Study on Durability Evaluation Method of Modified Asphalt Based on Cohesion Energy
In this paper,six kinds of SBS modified asphalt from different sources were compared by different durability evaluation methods.Through comparative analysis of the changes of major technical indexes such as needle penetration and viscosity before and after short-term or long-term aging of SBS modified asphalt,it was found that the change law of cohesion energy and cohesion energy ratio,the new index for durability eval-uation based on energy,were in line with the general law of aging of modified asphalt,and its effectiveness were preliminatively confirmed,which opened up a new technical path for optimization of asphalt durability e-valuation methods.
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