I don't care where you live, asphalt pavement is hot during the summer. In Phoenix, where I live, the asphalt gets so hot it would burn the devil's feet. Coming off a year where we set a record for 100+ degree days (144) in a year, anything that could drop the summer highs a bit would be an amazing innovation. Pavement can retain heat overnight which makes low summer temperatures in the 90's a fairly common reality. When this happens, it doesn't take much time or daylight to reach extreme temperatures.
Researchers at Arizona State University (ASU) have been looking at various pavement innovations, including, ones that reduce the surface temperature like a "cool pavement." They have recently started testing with the City of Phoenix Street Transportation Department to determine if the pavement treatment cools things off. Several sections in different parts of Phoenix and in different conditions have gotten a "cool pavement" treatment. The ASU and City of Phoenix team will collect and analyze temperature and roadway wear characteristics over time to determine the viability and functionality of "cool pavement."
The pavement treatment used in Phoenix is a light colored product that can reduce surface temperatures from over 150 to less than 130 degrees. The same property that reflects the sun to keep the pavement cool can increase the air temperature above the pavement and can create some pretty intense glare.
Pending verification testing, it is believed that "cool pavement" could reduce overall temperatures.
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