Compressive and tensile stress–strain-strength behavior of asphalt concrete at different temperatures and strain rates

Zhang, Yingbo; Zhu, Yanan; Wang, Weibiao; Ning, Zhiyuan; Feng, Shaokong; Höeg, Kaare

doi:10.1016/j.conbuildmat.2021.125362

Cited by 50 publications

(4 citation statements)

References 10 publications

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“…So far, the research on the characteristics of asphalt concrete panels and core walls is more extensive [7][8][9]. Zhu et al [10] found that adjusting aggregate gradation, filler and asphalt content can effectively improve the overall performance of asphalt concrete; Guo Haipeng [11] found that WG-I warm mix agent can improve the performance of hydraulic asphalt concrete, and its effect is better; Ning et al [12,13] studied the dynamic compression of asphalt concrete at different temperatures and established a calculation model of related properties.…”

Section: Study On the Backgroundmentioning

confidence: 99%

“…In the formula: α and β are fitting parameters. By substituting Formula ( 7) into ( 6), we obtain: After fitting, it was found that the function relationship between a value and gradation index (r) was as follows: a = α + βr (7) In the formula: α and β are fitting parameters. By substituting Formula ( 7) into (6), we obtain:…”

Section: Slope Flow Value and Time Prediction Model Of Different Grad...mentioning

confidence: 99%

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Experimental Research on High-Temperature Stability of Asphalt Concrete Panels of Impermeable Layers

et al. 2023

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In order to study the slope stability of an impervious layer asphalt concrete panel, in this study, the maximum aggregate size used was 19 mm, and a slope flow value test was carried out after changing the gradation index, filler content and bitumen aggregate ratio. The test results showed that the relationship curve between the slope flow value and the test time was mainly divided into three stages for the slope flow value: an almost linear growth stage, a gradual stabilization stage, and a stable stage. The grading index, bitumen aggregate ratio and filler content had an effect on the slope flow value of asphalt concrete. The slope flow value decreased with the increase in the grading index. A reasonable increase in the grading index can increase the slope stability of the asphalt concrete panel. The slope flow value increased with the increase in the filler content and bitumen aggregate ratio. When the filler content exceeded 13%, the slope flow value significantly increased. At the same time, it was also verified that the asphalt concrete slope with the maximum aggregate size of 19 mm had good thermal stability. On this basis, a prediction model of asphalt concrete slope flow value and test time was established. The model considered the effect of different parameters of mix proportion on the slope flow value. The calculation results were in good agreement with the test results.

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Section: Study On the Backgroundmentioning

confidence: 99%

Section: Slope Flow Value and Time Prediction Model Of Different Grad...mentioning

confidence: 99%

Experimental Research on High-Temperature Stability of Asphalt Concrete Panels of Impermeable Layers

et al. 2023

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“…These cracks can culminate in brittle fracture, diminishing the service life and overall durability [ 14 ]. Additionally, as the height of the earth and rock dam increases, the peak tensile stresses and their area of influence also increase [ 15 ]. The stability and safety of earth and rock dams substantially diminish when functional damage occurs to a structure under the extreme external loading of hydraulic asphalt concrete [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Study on the Effect of Asphalt Static Conditions on the Tensile Properties of Acidic Aggregate Hydraulic Asphalt Concrete

Bao,

He,

Wang

et al. 2024

Materials

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Hydraulic asphalt concrete is known for its excellent seepage control performance and strong deformation resistance. This engineering material has widespread applications in the seepage control structures of hydraulic buildings. Recent projects have investigated the use of acidic aggregates to improve economic efficiency. However, they have also highlighted the weaker adhesion between acidic aggregates and asphalt, which necessitates stringent construction process control. This study investigates the impact of resting conditions on the tensile properties of acidic aggregate hydraulic asphalt concrete. The results of the tensile testing indicate that the storage time significantly affects the performance of asphalt concrete. The tensile strength of the specimens without anti-stripping agents decreased from 1.711 MPa to 0.914 MPa after resting periods of 0, 10, 20, and 30 days. The specimens treated with anti-stripping agents also showed a decrease in tensile strength over time, similar to the trend observed in the previous specimens. Digital specimen simulations indicated a decrease in cohesion between the asphalt and the aggregate from 5.375 MPa to 2.664 MPa after 30 days, representing a reduction of 50.44%. To counteract the effect of the storage time on the bonding between acidic aggregates and asphalt, this study recommends reducing the grading index and maximum size of aggregates, decreasing the coarse aggregate content, and selecting smooth aggregate shapes.

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“…Stefańczyk, and Mieczkowski, (2008), [4] addressed that the possibility to predict the variation of the stiffness modulus with the variation of testing temperatures of asphalt concrete is considered a critical issue for providing pavement structural layers with adequate durability. , [5] conducted a comprehensive series of testing on asphalt concrete mixtures in the temperature range -30 °C to +30 °C. It was observed that the time-temperature superposition is applicable for the strength and modulus values of asphalt concrete.…”

Section: Introductionmentioning

confidence: 99%

The Role of Dissipated Energy and Stiffness in Enhancing the Fatigue Life of Asphalt Concrete under Environmental Influence

Sarsam

2023

CEBEL

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Variation of environmental conditions exhibits various modes of failure of asphalt concrete pavement. Under cold environment, the flexible pavement experience cracking and disintegration, while under hot environment, the pavement practices rutting. Both environmental conditions can enhance the fatigue life of the flexible pavement. In the present work, the role of the change in the dissipated energy, and flexural stiffness of asphalt concrete on its fatigue life under environmental influence have been investigated. Asphalt concrete mixtures were prepared with its optimum asphalt binder requirements, and then compacted into a slab mold by laboratory roller to a target density. Beam specimens were obtained from the prepared slab samples and tested for fatigue life using three levels of constant strain of (750, 400, and 250) microstrain under dynamic flexural stresses. The specimens were tested at (5, 20, and 30) ℃ environment levels. It was noticed that specimens practicing cold environment exhibit shorter fatigue life as compared with those tested at hot environment. However, the flexural stiffness of the beam specimens decline as the testing temperature rises. Such behavior was further supported with the variation in the dissipated energy among testing environment. It was concluded that higher testing environment declines the flexural stiffness, increases the fatigue life, and changes the mode of failure of asphalt concrete from brittle to plastic mode.

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Compressive and tensile stress–strain-strength behavior of asphalt concrete at different temperatures and strain rates

Cited by 50 publications

References 10 publications

Experimental Research on High-Temperature Stability of Asphalt Concrete Panels of Impermeable Layers

Experimental Research on High-Temperature Stability of Asphalt Concrete Panels of Impermeable Layers

Study on the Effect of Asphalt Static Conditions on the Tensile Properties of Acidic Aggregate Hydraulic Asphalt Concrete

The Role of Dissipated Energy and Stiffness in Enhancing the Fatigue Life of Asphalt Concrete under Environmental Influence

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