Study on Road Performance of Graphene-modified Asphalt Mixture
In order to improve the pavement performance of asphalt mixture,the influence of graphene content on pavement performance of modified asphalt mixture was analyzed by preparing graphene-modified asphalt mixture,and the optimal graphene content was determined.With the increase of graphene content,the injection degree of composite modified asphalt decreases first and then increases,the softening point increases first and then decreases,and the ductility decreases continuously.The dynamic stability and maximum flexural strain of the composite modified asphalt mixture increase first and then stabilize.The ratio of freeze-thaw splitting strength increases first and then decreases.In sum-mary,the optimal graphene content is 0.2%.
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