Investigation of the Microwave Absorption of Asphalt Mixtures Containing Magnetite Powder

Guan, Bowen; Liu, Jianan; Zhao, Henan; Wu, Jiayu; Liu, Jingyi; Fa, Yang

doi:10.3390/coatings9120813

Cited by 32 publications

(8 citation statements)

References 27 publications

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“…As can be seen from Figure 11 , the surface temperature of the asphalt mixture mixed with CFe is significantly higher than that of the control group, and the temperature increases with the replacement rate of CFe. This heating efficiency is similar to the results obtained by Guan et al [ 38 ], who added magnetite powder as a microwave-absorbing material to asphalt concrete and found that the microwave heating rate of the asphalt mixture with magnetite powder was significantly higher than that of traditional asphalt mixture.…”

Section: Resultssupporting

confidence: 90%

“…Ding et al [ 12 ] found that a 1% mass ratio of Al 3 O 4 and Fe 3 O 4 mixed 1:1 at 2.45 GHz had a better deicing efficiency. Guan et al [ 38 ] studied the microwave heating performance of adding magnetite powder to an asphalt mixture and found that increasing the dosage of magnetite powder increased the heating rate and the low-temperature performance. The recommended dosage of magnetite powder was 60%.…”

Section: Introductionmentioning

confidence: 99%

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A Study on the Heating and Deicing Performance of Microwave-Absorbing Asphalt Mixtures

et al. 2023

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Road icing in winter brings challenges to traffic safety, and microwave heating and deicing technology is an effective method with the advantages of high efficiency and environmental protection. Magnetite has been widely used as a microwave-absorbing material in pavement. In this paper, magnetite powder formed by crushing natural magnetite and high-purity Fe3O4 powder after purification were mixed to replace mineral powder, and the magnetite aggregate was used to replace the limestone aggregate with the same particle size to enhance the asphalt mixtures’ microwave absorption capacity. The effect of microwave heating time and microwave power on the heating of the asphalt mixtures was studied, and the heating performance of different thicknesses of the asphalt mixtures under microwave radiation was evaluated. The heating performance of the mixtures under different initial temperatures and ice layer thicknesses was also assessed. The results showed that the addition of the magnetite powder–Fe3O4 powder and the magnetite aggregate significantly enhanced the heating performance of the asphalt mixtures by microwave heating. The replacement of the magnetite powder–Fe3O4 powder, the microwave heating time, and the microwave power had positive effects on the heating efficiency of the asphalt mixtures. Moreover, the thinner asphalt mixtures had a better heating performance. The heating and deicing performance of the mixtures decreased with a decline in initial temperature. As the ice thickness increased, the deicing time of the specimen surface to reach 0 °C also increased.

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Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

A Study on the Heating and Deicing Performance of Microwave-Absorbing Asphalt Mixtures

et al. 2023

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“…This suggests that the addition of CGP contributes to the improvement of the microwave heating ability. This may be because the compounds composed of Si and Fe, Al and other related metals have good electromagnetic properties [44,45]. And the comprehensive content of silicon oxide, iron oxide and alumina in CGP is significantly higher than that in CMP (Table 5), which helps to enhance the absorption capacity of microwaves [35,36].…”

Section: Microwave Heating Ability Of Asphalt Mixes With Different Fi...mentioning

confidence: 99%

“…Some studies have shown that Si is an electric loss microwave absorbing material [32], and ferrite can absorb microwaves by means of both dielectric loss and magnetic loss, mainly through magnetic loss [33]. The compounds composed of Si and related metals such as Fe and Al have good electromagnetic properties and can absorb microwaves [44,45]. Compared with CMP, CGP may have better microwave absorption efficiency.…”

Section: Chemical Composition Of Fillersmentioning

confidence: 99%

Microwave Heating Healing of Asphalt Mixture with Coal Gangue Powder and Basalt Aggregate

Zhang,

Gao,

et al. 2023

Sustainability

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Microwave heating is an effective method to achieve autonomic crack healing in asphalt mixtures, and the use of microwave-absorbing materials can largely improve this healing efficiency. As a solid waste, coal gangue contains metal oxides, which shows the possibility of microwave heating. In order to further promote the application of coal gangue in the microwave healing of asphalt mixtures, this study looks into the synergistic effect of basalt and coal gangue powder (CGP) on the microwave heating self-healing of an asphalt mixture. The mechanical performance, water stability, low-temperature crack resistance and microwave healing efficiency of the asphalt mixture were investigated using the immersion Marshall test, standard Marshall test, Cantabro test and semi-circular bending (SCB), and healing tests, respectively. The results indicated that the addition of CGP in asphalt mixture can improve the microwave heating speed, which also showed a significant advantage in water stability and fracture energy recovery. The research results will further promote the utilization rate of coal gangue.

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“…Aminul Haque, M. et al demonstrated that the addition of three different fibrous materials can effectively improve the bending properties and compressive strength of the phosphate cement composites [14][15][16]. Several studies have shown that the road performance of asphalt mixture can be enhanced by the addition of fibers [17][18][19][20]. However, different types of fibers have different performance improvements on asphalt mixtures.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Performance of Basalt Fiber Reinforced Asphalt Mixture

et al. 2020

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This study is focused on the effect of basalt fiber on the road performance of the asphalt mixture. The road performance of asphalt mixture with different dosages of basalt fiber was comprehensively evaluated using Marshall Stability test, the wheel tracking test, the three-point bending beam test and the freezing-thaw splitting test. The road performance of lignin fiber reinforced asphalt mixture and polyester fiber reinforced asphalt mixture also were tested to compare with the road performance of basalt fiber reinforced asphalt mixture. The results showed that basalt fiber can enhance mechanical properties, the low-and high-temperature performance and water sensitivity of the asphalt mixture significantly. Considering the road performance and economic benefits, the appropriate dosage of basalt fiber is about 0.3%. Marshall Stability (MS), dynamic stability (DS), the maximum bending strain and the tensile strength ratio (TSR) of asphalt mixture with 0.3% basalt fiber were increased by 19.6%, 25.5%, 22.2% and 6.0%, respectively. Basalt fiber has certain advantages in improving the low-temperature performance of asphalt mixture by comparison with lignin fiber and polyester fiber.

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Investigation of the Microwave Absorption of Asphalt Mixtures Containing Magnetite Powder

Cited by 32 publications

References 27 publications

A Study on the Heating and Deicing Performance of Microwave-Absorbing Asphalt Mixtures

A Study on the Heating and Deicing Performance of Microwave-Absorbing Asphalt Mixtures

Microwave Heating Healing of Asphalt Mixture with Coal Gangue Powder and Basalt Aggregate

Investigation of the Performance of Basalt Fiber Reinforced Asphalt Mixture

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