What is the urban heat island effect and how does concrete fit in?
A. Scientists observed that urban areas with more buildings and paving and less vegetation are typically warmer than surrounding rural areas. This is partially attributed to the dark surfaces of roofing and paving used to create our built environment. Temperature increases have been measured as high as 8 degrees Fahrenheit. This additional heat causes air conditioning systems to work harder and consume more energy, as much as 18 percent. The additional heat also enhances the conditions for the creation of smog. Concretes natural light color can reduce urban heat islands. Light-colored concrete reflects more solar energy than dark-colored materials whether on parking lots, driveways, or sidewalksthereby reducing the high temperatures.
