The feasibility of DEM to analyze the temperature field of asphalt mixture

Microwave heating asphalt mixture is an auspicious method since it requires a minimum level of outside intervention. It has been a recent method with some certain advantages over conventional ones. To obtain the temperature field of microwave heating asphalt mixture utilizing an oblique horn antenna, the aperture field of the oblique horn antenna was deduced based on the Maxwell equations. The three-dimensional mathematical model of a microwave heating asphalt mixture was established by introducing a position relation of the horn caliber called an oblique horn antenna, and the calculation results were simplified and verified by experiments. The results showed that the calculated values of the mathematical model tally with the experimental outcomes. The model is found to be accurate and reliable.

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“…In this research, the discrete element method [ 20 ] was adopted. Asphalt is assumed to be heated as an isotropic material.…”

Section: The Mathematical Model Of the Temperature Field For The Micr...mentioning

confidence: 99%

Modeling the Temperature Field of the Microwave Heating Asphalt Mixture with the Utilization of a Mathematical Model

Zhang

Wang

Guo

2022

Applied Bionics and Biomechanics

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“…Li [32] performed computer-aided design of asphalt mixtures using discrete elements and obtained the relationship between asphalt dosage and volume parameters by simulating compaction. Huang [21,33] analyzed the thermal effect of asphalt mixture structural layer in laboratory and field through the discrete element thermal analysis model, and the results showed that the discrete element could effectively obtain the temperature field distribution inside the asphalt structural layer.…”

Section: Introductionmentioning

confidence: 99%

DEM-based stress transmission in asphalt mixture skeleton filling system

Xing

Liu²,

Sun³

et al. 2022

Construction and Building Materials

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“…Literature (Chen et al, 2017) uses the Green's function method, taking solar radiation, wind speed and temperature and other climate factors as input parameters to obtain an analytical solution for the temperature field in the multilayer pavement structure. Literature (Huang et al, 2016) uses the discrete element method to analyze the feasibility of the asphalt mixture temperature field. The test results show that the numerical simulation results are basically consistent with the experimental results.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence of Temperature Field on the Dynamic Modulus of Rubber Asphalt Pavement

Wang

Yan

et al. 2020

Front. Mater.

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In this paper, asphalt mixture performance test is used to study the dynamic modulus of different types of rubber asphalt mixtures in the laboratory, based on the viscoelastic theory, in order to determine the actual dynamic modulus of different structural layers under the action of temperature field in the asphalt pavement. Based on the timetemperature equivalence principle and Sigmund model, the dynamic modulus main curve is established, and establish the correlation equation between temperature and dynamic modulus. The actual dynamic modulus of asphalt concrete at each pavement layer is calculated by referring to the test data of pavement temperature field in Shijiazhuang and Tangshan, and compare and analyze the design value and actual value of dynamic modulus. The results show that the influence of external factors such as temperature and frequency on the dynamic modulus of asphalt mixture is far greater than that of internal factors such as cement and gradation type. Affected by the temperature field, the dynamic modulus of concrete at different structural levels is dynamically changing. Taking the dynamic modulus at 20°C and 10 Hz as the limiting index for design data selection is inconsistent with reality and needs to be improved. This study not only provides the basis for dynamic modulus selection in asphalt pavement design, but also has certain reference value for improving the life of asphalt pavement.

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The feasibility of DEM to analyze the temperature field of asphalt mixture

Cited by 31 publications

References 22 publications

Modeling the Temperature Field of the Microwave Heating Asphalt Mixture with the Utilization of a Mathematical Model

Modeling the Temperature Field of the Microwave Heating Asphalt Mixture with the Utilization of a Mathematical Model

DEM-based stress transmission in asphalt mixture skeleton filling system

Analysis of the Influence of Temperature Field on the Dynamic Modulus of Rubber Asphalt Pavement

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