Research On Colored Asphalt And Colored Asphalt Mixture Performance

The colored asphalt pavement can be in harmony with the surrounding environment,beautify the cities, slow drivers’ fatigue, promote traffic safety, reduce road noise, andmitigate "heat island", etc. Now people’s living standards continue to improve, andcontinuously enhance the aesthetic ideas of the environment, as well as the frequentoccurrence of traffic accidents, so the colored pavement should be widely used in urban roads.Firstly, the preparation of colored asphalt CCA was studied according to domestic andinternational experience, and the production process was put forward. The properties werestudied to find that approached or exceeded domestic and foreign products, especiallylow-temperature ductility and resistance to aging performance.The two special colored asphalts—CCSZ1and CCSZ2were also studied. The coloredasphalt CCSZ1was studied by cone penetration and shear strength, and the colored asphaltCCSZ2was studied by kinematic viscosity according to their viscosity, high hardness and lowtemperature characteristics, etc.Secondly, the pavement performances of colored asphalt CCA, CCSZ, KLMY and SBSmodified asphalt mixture were studied from high temperature stability, water stability and lowtemperature crack resistance based on the Marshall design method and unified the ratio. Theresults showed that the mixture performance of colored asphalt CCA was superior to KLMYasphalt; the colored asphalt CCSZ1and CCSZ2mixture had good high temperature stability,but the latter had good water stability and low temperature performance. the pavementperformance of colored asphalt CCSZ2was better by comprehensive comparison.Finally, a better construction process was designed according to the particularity ofconstruction process for the colored pavement; the engineering investment costs of coloredpavement were analyzed from the four aspects such as labor costs, material costs, machinerycosts and road user fees. The facts proved that the usage of colored asphalt mixture structureis feasible, and had a large social benefit.