Study on Asphalt Pavement Temperature Field Distribution Pattern

Thermal environmental conditions,to which asphalt pavements are continuously exposed,determine the complicated distribution pattern of pavement temperature field.The influence mechanism of environmental conditions on temperature field in asphalt pavement and the distribution pattern of pavement temperature field are analyzed.It is suggested that air temper-a-ture and solar radiation are principal factors affecting the pavement temperature,which are characteristics of hysteresis and accumulation.Through regression analysis between the measured pavement temperature data and meteorological data in several regions,a model to predict pavement temperature field is developed.The main inputs of the prediction model are air tempera-ture,solar radiation intensity and depth.