Effectiveness of Bio-Waste-Derived Carbon Doping on De-Icing Performance of an Electrically Resistant Concrete

Abstract

This paper proposes a modified carbon-based concrete filler composition, which can potentially be used as a self-de-icing pavement. Carbon fibers (CNFs), graphene-like porous carbon (GLC), and a CNF/GLC composite were developed to reinforce concrete with the aim to improve its electrical conductivity and mechanical properties. The effect of the CNF and GLC loadings on the electrical conductivity of the filled concrete was evaluated in a climatic chamber at temperatures simulating water-freezing conditions on a concrete road. The results show that even a negligible loading (0.2 wt.%) of concrete with CNF/GLC results in a dramatic decrease in its resistance when compared to the same loadings for CNF and GLC added separately. Depending on the number of fillers, the temperature of the modified concrete samples reached up to +19.8 °C at low voltage (10 V) at −10 °C, demonstrating the perspective of their heat output for anti-icing applications. Additionally, this study shows that adding 2.0 wt.% of the CNF/GLC composite to the concrete improves its compressive strength by 33.93% compared to the unmodified concrete.

Enhanced Microwave Deicing Capacity of Cement Pavement with Carbon Fiber Screens

“…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.…”

Water-Droplet Impact and Sliding Behaviors on Slippery Surfaces with Various Weber Numbers and Surface Inclinations

“…Notably, an LIS has potential applications in the field of anti-icing because the presence of lubricant can delay the freezing time of water droplets [7,8] and reduce the adhesion strength of ice [9][10][11][12]. Similar to other anti-/de-icing technologies including superhydrophobic [13][14][15] and self-de-icing pavements [16,17], anti-icing LISs have the potential to be used on outdoor equipment such as transmission lines, wind turbines, and aircraft [18][19][20][21]. It is a common phenomenon that the LIS is impacted by dews, rain, or other fluids.…”