Abstract:In order to analyze the influence of binder and pigment on the road performance of colored asphalt mixture, four kinds of colored binders C B-A, CB-B, cb-c and cb-d were prepared based on the raw materials of four components (base oil, resin, decolorizer and modifier) and inorganic pigments with different colors (red, yellow, green and blue). The concept of material powder ratio was proposed and four kinds of colored asphalt mixture were designed Material cam-a, cam-b, cam-c, cam-d. Through rutting test, bending creep test, immersion Marshall test and freeze-thaw splitting test, the high temperature stability, low temperature crack resistance and water stability of four kinds of colored asphalt mixtures were evaluated. The test results show that the performance indexes of colored asphalt mixture under four colors meet the technical requirements. The addition of pigment can improve the high-temperature performance and water stability of the colored asphalt mixture, but not the low-temperature performance. The road performance of the colored asphalt mixture can be improved by improving the softening point, ductility, viscosity and other indicators of the binder, reasonably selecting the series of pigment and its particle size.