Investigation of the Antifreezing, Skid Resistance, and Waterproof Performances of an Acrylic and Polytetrafluoroethylene Coating for Asphalt Pavement

Freezing on asphalt roads affects driving safety. Spraying salt on roadways pollutes the environment. Mechanical deicing requires significant human and financial resources. This paper proposes a new approach to realize autonomous anti-icing of asphalt pavement, an acrylic/polytetrafluoroethylene coating (APC). The contact angle of a water droplet on the APC surface is 155.392°. Moreover, the freezing time of water droplets on the APC-coated asphalt mixture is 1.5 times longer than that of the uncoated asphalt mixture. Moreover, the skid resistance test results show that APC can increase the road friction coefficient, which is 1.2 times that of ordinary pavement. The water permeability test results confirm that APC can prevent water from penetrating into the road surface. In summary, APC improves the anti-icing performance of asphalt pavements and exhibits excellent anti-slip and waterproof properties.