The Influence of Carbon Fiber Heating Wire Spacing on Concrete Pavement Temperature

Lai, Yong; Liu, Yan; Ma, Daoxun; Su, Xin

doi:10.2991/ame-16.2016.132

Cited by 2 publications

(3 citation statements)

References 6 publications

(7 reference statements)

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“…To overcome these drawbacks, deicing technologies using heating wires and electrically conductive concrete offering excellent deicing performance are being researched. Chang et al [14] attached carbon nanofibers to the bottom of a concrete sample and the surface temperature rose to 5 • C at an ambient temperature of −12 • C. Suh et al [15] installed underground heating mesh at 5 and 10 cm from the surface of a concrete sample, and the surface temperature reached 0-8 • C at an ambient temperature of −18 to −2 • C. Zhao et al [16] and Wu et al [17] installed carbon fiber heating wires at a spacing of 10 cm in a concrete sample and reported that the surface temperature increased to 6-8 • C. Lai et al [18] installed carbon fibers spaced at 10 and 15 cm in a concrete sample and the surface temperature exceeded 0 • C at an ambient temperature of −5 • C. Thus, previous works on deicing technologies using heating wires show excellent deicing effects, but they are also associated with problems such as re-pavement when used on existing roads.…”

Section: Of 24mentioning

confidence: 99%

Deicing Concrete Pavements and Roads with Carbon Nanotubes (CNTs) as Heating Elements

2020

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Existing deicing technologies involving chloride and heating wires have limitations such as reduced durability of roads and surrounding structures, and high labor requirements and maintenance costs. Hence, in this study, we performed indoor experiments, numerical analyses, and field tests to examine the efficiency of deicing using carbon nanotubes (CNTs) to overcome these limitations. For indoor experiments, a CNT was inserted into the center of a concrete sample and then heated to 60 °C while maintaining the ambient and internal temperatures of the sample at −10 °C using a refrigeration chamber. Numerical analysis considering thermal conductivity was performed based on the indoor experimental results. Using the calculation results, field tests were conducted, and the thermal conduction performance of the heating element was examined. Results showed that the surface temperature between the heating elements exceeded 0 °C. Moreover, we found that the effective heating distance of the heating elements should be 20–30 cm for effective thermal overlap through the indoor experiments. Additionally, the numerical analysis results indicated that the effective heating distance increased to 100 cm when the heating element temperature and experiment time were increased. Field test results showed that 62 cm-deep snow melted between the heating elements (100 cm), thus, verifying the possibility of deicing.

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Section: Of 24mentioning

confidence: 99%

Deicing Concrete Pavements and Roads with Carbon Nanotubes (CNTs) as Heating Elements

2020

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“…Some scholars study how to improve the performance of bitumen and asphalt mixture to avoid negative effect [2][3][4]. At the same time, 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]. e recent research of deicing and melting snow on the pavement mainly focuses on the CFHW [1].…”

Section: Introductionmentioning

confidence: 99%

“…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]. e authors also studied the snow-melting effect, temperature, and energy distribution along the depth of the airport cement concrete pavement [19].…”

Section: Introductionmentioning

confidence: 99%

Research of Deicing and Melting Snow on Airport Asphalt Pavement by Carbon Fiber Heating Wire

Su¹,

Lai²,

Yan³

et al. 2020

Advances in Materials Science and Engineering

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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.

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The Influence of Carbon Fiber Heating Wire Spacing on Concrete Pavement Temperature

Cited by 2 publications

References 6 publications

Deicing Concrete Pavements and Roads with Carbon Nanotubes (CNTs) as Heating Elements

Deicing Concrete Pavements and Roads with Carbon Nanotubes (CNTs) as Heating Elements

Research of Deicing and Melting Snow on Airport Asphalt Pavement by Carbon Fiber Heating Wire

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