A Simulation Study of Temperature Field of Ceramic Asphalt Pavement

Ceramic asphalt concrete is produced by replacing fine aggregate of SMA-13 with different amount of ce-ramic powder.The percentages of replacement by volumes are 10%,20%,30%,40% or 50%.The thermophysical pa-rameters of ceramic asphalt concrete are studied.A model of pavement temperature field is developed based on the heat conduct theory to simulate the temperature variation during the operations and the heat loss during the constructions for the ceramic asphalt concrete with different amounts of ceramic replacement.A rutting model of pavement is also devel-oped in this study to simulate the permanent deformation under the coupling effects of temperatures and loadings.The re-sults show that the heat conductivity coefficient for the concrete with ceramic decreases.When the ceramic replacement reaches 50%,the highest temperature at 4 cm below the ceramic asphalt concrete surface during the operations decreases by 4.42 ℃;the effective compacting time increases 24 min during the constructions;and the permanent deformation is 1. 12 cm,which decreases by 56% comparing to SMA-13 asphalt concrete.