As asphalt is paved, aggregate can segregate, making weak spots in the pavement. Though hard to see, segregation can be detected by checking for differences in temperatures as the asphalt is laid.
Mounted on the paving machine, the new Pave-IR system uses infrared sensors to continuously monitor and record the location and temperature of asphalt as it is laid. Pave-IR helps contractors identify segregation as it happens, so they can correct it.