Abstract
In the paper, the method of deicing and melting snow by the carbon fiber heating wire (CFHW) embedded in the airport asphalt pavement is proposed to improve the security of airport operation. The field experiment of deicing and melting snow on the airport asphalt pavement is conducted. Deicing and melting snow, asphalt pavement temperature, ice-free area ratio, and snow-free area ratio are analyzed. Electrical power with 350 W/m2 is input to the airport asphalt pavement for deicing and melting snow by the CFHW. In the experiment, 3 mm ice can be melted, and the average infrared ray temperature (IRT) of the airport asphalt pavement surface can achieve an increment of 13.0°C in 2.5 hours when the air temperature is from −7.5°C to −2.2°C. Snow with 3.2 mm precipitation can be melted in 2 hours when the air temperature is from −4.8°C to −3.5°C, and the asphalt pavement temperature can achieve an increment of 5.9°C at the depth of 0.5 cm. The results show that the method of deicing and melting snow on the airport asphalt pavement by the CFHW is practicable in the cold zone.
Highlights
Ice and snow on the airport asphalt pavement affect aircraft takeoff, landing, and taxiing in winter because ice and snow increase the braking distance of the aircraft.e conventional methods of removing ice and snow by using airport pavement deicing fluid and deicing equipment induce flight delay and need a lot of manpower, deicing fluid, and machinery
In frozen and snowy weather, the results of laboratory and field experiments verified the validity of the electrothermal method of deicing and melting snow on the pavement and bridge deck under an appropriate input power. e authors studied the effects of heat flux, wire spacing, wind speed on the concrete pavement temperature, and deicing on the cement concrete pavement by the carbon fiber heating wire (CFHW) [1, 17, 18]
According to frozen and snowy weather in Beijing, the electrical power with 350 W/m2 is input to the airport asphalt pavement for deicing and melting snow in these experiments. e results of the fullscale field experiment show that it is effective for deicing and melting snow on the airport asphalt pavement by the CFHW
Summary
Ice and snow on the airport asphalt pavement affect aircraft takeoff, landing, and taxiing in winter because ice and snow increase the braking distance of the aircraft.e conventional methods of removing ice and snow by using airport pavement deicing fluid and deicing equipment induce flight delay and need a lot of manpower, deicing fluid, and machinery. It is necessary to conduct timely and high-efficient removal of ice and snow to avoid the adverse effect of deicing fluid and machinery on the airport asphalt pavement [1]. Some methods of deicing and melting snow on the pavement have been researched, such as asphalt mixture containing the snow-melting agent [5], hydraulic heating system [6,7,8,9,10], electrically conductive concrete [11,12,13], carbon fiber grille [14], and CFHW [15,16,17,18,19]. Zhao et al studied deicing on the bridge deck and concrete pavement by the CFHW [15, 16]. In frozen and snowy weather, the results of laboratory and field experiments verified the validity of the electrothermal method of deicing and melting snow on the pavement and bridge deck under an appropriate input power. e authors studied the effects of heat flux, wire spacing, wind speed on the concrete pavement temperature, and deicing on the cement concrete pavement by the CFHW [1, 17, 18]
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