High-Efficiency Heating Characteristics of Ferrite-Filled Asphalt-Based Composites under Microwave Irradiation

Zhao, Hongduo; Zhong, Sheng; Zhu, Xingyi; Chen, Huaqing

doi:10.1061/(asce)mt.1943-5533.0001845

Cited by 37 publications

(12 citation statements)

References 21 publications

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“…Therefore, efforts were put into improving the microwave absorbing efficiency of asphalt mixture by adding microwave absorbers or using magnetite-bearing aggregates, such as taconite aggregate mineral and steel slag. Other attempts to improve microwave-absorbing capability included the addition of graphite, carbonyl iron powders (CIPs), carbon nanotubes, steel wool, and ferrite particles [10,13,17,18]. The magnetism of asphalt mixture introduced by ferrite additives is responsible for the magnetic loss during microwave heating.…”

Section: Introductionmentioning

confidence: 99%

Laboratory and Numerical Investigation of Microwave Heating Properties of Asphalt Mixture

Wang

Zhang

et al. 2019

Materials

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Microwave heating is an encouraging heating technology for the maintenance, recycling, and deicing of asphalt pavement. To investigate the microwave heating properties of asphalt mixture, laboratory tests and numerical simulations were done and compared. Two types of Stone Mastic Asphalt (SMA) mixture samples (with basalt aggregates and steel slag aggregates) were heated using a microwave oven for different times. Numerical simulation models of microwave heating of asphalt mixture were developed with finite element software COMSOL Multiphysics. The main thermal and electromagnetic properties of asphalt mixture, served as the model input parameters, were measured through a series of laboratory tests. Both laboratory-measured and numerical simulated surface temperatures were recorded and analyzed. Results show that the replacement of basalt aggregates with steel slag aggregates can significantly increase the microwave heating efficiency of asphalt mixture. Numerical simulation results have a good correlation with laboratory test results. It is feasible to use the developed model coupling electromagnetic waves with heat transfer to simulate the microwave heating process of asphalt mixture.

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Section: Introductionmentioning

confidence: 99%

Laboratory and Numerical Investigation of Microwave Heating Properties of Asphalt Mixture

Wang

Zhang

et al. 2019

Materials

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“…Additionally, the amount of electricity used by microwave devices is much less than that required to produce a similar effect by electromagnetic induction, so microwave heating is more effective than induction heating in healing cracks in asphalt roads. The research in this field has determined that the penetration depth of microwaves can exceed 100 mm, which is useful for healing microcracks in the middle or bottom asphalt layers [ 80 ]. In order to evaluate the self-healing efficiency of asphalt mixtures exposed to microwave heating, the recovery rate of the stiffness modulus and the fatigue life extension ratio can be employed as healing indexes, and the influence of different factors, such as heating temperature, healing time, or damage level, has been investigated [ 81 , 82 ].…”

Section: Resultsmentioning

confidence: 99%

Self-Healing Asphalt: A Systematic Bibliometric Analysis for Identification of Hot Research Topics during the 2003–2018 Period

Abejón

2021

Materials

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The use of self-healing asphalt is a good option to extend the lifetime of roads and to improve the sustainability of pavement management systems. A bibliometric analysis based on the Scopus database was carried out to review the global research related to self-healing asphalt from 2003 to 2018 and to identify relevant quantitative characteristics from the research in this period. The results from this analysis revealed that the number of accumulated publications followed an exponential growth, which confirmed the relevance that this research topic has gained during the last years. The study revealed that China was the most productive country, followed by the Netherlands, where the most prolific institution is located: Delft University of Technology. Some important research features of the two main approaches most frequently used to develop asphalt mixtures with enhanced self-healing abilities (external heating and encapsulated rejuvenating agents) are compiled in this work.

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“…In the heating process, a transformer is used initially to boost the voltage, which allows the power supply to drive the magnetron to work. Then, a high‐frequency microwave field is generated [12]. Microwave transmits through the rectangular metal waveguide, and is radiated into the asphalt pavement by the radiation cavity.…”

Section: Heat Transfer Simulationmentioning

confidence: 99%

Heat transfer analysis of microwave hot recycling for asphalt pavement

Sun

Sheng

2019

J. eng.

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High-Efficiency Heating Characteristics of Ferrite-Filled Asphalt-Based Composites under Microwave Irradiation

Cited by 37 publications

References 21 publications

Laboratory and Numerical Investigation of Microwave Heating Properties of Asphalt Mixture

Laboratory and Numerical Investigation of Microwave Heating Properties of Asphalt Mixture

Self-Healing Asphalt: A Systematic Bibliometric Analysis for Identification of Hot Research Topics during the 2003–2018 Period

Heat transfer analysis of microwave hot recycling for asphalt pavement

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