The Urban Heat Island Effect and Impact of Asphalt Rubber Friction Course Overlays on Portland Cement Concrete Pavements in the Phoenix Area

摘要

Larger volume of paving and building materials gives urban areas a much higher thermal storage capacity than natural surfaces. Satellite thermal imagery of the Phoenix region showed that paved surfaces, including parking lots, local roads, and highways play a significant role in regards to the Urban Heat Island (UHI). In the past few years, the Arizona Department of Transportation's (ADOT) "Quiet Pavements" program have been highly successful with the traveling pubic in addressing roadway noise; the urban freeway in the Phoenix metropolitan has been resurfaced with an Asphalt Rubber Friction Course (ARFC) layer to reduce the noise impact to the surrounding neighborhoods by as much as 4 to 6 decibels.