Study on Mechanical Properties of Asphalt Mixture Modified by Waste Rubber Particles
In order to strengthen the construction of permanent pavement and improve the road perfor-mance of asphalt pavement in the area of changeable climate temperature.The modified asphalt mixture with 60 mesh waste rubber particles was studied.The effects of different rubber particle content(12%,14%,16%and 18%)on the basic properties of modified asphalt were determined.The mechanical proper-ties of asphalt mixture were determined by freeze-thaw splitting test and trabecular bending fatigue test.The results showed that with the increase of rubber particle content,the texture of modified asphalt became hard,the viscosity gradually increased,and the crosslinking effect gradually increased.When AC-16 grad-ing was adopted,the optimum oil stone ratio was 6.0%and the rubber particle content was 16%,the freeze-thaw splitting strength ratio and fatigue life of the mixture were the largest,and the mechanical properties were better.
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