In order to evaluate the contribution of natural bitumen to bitumen pavement the performances of modified bitumen and its mixture are tested in laboratory, and an experimental natural bitumen road is paved.

  • 为评价北美岩沥青的性能及其对沥青路面的改性效果,对改性沥青及沥青混合料进行了室内性能试验,并铺设了试验路。

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