초록 ▼

To remove ice and snow from pavement (1) having a carbonaceous top surface (4), a 915 M-Hz micro-wave generator with wave guide (8) is passed over the ice (13) followed closely by a scraper (10). Concrete pavements (1) are first coated with a reflective (2), heat-insulating (3) and carbonaceous (4)

To remove ice and snow from pavement (1) having a carbonaceous top surface (4), a 915 M-Hz micro-wave generator with wave guide (8) is passed over the ice (13) followed closely by a scraper (10). Concrete pavements (1) are first coated with a reflective (2), heat-insulating (3) and carbonaceous (4) top coat or other carbonaceous coating while asphalt pavements need not be so coated. The micro-waves at this frequency pass through the ice (13), the carbonaceous top surface (4) absorbs the micro-waves and becomes heated thereby, the interface (12) between the ice (13), so freed, is scraped off without damaging the pavement (1).

대표청구항 ▼

CM,1. The method for removing ice from a pre-prepared pavement having an ice cover thereon, comprising the steps of: (a) preparing the pavement by application to said pavement of a thin multi-layer top coat wear-resistant material comprising a microwave absorptive carbonaceous material layer and an

CM,1. The method for removing ice from a pre-prepared pavement having an ice cover thereon, comprising the steps of: (a) preparing the pavement by application to said pavement of a thin multi-layer top coat wear-resistant material comprising a microwave absorptive carbonaceous material layer and an aluminum containing underlayer material; (b) passing a microwave generator and a cooperating waveguide over said pre-prepared pavement having ice cover thereon, said generator generating microwaves at a frequency permitting the microwaves to pass through said ice cover and to be absorbed by said microwave absorptive material at the interface between said thin multi-layer top coat wear-resistant material and said ice and said waveguide passing with sufficient speed to cause said interface to be heated without substantially warming the underlying pavement to thereby cause said ice to be rapidly released from said thin multi-layer top coat wear resistant material at said interface only; and, (c) scraping said ice from said thin multi-layer top coat wear-resistant material prior to said ice refreezing to said thin multi-layer top coat wear-resistant material.