Study on the Variability of Materials Parameter in Wuhuang Highway Heavy-repairing Project

By observing at the field condition and achieving data in the lab,this paper mainly based on the design of the asphalt overlay's material compose of Wuhuang Highway Heavy repairing Project,and used the statistic theory to induce the distribution orderliness of those data achieved and analyzed the variability and the relativity of the parameter of the design of pavement materials.The author hoped that by controlling the variability and probability distribution of the material compose,we could improve the quality of the project,prolong the service life of the pavement and decrease the probability of the pavement's forepart damage.