采用废胎胶粉对沥青进行了改性，分析了在18％，20％和22％胶粉掺量下，40目，60目和80目胶粉对基质沥青的改性影响，并对橡胶沥青性能评价指标进行了探讨，同时采用SMA-13级配，对20％胶粉掺量下80目橡胶沥青混合料作了试验，测定了其路用性能，得出了一些有价值的结论。%The paper modifies the asphalt with the ground tire,analyzes the influences of 40 mesh,60 mesh and 80 mesh rubber powders on the modification of matrix asphalt with the mixtures of 18%,20% and 22% rubber powders,explores the rubber asphalt performance evaluation indexes,adopts SMA-13 grading to undertake the experiment on 80 mesh rubber asphalt mixers under the 20% rubber powder mixing volume, tests its road performance,so it achieves some valuable conclusion.
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