Flexure fatigue strength and failure probability of self compacting concrete made with RCA and blended cements

Saini, Babanpreet Singh; Singh, S.P.

doi:10.1016/j.istruc.2022.09.031

Cited by 7 publications

(1 citation statement)

References 56 publications

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“…In Section 3.1.3, three specimens tested at S max of 0.65 did not fail after 1 million cycles and were termed run-outs. Four outliers in Tables 5 and 6 of the fatigue life data were identified by employing Chauvenet's criterion [27]. These data points were excluded from further examination.…”

Section: Probabilistic Distribution Of Fatigue Lifementioning

confidence: 99%

Tensile Fatigue Properties of Ordinary Plain Concrete and Reinforced Concrete under Flexural Loading

Chen,

Sun,

Zhang

et al. 2023

Materials

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Many bridge structural components are subjected to repetitive vehicle load and temperature gradient action. The resulting cyclic tensile stresses within the structures could cause premature fatigue failure of concrete, dramatically impairing structural components’ durability and sustainability. Although substantial knowledge of fatigue properties on low-strength pavement concrete and high-strength structural concrete has been obtained, research on the most widely used normal-grade ordinary concrete in bridge engineering is still ongoing. Therefore, a four-point bending fatigue test of 97 C50 concrete specimens under a constant amplitude sinusoidal wave was conducted in the laboratory, the flexural fatigue behavior of plain and reinforced concrete specimens was studied, and the cyclic deformation evolution of concrete under fatigue loading was obtained. The empirical fatigue S-N equations of concrete with a failure probability p of 0.1~0.5 were derived through statistical analysis of the test results. The fatigue life of the tested specimens exhibited a two-parameter Weibull distribution. In addition to the maximum stress level Smax, the stress ratio R is also a key factor affecting the flexural fatigue life of concrete N. The semi-logarithmic and logarithmic equations were almost identical at the tested stress levels, the latter predicting longer fatigue life for Smax < 0.70. The restraining effect from steel reinforcement slightly lengthened the concrete’s fatigue cracking initiation life. The insight into concrete flexural fatigue properties from this study not only contributes to a better understanding of structural concrete, but also provides a basis for the practical evaluation of concrete or composite bridge decks.

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Section: Probabilistic Distribution Of Fatigue Lifementioning

confidence: 99%

Tensile Fatigue Properties of Ordinary Plain Concrete and Reinforced Concrete under Flexural Loading

Chen,

Sun,

Zhang

et al. 2023

Materials

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Effect of high‐range water reducer and W/C ratio on the fresh and mechanical properties of fiber‐reinforced natural zeolite SCC

K. Pour,

Shirkhani,

Noroozinejad Farsangi

2024

Structural Concrete

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The present study aims to investigate how the use of high‐range water reducer (HRWR) and variations in water/cement (W/C) ratio affect the properties of self‐consolidating concrete (SCC) while taking into account different proportions of polypropylene fibers (PF) and natural zeolite (NZ). A total of 28 samples were cast and analyzed. PF fractions ranging from 0% to 1.5% by weight were added, along with a substitution of 10% NZ for cement (50 kg/m3). Four W/C ratios (0.30, 0.35, 0.40, and 0.45) were tested, in addition to seven HRWR contents ranging from 5 to 6.5 kg/m3. Various tests were conducted to assess slump, T500, V‐funnel, L‐box, modulus of elasticity, and compressive, tensile, and flexural strengths. Novel models were developed to predict the properties of hardened concrete based on W/C, HRWR, PF, and NZ content. Findings indicated that optimal performance of PF‐reinforced SCC with NZ was achieved when up to 0.75% PF was combined with an HRWR content equivalent to 1.25% of the cement fraction and NZ ratio. Furthermore, the proposed models offer accurate predictions of both fresh and hardened‐state properties of PF‐reinforced SCC with NZ based on W/C and HRWR ratios.

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Flexural fatigue performance of recycled sand concrete for high-speed railway track bed

Li,

Shi,

Dong

et al. 2024

Construction and Building Materials

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Flexure fatigue strength and failure probability of self compacting concrete made with RCA and blended cements

Cited by 7 publications

References 56 publications

Tensile Fatigue Properties of Ordinary Plain Concrete and Reinforced Concrete under Flexural Loading

Tensile Fatigue Properties of Ordinary Plain Concrete and Reinforced Concrete under Flexural Loading

Effect of high‐range water reducer and W/C ratio on the fresh and mechanical properties of fiber‐reinforced natural zeolite SCC

Flexural fatigue performance of recycled sand concrete for high-speed railway track bed

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