experimental results, a theoretical explanation of the observed sequence effect is formulated based on the assumption, that energy is dissipated uniformly within the volume of a test specimen during subcritical, compressive cyclic loading. Then, superposition of energy dissipation profiles along the lifetime measured for constant amplitudes becomes possible and a theoretical justification of the experimentally observed sequence effect can be provided. Moreover, a reverse sequence effect reported in the literature for bending fatigue of concrete can then be explained by an unevenly distributed energy dissipation over a cracked specimen. Supported by the theoretical consideration, the processed experimental data is used to validate existing fatigue life assessment rules by testing their ability to reflect the load sequence effect.

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Section: Monotonic Loading (Ls1)mentioning

confidence: 99%

Experimental and theoretical evidence for the load sequence effect in the compressive fatigue behavior of concrete

Baktheer

Chudoba

2021

Mater Struct

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“…In order to compare RAC with natural aggregate concrete of similar compressive strength, a Weibull distribution analysis was performed on the uniaxial compression fatigue life test data of two groups of natural aggregate concrete (NAC-1 and NAC-2) in references [ 36 , 37 , 38 ] with cubic compressive strengths of 54.2 MPa and 46.8 MPa, respectively. According to these analyses, the S-N-p equations of NAC-1 and NAC-2 were obtained using the same process as stated above.…”

Section: Results and Analysismentioning

confidence: 99%

Analysis of Compressive Fatigue Failure of Recycled Aggregate Concrete

et al. 2021

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Using recycled aggregate in concrete is effective in recycling construction and demolition waste. It is of critical significance to understand the fatigue properties of recycled aggregate concrete (RAC) to implement it safely in structures subjected to repeated or fatigue load. In this study, a series of fatigue tests was performed to investigate the compressive fatigue behavior of RAC. The performance of interfacial transition zones (ITZs) was analyzed by nanoindentation. Moreover, the influence of ITZs on the fatigue life of RAC was discussed. The results showed that the fatigue life of RAC obeyed the Weibull distribution, and the S-N-p equation could be obtained based on the fitting of Weibull parameters. In the high cycle fatigue zone (N≥104), the fatigue life of RAC was lower than that of natural aggregate concrete (NAC) under the same stress level. The fatigue deformation of RAC presented a three-stage deformation regularity, and the maximum deformation at the point of fatigue failure closely matched the monotonic stress-strain envelope. The multiple ITZs matched the weak areas of RAC, and the negative effect of ITZs on the fatigue life of RAC in the high cycle fatigue zone was found to be greater than that of NAC.

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Analysis of the Fatigue Mechanism of Cement-Stabilized Macadam Mesoscopic Intrinsic Contact Based on the Damage Accumulation–Energy Dissipation Method

Luo

Yan

et al. 2023

Iran J Sci Technol Trans Civ Eng

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A Study on Fatigue Behaviors of Concrete under Uniaxial Compression: Testing, Analysis, and Simulation

Cited by 4 publications

References 29 publications

Experimental and theoretical evidence for the load sequence effect in the compressive fatigue behavior of concrete

Experimental and theoretical evidence for the load sequence effect in the compressive fatigue behavior of concrete

Analysis of Compressive Fatigue Failure of Recycled Aggregate Concrete

Analysis of the Fatigue Mechanism of Cement-Stabilized Macadam Mesoscopic Intrinsic Contact Based on the Damage Accumulation–Energy Dissipation Method

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