关键词: 碳纤维发热线, 自发热, 机场道面, 温升规律, 融雪化冰

Abstract: Aiming at self-heating airfield concrete pavement with continuous carbon fiber heating wire, three cement concrete pavement slabs were made, which respectively inbuilt 6K,12K and 24K carbon fiber heating wire, and the temperature-rising law of plates were studied through field experiments in different natural environment and input power. The results indicate that the more closer the heating wire, the faster the temperature could rise and the higher temperature could reach. Temperature of different points on the same plane of each concrete slab surface was less than 3℃ when spacing was 10cm, and the temperature uniformity was good. The results of temperatre-rising were mainly determined by the input power.The temperature of slab surface could rise to 0℃ after 3.5 hours with the -10℃ natural temperature and 382W/m² input power. The natural environment has significant effects on the temperature-rising of slab surface. The variation tendency of temperature on slab surface was always in correspondence with the environmental temperature. The temperature on the slab surface would reduce by more than 20% when the environment temperature reduced 3℃. The thermal dissipation of concrete slab changed slowly, and the surplus thermal energy could be used for melting snow and ice.

Key words: carbon fiber heating wire, self-heating, airfield pavement, law of temperature-rising, snow and ice melting