Concrete pavement with microwave heating enhancement functional layer for efficient de-icing: Design and case study

Zhao, Jinwei; Wang, Xuancang; Lei, Xiaoguang; Ren, Junru; Cao, Yangsen; Tian, Yanhua

doi:10.1016/j.coldregions.2023.103846

Cited by 10 publications

(5 citation statements)

References 31 publications

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“…The pink region in Figure 13 is the microwaves irradiated on the gaps of CFS. In this case, one unit of the CFS was considered as a rectangular waveguide, in which the waveguide wall was a carbon fiber bundle and the medium within the waveguide was CM [11]. According to electromagnetic field theory, only when the operating frequency is higher than the cutoff frequency can electromagnetic waves propagate in a waveguide.…”

Section: Interaction Between Microwaves and Cfsmentioning

confidence: 99%

“…In recent years, materials that strongly absorb microwaves have been added to or have replaced the materials in roads to enhance the ability to deice these roads with microwaves [1][2][3][4][5][6]. Among these materials, layered pavement combining microwaveabsorbent materials and structures has shown excellent deicing performance [7][8][9][10][11]. Therefore, combining microwave-induced deicing pavement with microwave-absorbing structures has broad application prospects.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Microwave Deicing Capacity of Cement Pavement with Carbon Fiber Screens

Li,

Zhao,

Jing

et al. 2024

Materials

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The combination of an absorbing structure and a road is a promising strategy for road deicing using microwaves. In this study, cement mortar (CM) specimens containing a carbon fiber screen (CFS) were prepared to concentrate electromagnetic losses on a road surface. The effect of the size and depth of the CFS on the surface heating efficiency of the microwave was studied and optimized, and a microwave deicing experiment was conducted. The results indicated that the destructive interference produced by the CFS led to the effective surface heating of the CM/CFS specimens. The optimal surface heating rate was 0.83 °C/s when the spacing, depth, and width of the CFS were 5.22, 13.31, and 2.80 mm, respectively. The deicing time was shortened by 21.68% from 83 to 65 s, and the heating rate increased by 17.14% from 0.70 to 0.82 °C/s for the specimen with CFS-1, which was 15 mm depth. Our results demonstrate that CM/CFS composite structures can be effectively applied to increase the capacity and accelerate the development of the microwave deicing of roads.

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Section: Interaction Between Microwaves and Cfsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced Microwave Deicing Capacity of Cement Pavement with Carbon Fiber Screens

Li,

Zhao,

Jing

et al. 2024

Materials

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“…The adhesion between asphalt mixtures and ice, as well as the impact of salts on the asphalt–ice interface under extreme environmental conditions, continues to be explored in depth [ 27 , 28 ]. Zhao [ 29 , 30 ] studied the impact of road surface characteristics on the adhesion between ice and concrete. Luo [ 31 ] focused on the adhesive strength relationships at the asphalt–aggregate interface, particularly the anisotropy of mineral surfaces in the aggregate.…”

Section: Introductionmentioning

confidence: 99%

A Molecular Dynamics Analysis of the Thickness and Adhesion Characteristics of the Quasi-Liquid Layer at the Asphalt–Ice Interface

Jiao,

Yao,

Qiu

et al. 2024

Materials

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The quasi-liquid layer (QLL), a microstructure located between ice and an adhering substrate, is critical in generating capillary pressure, which in turn influences ice adhesion behavior. This study employed molecular dynamics (MD) methods to obtain QLL thickness and utilized these measurements to estimate the adhesive strength between ice and asphalt. The research involved constructing an ice–QLL–asphalt MD model, encompassing four asphalt types and five temperature ranges from 250 K to 270 K. The QLL thickness was determined for various asphalts and temperatures using the tetrahedral order parameter gradient. Additionally, capillary pressure was calculated based on the QLL thickness and other geometric parameters obtained from the MD analysis. These findings were then compared with ice adhesion strength data acquired from pull-off tests. The results indicate that QLL thickness varies with different asphalt types and increases with temperature. At a constant temperature, the QLL thickness decreases in the order of the basal plane, primary prism plane, and secondary prism plane. Furthermore, the adhesion strength of the QLL diminishes as the temperature rises, attributed to the disruption of hydrogen bonds at lower temperatures. The greater the polarity of the asphalt’s interface molecules, the stronger the adhesion strength and binding free energy. The MD simulations of the asphalt–ice interface offer insights into the atomic-scale adhesive properties of this interface, contributing to the enhancement in QLL property prediction and calibration at larger scales.

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“…Microwave heating, as an environmentally friendly snow melting and de-icing technology, has been applied in snow melting and de-icing [7]. Moreover, microwave technology has the unique advantage of selectively heating the road surface by penetrating the ice layer [8], offering broad prospects for rapid ice and snow removal on roads.…”

Section: Introductionmentioning

confidence: 99%

Properties of Concrete Reinforced with a Basalt Fiber Microwave-Absorbing Shielding Layer

Jiang,

Song,

Wang

et al. 2023

Sustainability

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The purpose of this study was to propose a highly efficient, durable, and environmentally friendly method for the rapid removal of ice and snow. A microwave-absorbing functionality layer was placed between a conductive metal mesh and magnetite sand shielding layer, and ordinary cement concrete (OC). Microwave heating, mechanical strength determination, and indoor and outdoor de-icing tests were performed on the cement concrete specimens with the shielding layer. Basalt fibers were added to the absorbing functionality layer, and the formed specimens were tested for strength and durability. The microstructure was observed using SEM experiments. The results show that the temperature rise of microwave-absorbing cement concrete with a magnetite sand shielding layer (MCMS) and microwave-absorbing cement concrete with a conductive metal mesh shielding layer (MCMM) increased by approximately 17.2% and 27.1%, respectively, compared to that of microwave-absorbing concrete (MAC). After freeze–thaw cycles, the compressive strength and flexural strength of microwave-absorbing concrete with basalt fiber (MAB) increased by 4.35% and 7.90% compared to those of MAC, respectively. The compressive strength and flexural strength of microwave-absorbing concrete with a magnetite sand shielding layer and basalt fiber (MAMB) increased by 8.07% and 6.57%, respectively, compared to those of MCMS. Compared to specimens without basalt fiber, the wear rate per unit area of MAMB decreased by 8.8%, and the wear rate of MAB decreased by 9.4%. The water absorption rate of MAMB specimens decreased by 13.1% and 12.0% under the conditions of 20 and 40 microwave freeze–thaw cycles, respectively, compared to that of MCMS. The water absorption rate of MAB specimens decreased by 9.9% and 8.3% under the conditions of 20 and 40 microwave freeze–thaw cycles, respectively, compared to that of MAC. SEM analysis showed that the addition of basalt fibers improved the compactness and stability of the cement concrete structure as a whole. This study provides valuable references for the promotion and application of microwave de-icing technology.

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Concrete pavement with microwave heating enhancement functional layer for efficient de-icing: Design and case study

Cited by 10 publications

References 31 publications

Enhanced Microwave Deicing Capacity of Cement Pavement with Carbon Fiber Screens

Enhanced Microwave Deicing Capacity of Cement Pavement with Carbon Fiber Screens

A Molecular Dynamics Analysis of the Thickness and Adhesion Characteristics of the Quasi-Liquid Layer at the Asphalt–Ice Interface

Properties of Concrete Reinforced with a Basalt Fiber Microwave-Absorbing Shielding Layer

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