Snow and ice melting properties of self-healing asphalt mixtures with induction heating and microwave heating

Sun, Yihan; Wu, Shaopeng; Liu, Quantao; Jian-fu, HU; Yuan, Yuan; Ye, Qunshan

doi:10.1016/j.applthermaleng.2017.10.050

Cited by 96 publications

(29 citation statements)

References 22 publications

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“…Most of this energy is transmitted or reflected in the asphalt mixture, and only a small portion of the energy is absorbed in the asphalt mixture [11]. Because of this, microwave deicing technology faces the problem of excessive energy consumption, which limits the promotion and application of this technology [12][13][14]. In order to improve the microwave-absorbing ability of asphalt mixtures and reduce the energy consumption of microwave deicing, various kinds of microwave absorbers are used in asphalt mixture.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Microwave Absorption of Asphalt Mixtures Containing Magnetite Powder

et al. 2019

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This article is intended to investigate the microwave heating performance of asphalt mixtures containing magnetite powders (MPAM). For this purpose, the surface temperatures of asphalt mixtures containing different dosages of magnetite powders were measured during microwave heating. The low-temperature bending test and water sensitivity test were also conducted to evaluate the performance of MPAM. Heating rate and reflection loss of different thicknesses of MPAM were determined using a microwave heating test and arch reflectivity test, respectively. The results showed that because its main components are triiron tetroxide and iron oxide, which have excellent microwave-absorbing properties, magnetite powders can be used as microwave absorbers to improve the ability of microwave absorption and increase the heating rate of asphalt mixtures. The heating rate of the asphalt mixtures increased with the increase of the amount of magnetite powder. The addition of magnetite powder improved the low-temperature properties of the asphalt mixture, but it reduced the water stability of the asphalt mixture. Considering that the microwave-absorbing asphalt mixture used for melting snow and ice should have good water stability, the recommended dosage of magnetite powders was 60%. The microwave-absorbing properties of MPAM were related to its thickness in the pavement structure and frequency of microwaves. In order to greatly enhance the absorbing efficiency, future work should be focused on matching thickness and matching frequency.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Microwave Absorption of Asphalt Mixtures Containing Magnetite Powder

et al. 2019

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“…One of the most promising technologies is the microwave heating. Microwave radiation has found different applications in pavement engineering, such as recycling of asphalt pavement [7] and deicing application [8] [9], although most of the researchers used microwave heating to promote self-healing process [10] [1]. When asphalt mixture is exposed to microwave radiation, heat is generated through conversion of the energy of the electromagnetic field [15].…”

Section: Introductionmentioning

confidence: 99%

Optimizing Asphalt Mixtures to Be Heated by Microwave

Gallego

Picado

Crucho

2019

Proceedings 17th International Conference on Microwave and High Frequency Heating

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Over the last ten years the concept of self healing in asphalt mixtures for roads pavements has been reaching great importance due to the fact that this capability allows a material to recuperate original properties after failure. This new generation of asphalt paving materials would allow road agencies to save no renewable resources as aggregates and bitumen, making the road investments more efficient. By the moment, there are two mechanisms to promote self healing in asphalt pavement: the incorporation in the asphalt mixtures of capsules containing a rejuvenating agent, or the heating of the pavement, especially the surface layer, to melt the asphalt binder, that gets liquid and refills the cracks in the material, recuperating a part of its initial structural parameters. Probably the most promising method for the in situ heating of the pavements is the radiation by microwaves. Unfortunately, asphalt mixture components (aggregates and binder) are low sensitive to microwave energy. This is why it may be advantageous to incorporate in the mixture additives to improve the sensibility to the radiation with microwaves. In this investigation two additives were studied: graphene and EAF slag coming from the steel industry. These additives were incorporated at several contents and the efficiency of the heating process was evaluated by the ratio kwh/kg/ºC in order to optimize the content of the additive in the asphalt mixture. Additionally, an evaluation of the electrical conductivity of the asphalt mixture at different contents of additives was carried out to study the possible relation between the conductivity of the mixture and its sensibility to microwave radiation. As a result of the investigation, it seems that microwave radiation can be a real option to promote in situ self healing of asphalt pavements. References J. Gallego, M.A. del Val, V. Contreras, A. Páez. Use of additives to improve the capacity of bituminous mixtures to be heated by means of microwaves, Materiales de Construcción. Vol. 67, Issue 325, January–March 2017, e110. http://dx.doi.org/10.3989/mc.2017.00416 …

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“…As can be seen from Table 6, when the input power is 80 W/m 2 , 160 W/m 2 and 320 W/m 2 , the corresponding temperature rise rates are 5.6 • C/h, 8.4 • C/h and 12.4 • C/h, respectively. Compared with other active deicing methods [10,37,38], the input power is lower and the temperature rises faster. It shows that the conductive EPDM rubber composite material can more effectively realize road deicing and snow removal.…”

Section: Joule Heating Performance Of Conductive Epdm Rubber Compositmentioning

confidence: 98%

Durability and Electrical Conductivity of Carbon Fiber Cloth/Ethylene Propylene Diene Monomer Rubber Composite for Active Deicing and Snow Melting

et al. 2019

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To reduce the impact of road ice and snow disaster, it is necessary to adopt low energy consumption and efficient active deicing and snow melting methods. In this article, three functional components are combined into a conductive ethylene propylene diene monomer (EPDM) rubber composite material with good interface bonding. Among them, the mechanical and electrical properties of the composite material are enhanced by using carbon fiber cloth as a heating layer. EPDM rubber plays a mainly protective role. Further, aluminum silicate fiber cloth is used as a thermal insulation layer. The mechanical properties of EPDM rubber composites reinforced by carbon fiber cloth and the thermal behaviors of the composite material in high and low temperature environments were studied. The heat generation and heat transfer effect of the composite were analyzed by electrothermal tests. The results show that the conductive EPDM rubber composite material has good temperature durability, outstanding mechanical stability, and excellent heat production capacity. The feasibility of the material for road active deicing and snow melting is verified. It is a kind of electric heating deicing material with broad application prospects.

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Snow and ice melting properties of self-healing asphalt mixtures with induction heating and microwave heating

Cited by 96 publications

References 22 publications

Investigation of the Microwave Absorption of Asphalt Mixtures Containing Magnetite Powder

Investigation of the Microwave Absorption of Asphalt Mixtures Containing Magnetite Powder

Optimizing Asphalt Mixtures to Be Heated by Microwave

Durability and Electrical Conductivity of Carbon Fiber Cloth/Ethylene Propylene Diene Monomer Rubber Composite for Active Deicing and Snow Melting

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