Prefabricated Flexible Conductive Composite Overlay for Active Deicing and Snow Melting

Abstract

This study aims to develop a new self-deicing technology that can clear ice/snow with high efficiency and achieve rapid assembly on site. A prefabricated flexible conductive composite overlay for active deicing and snow melting is put forward. The overlay consists of three layers, including (1) a functional layer where carbon-fiber heating wires (CFHWs) are distributed in a polyurethane rubber sheet, (2) gravel bonded to the upper surface of the functional layer by epoxy resin as a wear layer, and (3) aluminum foil film adhered to the lower surface of the functional layer by pressure-sensitive adhesive as a heat-insulating layer. Experiments were performed to test the mechanical properties (e.g., flexibility, durability, and skid resistance) and snow-melting performance. The results indicate its mechanical properties meet the road performance requirements. This overlay can be used as a temperature-adjusting overlay that can effectively overcome the influence of ice and snow on pavement structures and road safety. Meanwhile, its flexibility makes it easy to carry and make an assembled pavement that is friendly to both old and new pavements.