| In recent years, As a kind of functional materials to deicing actively, the granulated crumb rubber asphalt mixture is widely researched. There were many successful examples showed the effective deicing in the domestic. At present, the main evaluation index on deicing effect is breakage. But the index is severely affected by the subjective factors, this will result in different test results in the same conditions.In order to get a more suitable index of deicing, This paper, based on the rubber particles could lead to mixture water stability decreased, make a correction for the determination of optimum asphalt content. Combining with the influence of different factors on deicing, this study adopts the deicing test at low temperature, then after the analysis of the data processing, It is concluded that the new evaluation indicators of deicing performance-Creep Compliance and Deformation Rate of Ice. Finally, it is verified that the composition design of granulated crumb rubber asphalt mixture by the deicing test. Specific research contents and results are as follows:(1)By adding Splitting test and Cantabro test, it gets the suitable optimum asphalt content of rubber particles in asphalt mixture.(2)The results of pavement performance testing meet the specification requirements. it shows that the modified method is feasible.(3)Creep Compliance and Deformation Rate of Ice have been put forward by laboratory deicing test. And it is concluded that the effective scope of deicing in granulated crumb rubber asphalt mixture.(4)Based on the result of deicing, it is concluded that the optimal type of grading combination. |
